- 23 Feb, 2023 9 commits
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Peter Zijlstra authored
With overlapping alternative validation fixed, objtool promptly complains: vmlinux.o: warning: objtool: __switch_to_asm+0x2c: stack layout conflict in alternatives: .altinstr_replacement+0x47 .rela.altinstructions: 000000000000009c 0000000200000002 R_X86_64_PC32 0000000000000000 .text + 16dc 00000000000000a0 0000000600000002 R_X86_64_PC32 0000000000000000 .altinstr_replacement + 3a 00000000000000a8 0000000200000002 R_X86_64_PC32 0000000000000000 .text + 16dc 00000000000000ac 0000000600000002 R_X86_64_PC32 0000000000000000 .altinstr_replacement + 66 .text: 00000000000016b0 <__switch_to_asm>: 16b0: f3 0f 1e fa endbr64 16b4: 55 push %rbp 16b5: 53 push %rbx 16b6: 41 54 push %r12 16b8: 41 55 push %r13 16ba: 41 56 push %r14 16bc: 41 57 push %r15 16be: 48 89 a7 18 0b 00 00 mov %rsp,0xb18(%rdi) 16c5: 48 8b a6 18 0b 00 00 mov 0xb18(%rsi),%rsp 16cc: 48 8b 9e 28 05 00 00 mov 0x528(%rsi),%rbx 16d3: 65 48 89 1c 25 00 00 00 00 mov %rbx,%gs:0x0 16d8: R_X86_64_32S fixed_percpu_data+0x28 16dc: eb 2a jmp 1708 <__switch_to_asm+0x58> 16de: 90 nop 16df: 90 nop 16e0: 90 nop 16e1: 90 nop 16e2: 90 nop 16e3: 90 nop 16e4: 90 nop 16e5: 90 nop 16e6: 90 nop 16e7: 90 nop 16e8: 90 nop 16e9: 90 nop 16ea: 90 nop 16eb: 90 nop 16ec: 90 nop 16ed: 90 nop 16ee: 90 nop 16ef: 90 nop 16f0: 90 nop 16f1: 90 nop 16f2: 90 nop 16f3: 90 nop 16f4: 90 nop 16f5: 90 nop 16f6: 90 nop 16f7: 90 nop 16f8: 90 nop 16f9: 90 nop 16fa: 90 nop 16fb: 90 nop 16fc: 90 nop 16fd: 90 nop 16fe: 90 nop 16ff: 90 nop 1700: 90 nop 1701: 90 nop 1702: 90 nop 1703: 90 nop 1704: 90 nop 1705: 90 nop 1706: 90 nop 1707: 90 nop 1708: 41 5f pop %r15 170a: 41 5e pop %r14 170c: 41 5d pop %r13 170e: 41 5c pop %r12 1710: 5b pop %rbx 1711: 5d pop %rbp 1712: e9 00 00 00 00 jmp 1717 <__switch_to_asm+0x67> 1713: R_X86_64_PLT32 __switch_to-0x4 .altinstr_replacement: 3a: 49 c7 c4 10 00 00 00 mov $0x10,%r12 41: e8 01 00 00 00 call 47 <.altinstr_replacement+0x47> 46: cc int3 47: e8 01 00 00 00 call 4d <.altinstr_replacement+0x4d> 4c: cc int3 4d: 48 83 c4 10 add $0x10,%rsp 51: 49 ff cc dec %r12 54: 75 eb jne 41 <.altinstr_replacement+0x41> 56: 0f ae e8 lfence 59: 65 48 c7 04 25 00 00 00 00 ff ff ff ff movq $0xffffffffffffffff,%gs:0x0 5e: R_X86_64_32S pcpu_hot+0x10 66: e8 01 00 00 00 call 6c <.altinstr_replacement+0x6c> 6b: cc int3 6c: 48 83 c4 08 add $0x8,%rsp 70: 0f ae e8 lfence As can be seen from the two alternatives, when overlaid, the NOP after the shorter (starting at 66) coinsides with the call at 47, leading to conflicting CFI state for that instruction. By offsetting the shorter alternative by 2 bytes, this alignment is undone. Signed-off-by:Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Acked-by:
Josh Poimboeuf <jpoimboe@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> # build only Tested-by: Thomas Weißschuh <linux@weissschuh.net> # compile and run Link: https://lore.kernel.org/r/20230208172245.783099843@infradead.org
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Peter Zijlstra authored
Things like ALTERNATIVE_{2,3}() generate multiple alternatives on the same place, objtool would override the first orig_alt_group with the second (or third), failing to check the CFI among all the different variants. Signed-off-by: -
Peter Zijlstra authored
The instruction call_dest and jump_table members can never be used at the same time, their usage depends on type. struct instruction { struct list_head list; /* 0 16 */ struct hlist_node hash; /* 16 16 */ struct list_head call_node; /* 32 16 */ struct section * sec; /* 48 8 */ long unsigned int offset; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ long unsigned int immediate; /* 64 8 */ unsigned int len; /* 72 4 */ u8 type; /* 76 1 */ /* Bitfield combined with previous fields */ u16 dead_end:1; /* 76: 8 2 */ u16 ignore:1; /* 76: 9 2 */ u16 ignore_alts:1; /* 76:10 2 */ u16 hint:1; /* 76:11 2 */ u16 save:1; /* 76:12 2 */ u16 restore:1; /* 76:13 2 */ u16 retpoline_safe:1; /* 76:14 2 */ u16 noendbr:1; /* 76:15 2 */ u16 entry:1; /* 78: 0 2 */ u16 visited:4; /* 78: 1 2 */ u16 no_reloc:1; /* 78: 5 2 */ /* XXX 2 bits hole, try to pack */ /* Bitfield combined with next fields */ s8 instr; /* 79 1 */ struct alt_group * alt_group; /* 80 8 */ - struct symbol * call_dest; /* 88 8 */ - struct instruction * jump_dest; /* 96 8 */ - struct instruction * first_jump_src; /* 104 8 */ - struct reloc * jump_table; /* 112 8 */ - struct alternative * alts; /* 120 8 */ + struct instruction * jump_dest; /* 88 8 */ + struct instruction * first_jump_src; /* 96 8 */ + union { + struct symbol * _call_dest; /* 104 8 */ + struct reloc * _jump_table; /* 104 8 */ + }; /* 104 8 */ + struct alternative * alts; /* 112 8 */ + struct symbol * sym; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ - struct symbol * sym; /* 128 8 */ - struct stack_op * stack_ops; /* 136 8 */ - struct cfi_state * cfi; /* 144 8 */ + struct stack_op * stack_ops; /* 128 8 */ + struct cfi_state * cfi; /* 136 8 */ - /* size: 152, cachelines: 3, members: 29 */ - /* sum members: 150 */ + /* size: 144, cachelines: 3, members: 28 */ + /* sum members: 142 */ /* sum bitfield members: 14 bits, bit holes: 1, sum bit holes: 2 bits */ - /* last cacheline: 24 bytes */ + /* last cacheline: 16 bytes */ }; pre: 5:39.35 real, 215.58 user, 123.69 sys, 23448736 mem post: 5:38.18 real, 213.25 user, 124.90 sys, 23449040 mem Signed-off-by: -
Peter Zijlstra authored
Instead of caching the reloc for each instruction, only keep a negative cache of not having a reloc (by far the most common case). struct instruction { struct list_head list; /* 0 16 */ struct hlist_node hash; /* 16 16 */ struct list_head call_node; /* 32 16 */ struct section * sec; /* 48 8 */ long unsigned int offset; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ long unsigned int immediate; /* 64 8 */ unsigned int len; /* 72 4 */ u8 type; /* 76 1 */ /* Bitfield combined with previous fields */ u16 dead_end:1; /* 76: 8 2 */ u16 ignore:1; /* 76: 9 2 */ u16 ignore_alts:1; /* 76:10 2 */ u16 hint:1; /* 76:11 2 */ u16 save:1; /* 76:12 2 */ u16 restore:1; /* 76:13 2 */ u16 retpoline_safe:1; /* 76:14 2 */ u16 noendbr:1; /* 76:15 2 */ u16 entry:1; /* 78: 0 2 */ u16 visited:4; /* 78: 1 2 */ + u16 no_reloc:1; /* 78: 5 2 */ - /* XXX 3 bits hole, try to pack */ + /* XXX 2 bits hole, try to pack */ /* Bitfield combined with next fields */ s8 instr; /* 79 1 */ struct alt_group * alt_group; /* 80 8 */ struct symbol * call_dest; /* 88 8 */ struct instruction * jump_dest; /* 96 8 */ struct instruction * first_jump_src; /* 104 8 */ struct reloc * jump_table; /* 112 8 */ - struct reloc * reloc; /* 120 8 */ + struct alternative * alts; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ - struct alternative * alts; /* 128 8 */ - struct symbol * sym; /* 136 8 */ - struct stack_op * stack_ops; /* 144 8 */ - struct cfi_state * cfi; /* 152 8 */ + struct symbol * sym; /* 128 8 */ + struct stack_op * stack_ops; /* 136 8 */ + struct cfi_state * cfi; /* 144 8 */ - /* size: 160, cachelines: 3, members: 29 */ - /* sum members: 158 */ - /* sum bitfield members: 13 bits, bit holes: 1, sum bit holes: 3 bits */ - /* last cacheline: 32 bytes */ + /* size: 152, cachelines: 3, members: 29 */ + /* sum members: 150 */ + /* sum bitfield members: 14 bits, bit holes: 1, sum bit holes: 2 bits */ + /* last cacheline: 24 bytes */ }; pre: 5:48.89 real, 220.96 user, 127.55 sys, 24834672 mem post: 5:39.35 real, 215.58 user, 123.69 sys, 23448736 mem Signed-off-by: -
Peter Zijlstra authored
