- 11 Jul, 2022 20 commits
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Matthew Rosato authored
The KVM_S390_ZPCI_OP ioctl provides a mechanism for managing hardware-assisted virtualization features for s390x zPCI passthrough. Add the first 2 operations, which can be used to enable/disable the specified device for Adapter Event Notification interpretation. Signed-off-by:
Matthew Rosato <mjrosato@linux.ibm.com> Acked-by:
Pierre Morel <pmorel@linux.ibm.com> Reviewed-by:
Thomas Huth <thuth@redhat.com> Link: https://lore.kernel.org/r/20220606203325.110625-21-mjrosato@linux.ibm.comSigned-off-by:
Christian Borntraeger <borntraeger@linux.ibm.com>
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Matthew Rosato authored
When doing load/store interpretation, the maximum store block length is determined by the underlying firmware, not the host kernel API. Reflect that in the associated Query PCI Function Group clp capability and let userspace decide which is appropriate to present to the guest. Reviewed-by:
Alex Williamson <alex.williamson@redhat.com> Link: https://lore.kernel.org/r/20220606203325.110625-20-mjrosato@linux.ibm.comSigned-off-by:
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Matthew Rosato authored
The function handle is a system-wide unique identifier for a zPCI device. With zPCI instruction interpretation, the host will no longer be executing the zPCI instructions on behalf of the guest. As a result, the guest needs to use the real function handle in order for firmware to associate the instruction with the proper PCI function. Let's provide that handle to the guest. Reviewed-by:
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Matthew Rosato authored
During vfio-pci open_device, pass the KVM associated with the vfio group (if one exists). This is needed in order to pass a special indicator (GISA) to firmware to allow zPCI interpretation facilities to be used for only the specific KVM associated with the vfio-pci device. During vfio-pci close_device, unregister the notifier. Signed-off-by:
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Matthew Rosato authored
These routines will be invoked at the time an s390x vfio-pci device is associated with a KVM (or when the association is removed), allowing the zPCI device to enable or disable load/store intepretation mode; this requires the host zPCI device to inform firmware of the unique token (GISA designation) that is associated with the owning KVM. Signed-off-by:
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Matthew Rosato authored
These routines will be wired into a kvm ioctl in order to respond to requests to enable / disable a device for Adapter Event Notifications / Adapter Interuption Forwarding. Reviewed-by:
Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by:
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Matthew Rosato authored
The guest must have access to certain facilities in order to allow interpretive execution of zPCI instructions and adapter event notifications. However, there are some cases where a guest might disable interpretation -- provide a mechanism via which we can defer enabling the associated zPCI interpretation facilities until the guest indicates it wishes to use them. Reviewed-by:
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Matthew Rosato authored
In cases where interrupts are not forwarded to the guest via firmware, KVM is responsible for ensuring delivery. When an interrupt presents with the forwarding bit, we must process the forwarding tables until all interrupts are delivered. Reviewed-by:
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Matthew Rosato authored
Initial setup for Adapter Event Notification Interpretation for zPCI passthrough devices. Specifically, allocate a structure for forwarding of adapter events and pass the address of this structure to firmware. Reviewed-by:
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Matthew Rosato authored
This structure will be used to carry kvm passthrough information related to zPCI devices. Reviewed-by:
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Matthew Rosato authored
The current contents of vfio-pci-zdev are today only useful in a KVM environment; let's tie everything currently under vfio-pci-zdev to this Kconfig statement and require KVM in this case, reducing complexity (e.g. symbol lookups). Signed-off-by:
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Matthew Rosato authored
Store information about what IOAT designation types are supported by underlying hardware as well as the largest store block size allowed. These values will be needed by passthrough. Reviewed-by:
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Matthew Rosato authored
For passthrough devices, we will need to know the GISA designation of the guest if interpretation facilities are to be used. Setup to stash this in the zdev and set a default of 0 (no GISA designation) for now; a subsequent patch will set a valid GISA designation for passthrough devices. Also, extend mpcific routines to specify this stashed designation as part of the mpcific command. Reviewed-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