Since we don't have that many types in enum insn_type, force it into a u8 and re-arrange member to get rid of the holes, saves another 8 bytes. struct instruction { struct list_head list; /* 0 16 */ struct hlist_node hash; /* 16 16 */ struct list_head call_node; /* 32 16 */ struct section * sec; /* 48 8 */ long unsigned int offset; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ - unsigned int len; /* 64 4 */ - enum insn_type type; /* 68 4 */ - long unsigned int immediate; /* 72 8 */ - u16 dead_end:1; /* 80: 0 2 */ - u16 ignore:1; /* 80: 1 2 */ - u16 ignore_alts:1; /* 80: 2 2 */ - u16 hint:1; /* 80: 3 2 */ - u16 save:1; /* 80: 4 2 */ - u16 restore:1; /* 80: 5 2 */ - u16 retpoline_safe:1; /* 80: 6 2 */ - u16 noendbr:1; /* 80: 7 2 */ - u16 entry:1; /* 80: 8 2 */ + long unsigned int immediate; /* 64 8 */ + unsigned int len; /* 72 4 */ + u8 type; /* 76 1 */ - /* XXX 7 bits hole, try to pack */ + /* Bitfield combined with previous fields */ - s8 instr; /* 82 1 */ - u8 visited; /* 83 1 */ + u16 dead_end:1; /* 76: 8 2 */ + u16 ignore:1; /* 76: 9 2 */ + u16 ignore_alts:1; /* 76:10 2 */ + u16 hint:1; /* 76:11 2 */ + u16 save:1; /* 76:12 2 */ + u16 restore:1; /* 76:13 2 */ + u16 retpoline_safe:1; /* 76:14 2 */ + u16 noendbr:1; /* 76:15 2 */ + u16 entry:1; /* 78: 0 2 */ + u16 visited:4; /* 78: 1 2 */ - /* XXX 4 bytes hole, try to pack */ + /* XXX 3 bits hole, try to pack */ + /* Bitfield combined with next fields */ - struct alt_group * alt_group; /* 88 8 */ - struct symbol * call_dest; /* 96 8 */ - struct instruction * jump_dest; /* 104 8 */ - struct instruction * first_jump_src; /* 112 8 */ - struct reloc * jump_table; /* 120 8 */ + s8 instr; /* 79 1 */ + struct alt_group * alt_group; /* 80 8 */ + struct symbol * call_dest; /* 88 8 */ + struct instruction * jump_dest; /* 96 8 */ + struct instruction * first_jump_src; /* 104 8 */ + struct reloc * jump_table; /* 112 8 */ + struct reloc * reloc; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ - struct reloc * reloc; /* 128 8 */ - struct alternative * alts; /* 136 8 */ - struct symbol * sym; /* 144 8 */ - struct stack_op * stack_ops; /* 152 8 */ - struct cfi_state * cfi; /* 160 8 */ + struct alternative * alts; /* 128 8 */ + struct symbol * sym; /* 136 8 */ + struct stack_op * stack_ops; /* 144 8 */ + struct cfi_state * cfi; /* 152 8 */ - /* size: 168, cachelines: 3, members: 29 */ - /* sum members: 162, holes: 1, sum holes: 4 */ - /* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */ - /* last cacheline: 40 bytes */ + /* size: 160, cachelines: 3, members: 29 */ + /* sum members: 158 */ + /* sum bitfield members: 13 bits, bit holes: 1, sum bit holes: 3 bits */ + /* last cacheline: 32 bytes */ }; pre: 5:48.86 real, 220.30 user, 128.34 sys, 24834672 mem post: 5:48.89 real, 220.96 user, 127.55 sys, 24834672 mem Signed-off-by: -
Peter Zijlstra authored
struct instruction { struct list_head list; /* 0 16 */ struct hlist_node hash; /* 16 16 */ struct list_head call_node; /* 32 16 */ struct section * sec; /* 48 8 */ long unsigned int offset; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ unsigned int len; /* 64 4 */ enum insn_type type; /* 68 4 */ long unsigned int immediate; /* 72 8 */ u16 dead_end:1; /* 80: 0 2 */ u16 ignore:1; /* 80: 1 2 */ u16 ignore_alts:1; /* 80: 2 2 */ u16 hint:1; /* 80: 3 2 */ u16 save:1; /* 80: 4 2 */ u16 restore:1; /* 80: 5 2 */ u16 retpoline_safe:1; /* 80: 6 2 */ u16 noendbr:1; /* 80: 7 2 */ u16 entry:1; /* 80: 8 2 */ /* XXX 7 bits hole, try to pack */ s8 instr; /* 82 1 */ u8 visited; /* 83 1 */ /* XXX 4 bytes hole, try to pack */ struct alt_group * alt_group; /* 88 8 */ struct symbol * call_dest; /* 96 8 */ struct instruction * jump_dest; /* 104 8 */ struct instruction * first_jump_src; /* 112 8 */ struct reloc * jump_table; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ struct reloc * reloc; /* 128 8 */ - struct list_head alts; /* 136 16 */ - struct symbol * sym; /* 152 8 */ - struct stack_op * stack_ops; /* 160 8 */ - struct cfi_state * cfi; /* 168 8 */ + struct alternative * alts; /* 136 8 */ + struct symbol * sym; /* 144 8 */ + struct stack_op * stack_ops; /* 152 8 */ + struct cfi_state * cfi; /* 160 8 */ - /* size: 176, cachelines: 3, members: 29 */ - /* sum members: 170, holes: 1, sum holes: 4 */ + /* size: 168, cachelines: 3, members: 29 */ + /* sum members: 162, holes: 1, sum holes: 4 */ /* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */ - /* last cacheline: 48 bytes */ + /* last cacheline: 40 bytes */ }; pre: 5:58.50 real, 229.64 user, 128.65 sys, 26221520 mem post: 5:48.86 real, 220.30 user, 128.34 sys, 24834672 mem Signed-off-by: -
Peter Zijlstra authored
struct instruction { struct list_head list; /* 0 16 */ struct hlist_node hash; /* 16 16 */ struct list_head call_node; /* 32 16 */ struct section * sec; /* 48 8 */ long unsigned int offset; /* 56 8 */ /* --- cacheline 1 boundary (64 bytes) --- */ unsigned int len; /* 64 4 */ enum insn_type type; /* 68 4 */ long unsigned int immediate; /* 72 8 */ u16 dead_end:1; /* 80: 0 2 */ u16 ignore:1; /* 80: 1 2 */ u16 ignore_alts:1; /* 80: 2 2 */ u16 hint:1; /* 80: 3 2 */ u16 save:1; /* 80: 4 2 */ u16 restore:1; /* 80: 5 2 */ u16 retpoline_safe:1; /* 80: 6 2 */ u16 noendbr:1; /* 80: 7 2 */ u16 entry:1; /* 80: 8 2 */ /* XXX 7 bits hole, try to pack */ s8 instr; /* 82 1 */ u8 visited; /* 83 1 */ /* XXX 4 bytes hole, try to pack */ struct alt_group * alt_group; /* 88 8 */ struct symbol * call_dest; /* 96 8 */ struct instruction * jump_dest; /* 104 8 */ struct instruction * first_jump_src; /* 112 8 */ struct reloc * jump_table; /* 120 8 */ /* --- cacheline 2 boundary (128 bytes) --- */ struct reloc * reloc; /* 128 8 */ struct list_head alts; /* 136 16 */ struct symbol * sym; /* 152 8 */ - struct list_head stack_ops; /* 160 16 */ - struct cfi_state * cfi; /* 176 8 */ + struct stack_op * stack_ops; /* 160 8 */ + struct cfi_state * cfi; /* 168 8 */ - /* size: 184, cachelines: 3, members: 29 */ - /* sum members: 178, holes: 1, sum holes: 4 */ + /* size: 176, cachelines: 3, members: 29 */ + /* sum members: 170, holes: 1, sum holes: 4 */ /* sum bitfield members: 9 bits, bit holes: 1, sum bit holes: 7 bits */ - /* last cacheline: 56 bytes */ + /* last cacheline: 48 bytes */ }; pre: 5:58.22 real, 226.69 user, 131.22 sys, 26221520 mem post: 5:58.50 real, 229.64 user, 128.65 sys, 26221520 mem Signed-off-by: -
Peter Zijlstra authored
In preparation to changing struct instruction around a bit, avoid passing it's members by pointer and instead pass the whole thing. A cleanup in it's own right too. Signed-off-by:
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Ingo Molnar authored
Pick up dependencies - freshly merged upstream via xen-next - before applying dependent objtool changes. Signed-off-by:
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- 22 Feb, 2023 4 commits
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Linus Torvalds authored
Merge tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Hans de Goede: - AMD PMC: Improvements to aid s2idle debugging - Dell WMI-DDV: hwmon support - INT3472 camera sensor power-management: Improve privacy LED support - Intel VSEC: Base TPMI (Topology Aware Register and PM Capsule Interface) support - Mellanox: SN5600 and Nvidia L1 switch support - Microsoft Surface Support: Various cleanups + code improvements - tools/intel-speed-select: Various improvements - Miscellaneous other cleanups / fixes * tag 'platform-drivers-x86-v6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits) platform/x86: nvidia-wmi-ec-backlight: Add force module parameter platform/x86/amd/pmf: Add depends on CONFIG_POWER_SUPPLY platform/x86: dell-ddv: Prefer asynchronous probing platform/x86: dell-ddv: Add hwmon support Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces platform: mellanox: mlx-platform: Move bus shift assignment out of the loop platform: mellanox: mlx-platform: Add mux selection register to regmap platform_data/mlxreg: Add field with mapped resource address platform/mellanox: mlxreg-hotplug: Allow more flexible hotplug events configuration platform: mellanox: Extend all systems with I2C notification callback platform: mellanox: Split logic in init and exit flow platform: mellanox: Split initialization procedure platform: mellanox: Introduce support of new Nvidia L1 switch platform: mellanox: Introduce support for next-generation 800GB/s switch platform: mellanox: Cosmetic changes - rename to more common name platform: mellanox: Change "reset_pwr_converter_fail" attribute platform: mellanox: Introduce support for rack manager switch MAINTAINERS: dell-wmi-sysman: drop Divya Bharathi x86/platform/uv: Make kobj_type structure constant platform/x86: think-lmi: Make kobj_type structure constant ...