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Matthew Rosato authored
A subsequent patch will be issuing SIC from KVM -- export the necessary routine and make the operation control definitions available from a header. Because the routine will now be exported, let's rename __zpci_set_irq_ctrl to zpci_set_irq_ctrl and get rid of the zero'd iib wrapper function of the same name. Reviewed-by:
Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by:
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Matthew Rosato authored
When doing device passthrough where interrupts are being forwarded from host to guest, we wish to use a pinned section of guest memory as the vector (the same memory used by the guest as the vector). To accomplish this, add a new parameter for airq_iv_create which allows passing an existing vector to be used instead of allocating a new one. The caller is responsible for ensuring the vector is pinned in memory as well as for unpinning the memory when the vector is no longer needed. A subsequent patch will use this new parameter for zPCI interpretation. Reviewed-by:
Cornelia Huck <cohuck@redhat.com> Signed-off-by:
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Matthew Rosato authored
A subsequent patch will introduce an airq handler that requires additional TPI information beyond directed vs floating, so pass the entire tpi_info structure via the handler. Only pci actually uses this information today, for the other airq handlers this is effectively a no-op. Reviewed-by:
Eric Farman <farman@linux.ibm.com> Reviewed-by:
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Matthew Rosato authored
Detect the Adapter Interruption Suppression Interpretation facility. Reviewed-by:
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Matthew Rosato authored
Detect the Adapter Event Notification Interpretation facility. Reviewed-by:
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Matthew Rosato authored
Detect the Adapter Interruption Source ID Interpretation facility. Reviewed-by:
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Matthew Rosato authored
Detect the zPCI Load/Store Interpretation facility. Reviewed-by:
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- 06 Jun, 2022 3 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull file descriptor fix from Al Viro: "Fix for breakage in #work.fd this window" * tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fix the breakage in close_fd_get_file() calling conventions change
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mmLinus Torvalds authored
Pull mm hotfixes from Andrew Morton: "Fixups for various recently-added and longer-term issues and a few minor tweaks: - fixes for material merged during this merge window - cc:stable fixes for more longstanding issues - minor mailmap and MAINTAINERS updates" * tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery x86/kexec: fix memory leak of elf header buffer mm/memremap: fix missing call to untrack_pfn() in pagemap_range() mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock() mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON MAINTAINERS: add maintainer information for z3fold mailmap: update Josh Poimboeuf's email
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- 05 Jun, 2022 17 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mmLinus Torvalds authored
Pull delay-accounting update from Andrew Morton: "A single featurette for delay accounting. Delayed a bit because, unusually, it had dependencies on both the mm-stable and mm-nonmm-stable queues" * tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: delayacct: track delays from write-protect copy
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Linus Torvalds authored
The bluetooth code uses our bitmap infrastructure for the two bits (!) of connection setup flags, and in the process causes odd problems when it converts between a bitmap and just the regular values of said bits. It's completely pointless to do things like bitmap_to_arr32() to convert a bitmap into a u32. It shoudln't have been a bitmap in the first place. The reason to use bitmaps is if you have arbitrary number of bits you want to manage (not two!), or if you rely on the atomicity guarantees of the bitmap setting and clearing. The code could use an "atomic_t" and use "atomic_or/andnot()" to set and clear the bit values, but considering that it then copies the bitmaps around with "bitmap_to_arr32()" and friends, there clearly cannot be a lot of atomicity requirements. So just use a regular integer. In the process, this avoids the warnings about erroneous use of bitmap_from_u64() which were triggered on 32-bit architectures when conversion from a u64 would access two words (and, surprise, surprise, only one word is needed - and indeed overkill - for a 2-bit bitmap). That was always problematic, but the compiler seems to notice it and warn about the invalid pattern only after commit 0a97953f ("lib: add bitmap_{from,to}_arr64") changed the exact implementation details of 'bitmap_from_u64()', as reported by Sudip Mukherjee and Stephen Rothwell. Fixes: fe92ee64 ("Bluetooth: hci_core: Rework hci_conn_params flags") Link: https://lore.kernel.org/all/YpyJ9qTNHJzz0FHY@debian/ Link: https://lore.kernel.org/all/20220606080631.0c3014f2@canb.auug.org.au/ Link: https://lore.kernel.org/all/20220605162537.1604762-1-yury.norov@gmail.com/Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> Reported-by:
Sudip Mukherjee <sudipm.mukherjee@gmail.com> Reviewed-by:
Yury Norov <yury.norov@gmail.com> Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Al Viro authored
It used to grab an extra reference to struct file rather than just transferring to caller the one it had removed from descriptor table. New variant doesn't, and callers need to be adjusted. Reported-and-tested-by: syzbot+47dd250f527cb7bebf24@syzkaller.appspotmail.com Fixes: 6319194e ("Unify the primitives for file descriptor closing") Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 SGX fix from Thomas Gleixner: "A single fix for x86/SGX to prevent that memory which is allocated for an SGX enclave is accounted to the wrong memory control group" * tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Set active memcg prior to shmem allocation
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 mm cleanup from Thomas Gleixner: "Use PAGE_ALIGNED() instead of open coding it in the x86/mm code" * tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm: Use PAGE_ALIGNED(x) instead of IS_ALIGNED(x, PAGE_SIZE)
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 microcode updates from Thomas Gleixner: - Disable late microcode loading by default. Unless the HW people get their act together and provide a required minimum version in the microcode header for making a halfways informed decision its just lottery and broken. - Warn and taint the kernel when microcode is loaded late - Remove the old unused microcode loader interface - Remove a redundant perf callback from the microcode loader * tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/microcode: Remove unnecessary perf callback x86/microcode: Taint and warn on late loading x86/microcode: Default-disable late loading x86/microcode: Rip out the OLD_INTERFACE
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 cleanups from Thomas Gleixner: "A set of small x86 cleanups: - Remove unused headers in the IDT code - Kconfig indendation and comment fixes - Fix all 'the the' typos in one go instead of waiting for bots to fix one at a time" * tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86: Fix all occurences of the "the the" typo x86/idt: Remove unused headers x86/Kconfig: Fix indentation of arch/x86/Kconfig.debug x86/Kconfig: Fix indentation and add endif comments to arch/x86/Kconfig -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 boot update from Thomas Gleixner: "Use strlcpy() instead of strscpy() in arch_setup()" * tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/setup: Use strscpy() to replace deprecated strlcpy()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull clockevent/clocksource updates from Thomas Gleixner: - Device tree bindings for MT8186 - Tell the kernel that the RISC-V SBI timer stops in deeper power states - Make device tree parsing in sp804 more robust - Dead code removal and tiny fixes here and there - Add the missing SPDX identifiers * tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value clocksource/drivers/timer-ti-dm: Remove unnecessary NULL check clocksource/drivers/timer-sun5i: Convert to SPDX identifier clocksource/drivers/timer-sun4i: Convert to SPDX identifier clocksource/drivers/pistachio: Convert to SPDX identifier clocksource/drivers/orion: Convert to SPDX identifier clocksource/drivers/lpc32xx: Convert to SPDX identifier clocksource/drivers/digicolor: Convert to SPDX identifier clocksource/drivers/armada-370-xp: Convert to SPDX identifier clocksource/drivers/mips-gic-timer: Convert to SPDX identifier clocksource/drivers/jcore: Convert to SPDX identifier clocksource/drivers/bcm_kona: Convert to SPDX identifier clocksource/drivers/sp804: Avoid error on multiple instances clocksource/drivers/riscv: Events are stopped during CPU suspend clocksource/drivers/ixp4xx: Drop boardfile probe path dt-bindings: timer: Add compatible for Mediatek MT8186
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fix from Thomas Gleixner: "Fix the fallout of sysctl code move which placed the init function wrong" * tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/autogroup: Fix sysctl move
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: - Make the ICL event constraints match reality - Remove a unused local variable * tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Remove unused local variable perf/x86/intel: Fix event constraints for ICL
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixlet from Thomas Gleixner: "Trivial indentation fix in Kconfig" * tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/Kconfig: Fix indentation in the Kconfig file