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Linus Torvalds authored
Merge tag 'tag-chrome-platform-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Tzung-Bi Shih: "New drivers: - cros_ec_uart for ChromeOS EC protocol over UART - cros_typec_vdm for USB PD Vendor Defined Message Improvements: - Preserve logs as much as possible when EC panics - Shutdown to refrain from potential HW damages when EC panics Fixes: - Fix DP_PORT_VDO to include DP_CAP_RECEPTACLE - Fix a lockdep false positive Cleanups: - Use sysfs_emit*() instead of scnprintf() - Use asm instead of asm-generic for unaligned.h Misc: - Rename module name from cros_ec_typec to cros-ec-typec - Minor fixes" * tag 'tag-chrome-platform-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (34 commits) platform/chrome: cros_ec_typec: Fix spelling mistake platform/chrome: cros_typec_vdm: Add Attention support platform/chrome: cros_ec: Add VDM attention headers platform/chrome: cros_typec_vdm: Fix VDO copy platform/chrome: cros_ec_typec: allow deferred probe of switch handles platform/chrome: cros_ec_proto: remove big stub objects from stack platform/chrome: cros_ec_uart: fix negative type promoted to high platform/chrome: cros_ec: Use per-device lockdep key platform/chrome: fix kernel-doc warnings for cros_ec_command platform/chrome: fix kernel-doc warning for last_resume_result platform/chrome: fix kernel-doc warning for suspend_timeout_ms platform/chrome: fix kernel-doc warnings for panic notifier platform/chrome: cros_ec_lpc: initialize the buf variable platform/chrome: cros_ec: Fix panic notifier registration platform/chrome: cros_typec_switch: Check for retimer flag platform/chrome: cros_typec_switch: Use fwnode* prop check platform/chrome: cros_typec_vdm: Add VDM send support platform/chrome: cros_typec_vdm: Add VDM reply support platform/chrome: cros_ec_typec: Add initial VDM support platform/chrome: cros_ec_typec: Alter module name with hyphens ...
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen updates from Juergen Gross: - help deprecate the /proc/xen files by making the related information available via sysfs - mark the Xen variants of play_dead "noreturn" - support a shared Xen platform interrupt - several small cleanups and fixes * tag 'for-linus-6.3-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: sysfs: make kobj_type structure constant x86/Xen: drop leftover VM-assist uses xen: Replace one-element array with flexible-array member xen/grant-dma-iommu: Implement a dummy probe_device() callback xen/pvcalls-back: fix permanently masked event channel xen: Allow platform PCI interrupt to be shared x86/xen/time: prefer tsc as clocksource when it is invariant x86/xen: mark xen_pv_play_dead() as __noreturn x86/xen: don't let xen_pv_play_dead() return drivers/xen/hypervisor: Expose Xen SIF flags to userspace
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Linus Torvalds authored
Merge tag 'hyperv-next-signed-20230220' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - allow Linux to run as the nested root partition for Microsoft Hypervisor (Jinank Jain and Nuno Das Neves) - clean up the return type of callback functions (Dawei Li) * tag 'hyperv-next-signed-20230220' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Fix hv_get/set_register for nested bringup Drivers: hv: Make remove callback of hyperv driver void returned Drivers: hv: Enable vmbus driver for nested root partition x86/hyperv: Add an interface to do nested hypercalls Drivers: hv: Setup synic registers in case of nested root partition x86/hyperv: Add support for detecting nested hypervisor
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- 21 Feb, 2023 27 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 updates from Catalin Marinas: - Support for arm64 SME 2 and 2.1. SME2 introduces a new 512-bit architectural register (ZT0, for the look-up table feature) that Linux needs to save/restore - Include TPIDR2 in the signal context and add the corresponding kselftests - Perf updates: Arm SPEv1.2 support, HiSilicon uncore PMU updates, ACPI support to the Marvell DDR and TAD PMU drivers, reset DTM_PMU_CONFIG (ARM CMN) at probe time - Support for DYNAMIC_FTRACE_WITH_CALL_OPS on arm64 - Permit EFI boot with MMU and caches on. Instead of cleaning the entire loaded kernel image to the PoC and disabling the MMU and caches before branching to the kernel bare metal entry point, leave the MMU and caches enabled and rely on EFI's cacheable 1:1 mapping of all of system RAM to populate the initial page tables - Expose the AArch32 (compat) ELF_HWCAP features to user in an arm64 kernel (the arm32 kernel only defines the values) - Harden the arm64 shadow call stack pointer handling: stash the shadow stack pointer in the task struct on interrupt, load it directly from this structure - Signal handling cleanups to remove redundant validation of size information and avoid reading the same data from userspace twice - Refactor the hwcap macros to make use of the automatically generated ID registers. It should make new hwcaps writing less error prone - Further arm64 sysreg conversion and some fixes - arm64 kselftest fixes and improvements - Pointer authentication cleanups: don't sign leaf functions, unify asm-arch manipulation - Pseudo-NMI code generation optimisations - Minor fixes for SME and TPIDR2 handling - Miscellaneous updates: ARCH_FORCE_MAX_ORDER is now selectable, replace strtobool() to kstrtobool() in the cpufeature.c code, apply dynamic shadow call stack in two passes, intercept pfn changes in set_pte_at() without the required break-before-make sequence, attempt to dump all instructions on unhandled kernel faults * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (130 commits) arm64: fix .idmap.text assertion for large kernels kselftest/arm64: Don't require FA64 for streaming SVE+ZA tests kselftest/arm64: Copy whole EXTRA context arm64: kprobes: Drop ID map text from kprobes blacklist perf: arm_spe: Print the version of SPE detected perf: arm_spe: Add support for SPEv1.2 inverted event filtering perf: Add perf_event_attr::config3 arm64/sme: Fix __finalise_el2 SMEver check drivers/perf: fsl_imx8_ddr_perf: Remove set-but-not-used variable arm64/signal: Only read new data when parsing the ZT context arm64/signal: Only read new data when parsing the ZA context arm64/signal: Only read new data when parsing the SVE context arm64/signal: Avoid rereading context frame sizes arm64/signal: Make interface for restore_fpsimd_context() consistent arm64/signal: Remove redundant size validation from parse_user_sigframe() arm64/signal: Don't redundantly verify FPSIMD magic arm64/cpufeature: Use helper macros to specify hwcaps arm64/cpufeature: Always use symbolic name for feature value in hwcaps arm64/sysreg: Initial unsigned annotations for ID registers arm64/sysreg: Initial annotation of signed ID registers ...
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM udpates from Russell King: - Improve Kconfig help text for Cortex A8 and Cortex A9 errata - Kconfig spelling and grammar fixes - Allow kernel-mode VFP/Neon in softirq context - Use Neon in softirq context - Implement AES-CTR/GHASH version of GCM * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9289/1: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer ARM: 9288/1: Kconfigs: fix spelling & grammar ARM: 9286/1: crypto: Implement fused AES-CTR/GHASH version of GCM ARM: 9285/1: remove meaningless arch/arm/mach-rda/Makefile ARM: 9283/1: permit non-nested kernel mode NEON in softirq context ARM: 9282/1: vfp: Manipulate task VFP state with softirqs disabled ARM: 9281/1: improve Cortex A8/A9 errata help text
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k updates from Geert Uytterhoeven: - Add seccomp support - defconfig updates - Miscellaneous fixes and improvements * tag 'm68k-for-v6.3-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: /proc/hardware should depend on PROC_FS selftests/seccomp: Add m68k support m68k: Add kernel seccomp support m68k: Check syscall_trace_enter() return code m68k: defconfig: Update defconfigs for v6.2-rc3 m68k: q40: Do not initialise statics to 0
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linuxLinus Torvalds authored
Pull s390 updates from Heiko Carstens: - Large cleanup of the con3270/tty3270 driver. Among others this fixes: - Background Color Support - ASCII Line Character Support - VT100 Support - Geometries other than 80x24 - Cleanup and improve cmpxchg() code. Also add cmpxchg_user_key() to uaccess functions, which will be used by KVM to access KVM guest memory with a specific storage key - Add support for user space events counting to CPUMF - Cleanup the vfio/ccw code, which also allows now to properly support 2K Format-2 IDALs - Move kernel page table allocation and initialization to decompressor, which finally allows to enter the kernel with dynamic address translation enabled. This in turn allows to get rid of code with special handling in the kernel, which has to distinguish if DAT is on or off - Replace kretprobe with rethook - Various improvements to vfio/ap queue resets: - Use TAPQ to verify completion of a reset in progress rather than multiple invocations of ZAPQ. - Check TAPQ response codes when verifying successful completion of ZAPQ. - Fix erroneous handling of some error response codes. - Increase the maximum amount of time to wait for successful completion of ZAPQ - Rework system call wrappers to get rid of alias functions, which were only left on s390 - Cleanup diag288_wdt watchdog driver. It has been agreed on with Guenter Roeck that this goes upstream via the s390 tree - Add missing loadparm parameter handling for list-directed ECKD ipl/reipl - Various improvements to memory detection code - Remove arch_cpu_idle_time() since the current implementation is broken, and allows user space observable accounted idle times which can temporarily decrease - Add Reset DAT-Protection support: (only) allow to change PTEs from RO to RW with a new RDP instruction. Unlike the currently used IPTE instruction, this does not necessarily guarantee that TLBs of all CPUs are synchronously flushed; and that remote CPUs can see spurious protection faults. The overall improvement for not requiring an all CPU synchronization, like it is required with IPTE, should be beneficial - Fix KFENCE page fault reporting - Smaller cleanups and improvement all over the place * tag 's390-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (182 commits) s390/irq,idle: simplify idle check s390/processor: add test_and_set_cpu_flag() and test_and_clear_cpu_flag() s390/processor: let cpu helper functions return boolean values s390/kfence: fix page fault reporting s390/zcrypt: introduce ctfm field in struct CPRBX s390: remove confusing comment from uapi types header file vfio/ccw: remove WARN_ON during shutdown s390/entry: remove toolchain dependent micro-optimization s390/mem_detect: do not truncate online memory ranges info s390/vx: remove __uint128_t type from __vector128 struct again s390/mm: add support for RDP (Reset DAT-Protection) s390/mm: define private VM_FAULT_* reasons from top bits Documentation: s390: correct spelling s390/ap: fix status returned by ap_qact() s390/ap: fix status returned by ap_aqic() s390: vfio-ap: tighten the NIB validity check Revert "s390/mem_detect: do not update output parameters on failure" s390/idle: remove arch_cpu_idle_time() and corresponding code s390/vx: use simple assignments to access __vector128 members s390/vx: add 64 and 128 bit members to __vector128 struct ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cpuid updates from Borislav Petkov: - Cache the AMD debug registers in per-CPU variables to avoid MSR writes where possible, when supporting a debug registers swap feature for SEV-ES guests - Add support for AMD's version of eIBRS called Automatic IBRS which is a set-and-forget control of indirect branch restriction speculation resources on privilege change - Add support for a new x86 instruction - LKGS - Load kernel GS which is part of the FRED infrastructure - Reset SPEC_CTRL upon init to accomodate use cases like kexec which rediscover - Other smaller fixes and cleanups * tag 'x86_cpu_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/amd: Cache debug register values in percpu variables KVM: x86: Propagate the AMD Automatic IBRS feature to the guest x86/cpu: Support AMD Automatic IBRS x86/cpu, kvm: Add the SMM_CTL MSR not present feature x86/cpu, kvm: Add the Null Selector Clears Base feature x86/cpu, kvm: Move X86_FEATURE_LFENCE_RDTSC to its native leaf x86/cpu, kvm: Add the NO_NESTED_DATA_BP feature KVM: x86: Move open-coded CPUID leaf 0x80000021 EAX bit propagation code x86/cpu, kvm: Add support for CPUID_80000021_EAX x86/gsseg: Add the new <asm/gsseg.h> header to <asm/asm-prototypes.h> x86/gsseg: Use the LKGS instruction if available for load_gs_index() x86/gsseg: Move load_gs_index() to its own new header file x86/gsseg: Make asm_load_gs_index() take an u16 x86/opcode: Add the LKGS instruction to x86-opcode-map x86/cpufeature: Add the CPU feature bit for LKGS x86/bugs: Reset speculation control settings on init x86/cpu: Remove redundant extern x86_read_arch_cap_msr()
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Dave Hansen authored
The results of "access_ok()" can be mis-speculated. The result is that you can end speculatively: if (access_ok(from, size)) // Right here even for bad from/size combinations. On first glance, it would be ideal to just add a speculation barrier to "access_ok()" so that its results can never be mis-speculated. But there are lots of system calls just doing access_ok() via "copy_to_user()" and friends (example: fstat() and friends). Those are generally not problematic because they do not _consume_ data from userspace other than the pointer. They are also very quick and common system calls that should not be needlessly slowed down. "copy_from_user()" on the other hand uses a user-controller pointer and is frequently followed up with code that might affect caches. Take something like this: if (!copy_from_user(&kernelvar, uptr, size)) do_something_with(kernelvar); If userspace passes in an evil 'uptr' that *actually* points to a kernel addresses, and then do_something_with() has cache (or other) side-effects, it could allow userspace to infer kernel data values. Add a barrier to the common copy_from_user() code to prevent mis-speculated values which happen after the copy. Also add a stub for architectures that do not define barrier_nospec(). This makes the macro usable in generic code. Since the barrier is now usable in generic code, the x86 #ifdef in the BPF code can also go away. Reported-by:
Jordy Zomer <jordyzomer@google.com> Suggested-by:
Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by:
Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by: Daniel Borkmann <daniel@iogearbox.net> # BPF bits Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull thermal control updates from Rafael Wysocki: "The majority of changes here are related to the general switch-over to using arrays of generic trip point structures registered along with a thermal zone instead of trip point callbacks (this has been done mostly by Daniel Lezcano with some help from yours truly on the Intel drivers front). Apart from that and the related reorganization of code, there are some enhancements of the existing driver and a new Mediatek Low Voltage Thermal Sensor (LVTS) driver. The Intel powerclamp undergoes a major rework so it will use the generic idle_inject facility for CPU idle time injection going forward and it will take additional module parameters for specifying the subset of CPUs to be affected by it (work done by Srinivas Pandruvada). Also included are assorted fixes and a whole bunch of cleanups. Specifics: - Rework a large bunch of drivers to use the generic thermal trip structure and use the opportunity to do more cleanups by removing unused functions from the OF code (Daniel Lezcano) - Remove core header inclusion from drivers (Daniel Lezcano) - Fix some locking issues related to the generic thermal trip rework (Johan Hovold) - Fix a crash when requesting the critical temperature on tegra, which is related to the generic trip point work (Jon Hunter) - Clean up thermal device unregistration code (Viresh Kumar) - Fix and clean up thermal control core initialization error code paths (Daniel Lezcano) - Relocate the trip points handling code into a separate file (Daniel Lezcano) - Make the thermal core fail registration of thermal zones and cooling devices if the thermal class has not been registered (Rafael Wysocki) - Add trip point initialization helper functions for ACPI-defined trip points and modify two thermal drivers to use them (Rafael Wysocki, Daniel Lezcano) - Make the core thermal control code use sysfs_emit_at() instead of scnprintf() where applicable (ye xingchen) - Consolidate code accessing the Intel TCC (Thermal Control Circuitry) MSRs by introducing library functions for that and making the TCC-related code in thermal drivers use them (Zhang Rui) - Enhance the x86_pkg_temp_thermal driver to support dynamic tjmax changes (Zhang Rui) - Address an "unsigned expression compared with zero" warning in the intel_soc_dts_iosf thermal driver (Yang Li) - Update comments regarding two functions in the Intel Menlow thermal driver (Deming Wang) - Use sysfs_emit_at() instead of scnprintf() in the int340x thermal driver (ye xingchen) - Make the intel_pch thermal driver support the Wellsburg PCH (Tim Zimmermann) - Modify the intel_pch and processor_thermal_device_pci thermal drivers use generic trip point tables instead of thermal zone trip point callbacks (Daniel Lezcano) - Add production mode attribute sysfs attribute to the int340x thermal driver (Srinivas Pandruvada) - Rework dynamic trip point updates handling and locking in the int340x thermal driver (Rafael Wysocki) - Make the int340x thermal driver use a generic trip points table instead of thermal zone trip point callbacks (Rafael Wysocki, Daniel Lezcano) - Clean up and improve the int340x thermal driver (Rafael Wysocki) - Simplify and clean up the intel_pch thermal driver (Rafael Wysocki) - Fix the Intel powerclamp thermal driver and make it use the common idle injection framework (Srinivas Pandruvada) - Add two module parameters, cpumask and max_idle, to the Intel powerclamp thermal driver to allow it to affect only a specific subset of CPUs instead of all of them (Srinivas Pandruvada) - Make the Intel quark_dts thermal driver Use generic trip point objects instead of its own trip point representation (Daniel Lezcano) - Add toctree entry for thermal documents and fix two issues in the Intel powerclamp driver documentation (Bagas Sanjaya) - Use strscpy() to instead of strncpy() in the thermal core (Xu Panda) - Fix thermal_sampling_exit() (Vincent Guittot) - Add Mediatek Low Voltage Thermal Sensor (LVTS) driver (Balsam Chihi) - Add r8a779g0 RCar support to the rcar_gen3 thermal driver (Geert Uytterhoeven) - Fix useless call to set_trips() when resuming in the rcar_gen3 thermal control driver and add interrupt support detection at init time to it (Niklas Söderlund) - Fix memory corruption in the hi3660 thermal driver (Yongqin Liu) - Fix include path for libnl3 in pkg-config file for libthermal (Vibhav Pant) - Remove syscfg-based driver for st as the platform is not supported any more (Alain Volmat)" * tag 'thermal-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (135 commits) thermal/drivers/st: Remove syscfg based driver thermal: Remove core header inclusion from drivers tools/lib/thermal: Fix include path for libnl3 in pkg-config file. thermal/drivers/hisi: Drop second sensor hi3660 thermal/drivers/rcar_gen3_thermal: Fix device initialization thermal/drivers/rcar_gen3_thermal: Create device local ops struct thermal/drivers/rcar_gen3_thermal: Do not call set_trips() when resuming thermal/drivers/rcar_gen3: Add support for R-Car V4H dt-bindings: thermal: rcar-gen3-thermal: Add r8a779g0 support thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver dt-bindings: thermal: mediatek: Add LVTS thermal controllers thermal/drivers/mediatek: Relocate driver to mediatek folder tools/lib/thermal: Fix thermal_sampling_exit() Documentation: powerclamp: Fix numbered lists formatting Documentation: powerclamp: Escape wildcard in cpumask description Documentation: admin-guide: Add toctree entry for thermal docs thermal: intel: powerclamp: Add two module parameters Documentation: admin-guide: Move intel_powerclamp documentation thermal: core: Use sysfs_emit_at() instead of scnprintf() thermal: intel: powerclamp: Fix duration module parameter ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull ACPI updates from Rafael Wysocki: "These fix a frequency limit issue in the ACPI processor performance library code, fix a few issues in the ACPICA code, improve Crystal Cove support in the ACPI PMIC driver, fix string handling in the ACPI battery driver, add IRQ override quirks for a few machines more, fix other assorted problems and clean up code and documentation. Specifics: - Drop port I/O validation for some regions to avoid AML failures due to rejections of legitimate port I/O writes (Mario Limonciello) - Constify acpi_get_handle() pathname argument to allow its callers to pass const pathnames to it (Sakari Ailus) - Prevent acpi_ns_simple_repair() from crashing in some cases when AE_AML_NO_RETURN_VALUE should be returned (Daniil Tatianin) - Fix typo in CDAT DSMAS struct definition (Lukas Wunner) - Drop an unnecessary (void *) conversion from the ACPI processor driver (Zhou jie) - Modify the ACPI processor performance library code to use the "no limit" frequency QoS as appropriate and adjust the intel_pstate driver accordingly (Rafael Wysocki) - Add support for NBFT to the ACPI table parser (Stuart Hayes) - Introduce list of known non-PNP devices to avoid enumerating some of them as PNP devices (Rafael Wysocki) - Add x86 ACPI paths to the ACPI entry in MAINTAINERS to allow scripts to report the actual maintainers information (Rafael Wysocki) - Add two more entries to the ACPI IRQ override quirk list (Adam Niederer, Werner Sembach) - Add a pmic_i2c_address entry for Intel Bay Trail Crystal Cove to allow intel_soc_pmic_exec_mipi_pmic_seq_element() to be used with the Bay Trail Crystal Cove PMIC OpRegion driver (Hans de Goede) - Add comments with DSDT power OpRegion field names to the ACPI PMIC driver (Hans de Goede) - Fix string termination handling in the ACPI battery driver (Armin Wolf) - Limit error type to 32-bit width in the ACPI APEI error injection code (Shuai Xue) - Fix Lenovo Ideapad Z570 DMI match in the ACPI backlight driver (Hans de Goede) - Silence missing prototype warnings in some places in the ACPI-related code (Ammar Faizi) - Make kobj_type structures used in the ACPI code constant (Thomas Weißschuh) - Correct spelling in firmware-guide/ACPI (Randy Dunlap) - Clarify the meaning of Explicit and Implicit in the _DSD GPIO properties documentation (Andy Shevchenko) - Fix some kernel-doc comments in the ACPI CPPC library code (Yang Li)" * tag 'acpi-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (25 commits) ACPI: make kobj_type structures constant Documentation: firmware-guide: gpio-properties: Clarify Explicit and Implicit ACPICA: Fix typo in CDAT DSMAS struct definition ACPI: resource: Do IRQ override on all TongFang GMxRGxx ACPI: resource: Add IRQ overrides for MAINGEAR Vector Pro 2 models ACPI: CPPC: Fix some kernel-doc comments ACPI: video: Fix Lenovo Ideapad Z570 DMI match Documentation: firmware-guide/ACPI: correct spelling ACPI: PMIC: Add comments with DSDT power opregion field names ACPI: battery: Increase maximum string length ACPI: battery: Fix buffer overread if not NUL-terminated ACPI: APEI: EINJ: Limit error type to 32-bit width MAINTAINERS: Add x86 ACPI paths to the ACPI entry ACPI: battery: Fix missing NUL-termination with large strings ACPI: PNP: Introduce list of known non-PNP devices ACPICA: nsrepair: handle cases without a return value correctly ACPI: Silence missing prototype warnings cpufreq: intel_pstate: Drop ACPI _PSS states table patching ACPI: processor: perflib: Avoid updating frequency QoS unnecessarily ACPI: processor: perflib: Use the "no limit" frequency QoS ... -
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management updates from Rafael Wysocki: "These add EPP support to the AMD P-state cpufreq driver, add support for new platforms to the Intel RAPL power capping driver, intel_idle and the Qualcomm cpufreq driver, enable thermal cooling for Tegra194, drop the custom cpufreq driver for loongson1 that is not necessary any more (and the corresponding cpufreq platform device), fix assorted issues and clean up code. Specifics: - Add EPP support to the AMD P-state cpufreq driver (Perry Yuan, Wyes Karny, Arnd Bergmann, Bagas Sanjaya) - Drop the custom cpufreq driver for loongson1 that is not necessary any more and the corresponding cpufreq platform device (Keguang Zhang) - Remove "select SRCU" from system sleep, cpufreq and OPP Kconfig entries (Paul E. McKenney) - Enable thermal cooling for Tegra194 (Yi-Wei Wang) - Register module device table and add missing compatibles for cpufreq-qcom-hw (Nícolas F. R. A. Prado, Abel Vesa and Luca Weiss) - Various dt binding updates for qcom-cpufreq-nvmem and opp-v2-kryo-cpu (Christian Marangi) - Make kobj_type structure in the cpufreq core constant (Thomas Weißschuh) - Make cpufreq_unregister_driver() return void (Uwe Kleine-König) - Make the TEO cpuidle governor check CPU utilization in order to refine idle state selection (Kajetan Puchalski) - Make Kconfig select the haltpoll cpuidle governor when the haltpoll cpuidle driver is selected and replace a default_idle() call in that driver with arch_cpu_idle() to allow MWAIT to be used (Li RongQing) - Add Emerald Rapids Xeon support to the intel_idle driver (Artem Bityutskiy) - Add ARCH_SUSPEND_POSSIBLE dependencies for ARMv4 cpuidle drivers to avoid randconfig build failures (Arnd Bergmann) - Make kobj_type structures used in the cpuidle sysfs interface constant (Thomas Weißschuh) - Make the cpuidle driver registration code update microsecond values of idle state parameters in accordance with their nanosecond values if they are provided (Rafael Wysocki) - Make the PSCI cpuidle driver prevent topology CPUs from being suspended on PREEMPT_RT (Krzysztof Kozlowski) - Document that pm_runtime_force_suspend() cannot be used with DPM_FLAG_SMART_SUSPEND (Richard Fitzgerald) - Add EXPORT macros for exporting PM functions from drivers (Richard Fitzgerald) - Remove /** from non-kernel-doc comments in hibernation code (Randy Dunlap) - Fix possible name leak in powercap_register_zone() (Yang Yingliang) - Add Meteor Lake and Emerald Rapids support to the intel_rapl power capping driver (Zhang Rui) - Modify the idle_inject power capping facility to support 100% idle injection (Srinivas Pandruvada) - Fix large time windows handling in the intel_rapl power capping driver (Zhang Rui) - Fix memory leaks with using debugfs_lookup() in the generic PM domains and Energy Model code (Greg Kroah-Hartman) - Add missing 'cache-unified' property in the example for kryo OPP bindings (Rob Herring) - Fix error checking in opp_migrate_dentry() (Qi Zheng) - Let qcom,opp-fuse-level be a 2-long array for qcom SoCs (Konrad Dybcio) - Modify some power management utilities to use the canonical ftrace path (Ross Zwisler) - Correct spelling problems for Documentation/power/ as reported by codespell (Randy Dunlap)" * tag 'pm-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (53 commits) Documentation: amd-pstate: disambiguate user space sections cpufreq: amd-pstate: Fix invalid write to MSR_AMD_CPPC_REQ dt-bindings: opp: opp-v2-kryo-cpu: enlarge opp-supported-hw maximum dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional dt-bindings: cpufreq: qcom-cpufreq-nvmem: specify supported opp tables PM: Add EXPORT macros for exporting PM functions cpuidle: psci: Do not suspend topology CPUs on PREEMPT_RT MIPS: loongson32: Drop obsolete cpufreq platform device powercap: intel_rapl: Fix handling for large time window cpuidle: driver: Update microsecond values of state parameters as needed cpuidle: sysfs: make kobj_type structures constant cpuidle: add ARCH_SUSPEND_POSSIBLE dependencies PM: EM: fix memory leak with using debugfs_lookup() PM: domains: fix memory leak with using debugfs_lookup() cpufreq: Make kobj_type structure constant cpufreq: davinci: Fix clk use after free cpufreq: amd-pstate: avoid uninitialized variable use cpufreq: Make cpufreq_unregister_driver() return void OPP: fix error checking in opp_migrate_dentry() dt-bindings: cpufreq: cpufreq-qcom-hw: Add SM8550 compatible ... -
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull hardening updates from Kees Cook: "Beyond some specific LoadPin, UBSAN, and fortify features, there are other fixes scattered around in various subsystems where maintainers were okay with me carrying them in my tree or were non-responsive but the patches were reviewed by others: - Replace 0-length and 1-element arrays with flexible arrays in various subsystems (Paulo Miguel Almeida, Stephen Rothwell, Kees Cook) - randstruct: Disable Clang 15 support (Eric Biggers) - GCC plugins: Drop -std=gnu++11 flag (Sam James) - strpbrk(): Refactor to use strchr() (Andy Shevchenko) - LoadPin LSM: Allow root filesystem switching when non-enforcing - fortify: Use dynamic object size hints when available - ext4: Fix CFI function prototype mismatch - Nouveau: Fix DP buffer size arguments - hisilicon: Wipe entire crypto DMA pool on error - coda: Fully allocate sig_inputArgs - UBSAN: Improve arm64 trap code reporting - copy_struct_from_user(): Add minimum bounds check on kernel buffer size" * tag 'hardening-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: randstruct: disable Clang 15 support uaccess: Add minimum bounds check on kernel buffer size arm64: Support Clang UBSAN trap codes for better reporting coda: Avoid partial allocation of sig_inputArgs gcc-plugins: drop -std=gnu++11 to fix GCC 13 build lib/string: Use strchr() in strpbrk() crypto: hisilicon: Wipe entire pool on error net/i40e: Replace 0-length array with flexible array io_uring: Replace 0-length array with flexible array ext4: Fix function prototype mismatch for ext4_feat_ktype i915/gvt: Replace one-element array with flexible-array member drm/nouveau/disp: Fix nvif_outp_acquire_dp() argument size LoadPin: Allow filesystem switch when not enforcing LoadPin: Move pin reporting cleanly out of locking LoadPin: Refactor sysctl initialization LoadPin: Refactor read-only check into a helper ARM: ixp4xx: Replace 0-length arrays with flexible arrays fortify: Use __builtin_dynamic_object_size() when available rxrpc: replace zero-lenth array with DECLARE_FLEX_ARRAY() helper -
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linuxLinus Torvalds authored
Pull seccomp update from Kees Cook: - Fix kernel-doc function name ordering to avoid warning (Randy Dunlap) * tag 'seccomp-v6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: seccomp: fix kernel-doc function name warning
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcuLinus Torvalds authored
Pull RCU updates from Paul McKenney: - Documentation updates - Miscellaneous fixes, perhaps most notably: - Throttling callback invocation based on the number of callbacks that are now ready to invoke instead of on the total number of callbacks - Several patches that suppress false-positive boot-time diagnostics, for example, due to lockdep not yet being initialized - Make expedited RCU CPU stall warnings dump stacks of any tasks that are blocking the stalled grace period. (Normal RCU CPU stall warnings have done this for many years) - Lazy-callback fixes to avoid delays during boot, suspend, and resume. (Note that lazy callbacks must be explicitly enabled, so this should not (yet) affect production use cases) - Make kfree_rcu() and friends take advantage of polled grace periods, thus reducing memory footprint by almost two orders of magnitude, admittedly on a microbenchmark This also begins the transition from kfree_rcu(p) to kfree_rcu_mightsleep(p). This transition was motivated by bugs where kfree_rcu(p), which can block, was typed instead of the intended kfree_rcu(p, rh) - SRCU updates, perhaps most notably fixing a bug that causes SRCU to fail when booted on a system with a non-zero boot CPU. This surprising situation actually happens for kdump kernels on the powerpc architecture This also adds an srcu_down_read() and srcu_up_read(), which act like srcu_read_lock() and srcu_read_unlock(), but allow an SRCU read-side critical section to be handed off from one task to another - Clean up the now-useless SRCU Kconfig option There are a few more commits that are not yet acked or pulled into maintainer trees, and these will be in a pull request for a later merge window - RCU-tasks updates, perhaps most notably these fixes: - A strange interaction between PID-namespace unshare and the RCU-tasks grace period that results in a low-probability but very real hang - A race between an RCU tasks rude grace period on a single-CPU system and CPU-hotplug addition of the second CPU that can result in a too-short grace period - A race between shrinking RCU tasks down to a single callback list and queuing a new callback to some other CPU, but where that queuing is delayed for more than an RCU grace period. This can result in that callback being stranded on the non-boot CPU - Torture-test updates and fixes - Torture-test scripting updates and fixes - Provide additional RCU CPU stall-warning information in kernels built with CONFIG_RCU_CPU_STALL_CPUTIME=y, and restore the full five-minute timeout limit for expedited RCU CPU stall warnings * tag 'rcu.2023.02.10a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (80 commits) rcu/kvfree: Add kvfree_rcu_mightsleep() and kfree_rcu_mightsleep() kernel/notifier: Remove CONFIG_SRCU init: Remove "select SRCU" fs/quota: Remove "select SRCU" fs/notify: Remove "select SRCU" fs/btrfs: Remove "select SRCU" fs: Remove CONFIG_SRCU drivers/pci/controller: Remove "select SRCU" drivers/net: Remove "select SRCU" drivers/md: Remove "select SRCU" drivers/hwtracing/stm: Remove "select SRCU" drivers/dax: Remove "select SRCU" drivers/base: Remove CONFIG_SRCU rcu: Disable laziness if lazy-tracking says so rcu: Track laziness during boot and suspend rcu: Remove redundant call to rcu_boost_kthread_setaffinity() rcu: Allow up to five minutes expedited RCU CPU stall-warning timeouts rcu: Align the output of RCU CPU stall warning messages rcu: Add RCU stall diagnosis information sched: Add helper nr_context_switches_cpu() ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroupLinus Torvalds authored
Pull cgroup updates from Tejun Heo: "All the changes are trivial: documentation updates and a trivial code cleanup" * tag 'cgroup-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup/cpuset: fix a few kernel-doc warnings & coding style docs: cgroup-v1: use numbered lists for user interface setup docs: cgroup-v1: add internal cross-references docs: cgroup-v1: make swap extension subsections subsections docs: cgroup-v1: use bullet lists for list of stat file tables docs: cgroup-v1: move hierarchy of accounting caption docs: cgroup-v1: fix footnotes docs: cgroup-v1: use code block for locking order schema docs: cgroup-v1: wrap remaining admonitions in admonition blocks docs: cgroup-v1: replace custom note constructs with appropriate admonition blocks cgroup/cpuset: no need to explicitly init a global static variable
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/wqLinus Torvalds authored
Pull workqueue updates from Tejun Heo: - When per-cpu workqueue workers expire after sitting idle for too long, they used to wake up to the CPU that they're bound to in order to exit. This unfortunately could cause unwanted disturbances on CPUs isolated for e.g. RT applications. The worker exit path is restructured so that an existing worker is unbound from its CPU before being woken up for the last time, allowing it to migrate away from an isolated CPU for exiting. - A couple debug improvements. Watchdog dump is made more compact and workqueue now warns if used-after-free during the RCU grace period after destroy_workqueue(). * tag 'wq-for-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Fold rebind_worker() within rebind_workers() workqueue: Unbind kworkers before sending them to exit() workqueue: Don't hold any lock while rcuwait'ing for !POOL_MANAGER_ACTIVE workqueue: Convert the idle_timer to a timer + work_struct workqueue: Factorize unbind/rebind_workers() logic workqueue: Protects wq_unbound_cpumask with wq_pool_attach_mutex workqueue: Make show_pwq() use run-length encoding workqueue: Add a new flag to spot the potential UAF error
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq updates from Thomas Gleixner: "Updates for the interrupt subsystem: Core: - Move the interrupt affinity spreading mechanism into lib/group_cpus so it can be used for similar spreading requirements, e.g. in the block multi-queue code This also contains a first usecase in the block multi-queue code which Jens asked to take along with the librarization - Improve irqdomain locking to close a number race conditions which can be observed with massive parallel device driver probing - Enforce and document the semantics of disable_irq() which cannot be invoked safely from non-sleepable context - Move the IPI multiplexing code from the Apple AIC driver into the core, so it can be reused by RISCV Drivers: - Plug OF node refcounting leaks in various drivers - Correctly mark level triggered interrupts in the Broadcom L2 drivers - The usual small fixes and improvements - No new drivers for the record!" * tag 'irq-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) irqchip/irq-bcm7120-l2: Set IRQ_LEVEL for level triggered interrupts irqchip/irq-brcmstb-l2: Set IRQ_LEVEL for level triggered interrupts irqdomain: Switch to per-domain locking irqchip/mvebu-odmi: Use irq_domain_create_hierarchy() irqchip/loongson-pch-msi: Use irq_domain_create_hierarchy() irqchip/gic-v3-mbi: Use irq_domain_create_hierarchy() irqchip/gic-v3-its: Use irq_domain_create_hierarchy() irqchip/gic-v2m: Use irq_domain_create_hierarchy() irqchip/alpine-msi: Use irq_domain_add_hierarchy() x86/uv: Use irq_domain_create_hierarchy() x86/ioapic: Use irq_domain_create_hierarchy() irqdomain: Clean up irq_domain_push/pop_irq() irqdomain: Drop leftover brackets irqdomain: Drop dead domain-name assignment irqdomain: Drop revmap mutex irqdomain: Fix domain registration race irqdomain: Fix mapping-creation race irqdomain: Refactor __irq_domain_alloc_irqs() irqdomain: Look for existing mapping only once irqdomain: Drop bogus fwspec-mapping error handling ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer updates from Thomas Gleixner: "Updates for timekeeping, timers and clockevent/source drivers: Core: - Yet another round of improvements to make the clocksource watchdog more robust: - Relax the clocksource-watchdog skew criteria to match the NTP criteria. - Temporarily skip the watchdog when high memory latencies are detected which can lead to false-positives. - Provide an option to enable TSC skew detection even on systems where TSC is marked as reliable. Sigh! - Initialize the restart block in the nanosleep syscalls to be directed to the no restart function instead of doing a partial setup on entry. This prevents an erroneous restart_syscall() invocation from corrupting user space data. While such a situation is clearly a user space bug, preventing this is a correctness issue and caters to the least suprise principle. - Ignore the hrtimer slack for realtime tasks in schedule_hrtimeout() to align it with the nanosleep semantics. Drivers: - The obligatory new driver bindings for Mediatek, Rockchip and RISC-V variants. - Add support for the C3STOP misfeature to the RISC-V timer to handle the case where the timer stops in deeper idle state. - Set up a static key in the RISC-V timer correctly before first use. - The usual small improvements and fixes all over the place" * tag 'timers-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits) clocksource/drivers/timer-sun4i: Add CLOCK_EVT_FEAT_DYNIRQ clocksource/drivers/em_sti: Mark driver as non-removable clocksource/drivers/sh_tmu: Mark driver as non-removable clocksource/drivers/riscv: Patch riscv_clock_next_event() jump before first use clocksource/drivers/timer-microchip-pit64b: Add delay timer clocksource/drivers/timer-microchip-pit64b: Select driver only on ARM dt-bindings: timer: sifive,clint: add comaptibles for T-Head's C9xx dt-bindings: timer: mediatek,mtk-timer: add MT8365 clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback clocksource/drivers/sh_cmt: Mark driver as non-removable clocksource/drivers/timer-microchip-pit64b: Drop obsolete dependency on COMPILE_TEST clocksource/drivers/riscv: Increase the clock source rating clocksource/drivers/timer-riscv: Set CLOCK_EVT_FEAT_C3STOP based on DT dt-bindings: timer: Add bindings for the RISC-V timer device RISC-V: time: initialize hrtimer based broadcast clock event device dt-bindings: timer: rk-timer: Add rktimer for rv1126 time/debug: Fix memory leak with using debugfs_lookup() clocksource: Enable TSC watchdog checking of HPET and PMTMR only when requested posix-timers: Use atomic64_try_cmpxchg() in __update_gt_cputime() clocksource: Verify HPET and PMTMR when TSC unverified ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull miscellaneous x86 cleanups from Thomas Gleixner: - Correct the common copy and pasted mishandling of kstrtobool() in the strict_sas_size() setup function - Make recalibrate_cpu_khz() an GPL only export - Check TSC feature before doing anything else which avoids pointless code execution if TSC is not available - Remove or fixup stale and misleading comments - Remove unused or pointelessly duplicated variables - Spelling and typo fixes * tag 'x86-cleanups-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hotplug: Remove incorrect comment about mwait_play_dead() x86/tsc: Do feature check as the very first thing x86/tsc: Make recalibrate_cpu_khz() export GPL only x86/cacheinfo: Remove unused trace variable x86/Kconfig: Fix spellos & punctuation x86/signal: Fix the value returned by strict_sas_size() x86/cpu: Remove misleading comment x86/setup: Move duplicate boot_cpu_data definition out of the ifdeffery x86/boot/e820: Fix typo in e820.c comment
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 vdso updates from Borislav Petkov: - Add getcpu support for the 32-bit version of the vDSO - Some smaller fixes * tag 'x86_vdso_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/vdso: Fix -Wmissing-prototypes warnings x86/vdso: Fake 32bit VDSO build on 64bit compile for vgetcpu selftests: Emit a warning if getcpu() is missing on 32bit x86/vdso: Provide getcpu for x86-32. x86/cpu: Provide the full setup for getcpu() on x86-32 x86/vdso: Move VDSO image init to vdso2c generated code
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 microcode loader updates from Borislav Petkov: - Fix mixed steppings support on AMD which got broken somewhere along the way - Improve revision reporting - Properly check CPUID capabilities after late microcode upgrade to avoid false positives - A garden variety of other small fixes * tag 'x86_microcode_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode/core: Return an error only when necessary x86/microcode/AMD: Fix mixed steppings support x86/microcode/AMD: Add a @cpu parameter to the reloading functions x86/microcode/amd: Remove load_microcode_amd()'s bsp parameter x86/microcode: Allow only "1" as a late reload trigger value x86/microcode/intel: Print old and new revision during early boot x86/microcode/intel: Pass the microcode revision to print_ucode_info() directly x86/microcode: Adjust late loading result reporting message x86/microcode: Check CPU capabilities after late microcode update correctly x86/microcode: Add a parameter to microcode_check() to store CPU capabilities x86/microcode: Use the DEVICE_ATTR_RO() macro x86/microcode/AMD: Handle multiple glued containers properly x86/microcode/AMD: Rename a couple of functions
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 resource control updates from Borislav Petkov: - Add support for a new AMD feature called slow memory bandwidth allocation. Its goal is to control resource allocation in external slow memory which is connected to the machine like for example through CXL devices, accelerators etc * tag 'x86_cache_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/resctrl: Fix a silly -Wunused-but-set-variable warning Documentation/x86: Update resctrl.rst for new features x86/resctrl: Add interface to write mbm_local_bytes_config x86/resctrl: Add interface to write mbm_total_bytes_config x86/resctrl: Add interface to read mbm_local_bytes_config x86/resctrl: Add interface to read mbm_total_bytes_config x86/resctrl: Support monitor configuration x86/resctrl: Add __init attribute to rdt_get_mon_l3_config() x86/resctrl: Detect and configure Slow Memory Bandwidth Allocation x86/resctrl: Include new features in command line options x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag x86/resctrl: Add a new resource type RDT_RESOURCE_SMBA x86/cpufeatures: Add Slow Memory Bandwidth Allocation feature flag x86/resctrl: Replace smp_call_function_many() with on_each_cpu_mask()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 asm alternatives updates from Borislav Petkov: - Teach the static_call patching infrastructure to handle conditional tall calls properly which can be static calls too - Add proper struct alt_instr.flags which controls different aspects of insn patching behavior * tag 'x86_alternatives_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/static_call: Add support for Jcc tail-calls x86/alternatives: Teach text_poke_bp() to patch Jcc.d32 instructions x86/alternatives: Introduce int3_emulate_jcc() x86/alternatives: Add alt_instr.flags
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/rasLinus Torvalds authored
Pull EDAC updates from Borislav Petkov: - Add a driver for the RAS functionality on Xilinx's on chip memory controller - Add support for decoding errors from the first and second level memory on SKL-based hardware - Add support for the memory controllers in Intel Granite Rapids and Emerald Rapids machines - First round of amd64_edac driver simplification and removal of unneeded functionality - The usual cleanups and fixes * tag 'edac_updates_for_v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras: EDAC/amd64: Shut up an -Werror,-Wsometimes-uninitialized clang false positive EDAC/amd64: Remove early_channel_count() EDAC/amd64: Remove PCI Function 0 EDAC/amd64: Remove PCI Function 6 EDAC/amd64: Remove scrub rate control for Family 17h and later EDAC/amd64: Don't set up EDAC PCI control on Family 17h+ EDAC/i10nm: Add driver decoder for Sapphire Rapids server EDAC/i10nm: Add Intel Granite Rapids server support EDAC/i10nm: Make more configurations CPU model specific EDAC/i10nm: Add Intel Emerald Rapids server support EDAC/skx_common: Delete duplicated and unreachable code EDAC/skx_common: Enable EDAC support for the "near" memory EDAC/qcom: Add platform_device_id table for module autoloading EDAC/zynqmp: Add EDAC support for Xilinx ZynqMP OCM dt-bindings: edac: Add bindings for Xilinx ZynqMP OCM
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RAS updates from Borislav Petkov: - Add support for reporting more bits of the physical address on error, on newer AMD CPUs - Mask out bits which don't belong to the address of the error being reported * tag 'ras_core_for_v6.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Mask out non-address bits from machine check bank x86/mce: Add support for Extended Physical Address MCA changes x86/mce: Define a function to extract ErrorAddr from MCA_ADDR
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 platform update from Ingo Molnar: - Simplify add_rtc_cmos() - Use strscpy() in the mcelog code * tag 'x86-platform-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce/dev-mcelog: use strscpy() to instead of strncpy() x86/rtc: Simplify PNP ids check
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 mm update from Ingo Molnar: "Micro-optimize __flush_tlb_all()" * tag 'x86-mm-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Use cpu_feature_enabled() when checking global pages support
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fpu updates from Ingo Molnar: - Replace zero-length array in struct xregs_state with flexible-array member, to help the enabling of stricter compiler checks. - Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads. * tag 'x86-fpu-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Don't set TIF_NEED_FPU_LOAD for PF_IO_WORKER threads x86/fpu: Replace zero-length array in struct xregs_state with flexible-array member
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 core updates from Ingo Molnar: - Clean up the signal frame layout tests - Suppress KMSAN false positive reports in arch_within_stack_frames() * tag 'x86-core-2023-02-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Suppress KMSAN reports in arch_within_stack_frames() x86/signal/compat: Move sigaction_compat_abi() to signal_64.c x86/signal: Move siginfo field tests
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