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull objtool fixes from Thomas Gleixner: - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as noreturn - Allow architectures to select uaccess validation - Use the non-instrumented bit test for test_cpu_has() to prevent escape from non-instrumentable regions - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape from non-instrumentable regions - Mark a few tiny inline as __always_inline to prevent GCC from bringing them out of line and instrumenting them - Mark the empty stub context_tracking_enabled() as always inline as GCC brings them out of line and instruments the empty shell - Annotate ex_handler_msr_mce() as dead end * tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/extable: Annotate ex_handler_msr_mce() as a dead end context_tracking: Always inline empty stubs x86: Always inline on_thread_stack() and current_top_of_stack() jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds x86/cpu: Elide KCSAN for cpu_has() and friends objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull more SCSI updates from James Bottomley: "Mostly small bug fixes plus other trivial updates. The major change of note is moving ufs out of scsi and a minor update to lpfc vmid handling" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits) scsi: qla2xxx: Remove unused 'ql_dm_tgt_ex_pct' parameter scsi: qla2xxx: Remove setting of 'req' and 'rsp' parameters scsi: mpi3mr: Fix kernel-doc scsi: lpfc: Add support for ATTO Fibre Channel devices scsi: core: Return BLK_STS_TRANSPORT for ALUA transitioning scsi: sd_zbc: Prevent zone information memory leak scsi: sd: Fix potential NULL pointer dereference scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings scsi: myrb: Fix up null pointer access on myrb_cleanup() scsi: core: Unexport scsi_bus_type scsi: sd: Don't call blk_cleanup_disk() in sd_probe() scsi: ufs: ufshcd: Delete unnecessary NULL check scsi: isci: Fix typo in comment scsi: pmcraid: Fix typo in comment scsi: smartpqi: Fix typo in comment scsi: qedf: Fix typo in comment scsi: esas2r: Fix typo in comment scsi: storvsc: Fix typo in comment scsi: ufs: Split the drivers/scsi/ufs directory scsi: qla1280: Remove redundant variable ...
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linuxLinus Torvalds authored
Pull hardware timestamping subsystem from Thierry Reding: "This contains the new HTE (hardware timestamping engine) subsystem that has been in the works for a couple of months now. The infrastructure provided allows for drivers to register as hardware timestamp providers, while consumers will be able to request events that they are interested in (such as GPIOs and IRQs) to be timestamped by the hardware providers. Note that this currently supports only one provider, but there seems to be enough interest in this functionality and we expect to see more drivers added once this is merged" [ Linus Walleij mentions the Intel PMC in the Elkhart and Tiger Lake platforms as another future timestamp provider ] * tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: dt-bindings: timestamp: Correct id path dt-bindings: Renamed hte directory to timestamp hte: Uninitialized variable in hte_ts_get() hte: Fix off by one in hte_push_ts_ns() hte: Fix possible use-after-free in tegra_hte_test_remove() hte: Remove unused including <linux/version.h> MAINTAINERS: Add HTE Subsystem hte: Add Tegra HTE test driver tools: gpio: Add new hardware clock type gpiolib: cdev: Add hardware timestamp clock type gpio: tegra186: Add HTE support gpiolib: Add HTE support dt-bindings: Add HTE bindings hte: Add Tegra194 HTE kernel provider drivers: Add hardware timestamp engine (HTE) subsystem Documentation: Add HTE subsystem guide
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuildLinus Torvalds authored
Pull more Kbuild updates from Masahiro Yamada: - Fix build regressions for parisc, csky, nios2, openrisc - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT - Remove arch/parisc/nm, which was presumably a workaround for old tools - Check the odd combination of EXPORT_SYMBOL and 'static' precisely - Make external module builds robust against "too long argument error" - Support j, k keys for moving the cursor in nconfig * tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits) kbuild: Allow to select bash in a modified environment scripts: kconfig: nconf: make nconfig accept jk keybindings modpost: use fnmatch() to simplify match() modpost: simplify mod->name allocation kbuild: factor out the common objtool arguments kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o kbuild: clean .tmp_* pattern by make clean kbuild: remove redundant cleanups in scripts/link-vmlinux.sh kbuild: rebuild multi-object modules when objtool is updated kbuild: add cmd_and_savecmd macro kbuild: make *.mod rule robust against too long argument error kbuild: make built-in.a rule robust against too long argument error kbuild: check static EXPORT_SYMBOL* by script instead of modpost parisc: remove arch/parisc/nm kbuild: do not create *.prelink.o for Clang LTO or IBT kbuild: replace $(linked-object) with CONFIG options kbuild: do not try to parse *.cmd files for objects provided by compiler kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost modpost: squash if...else-if in find_elf_symbol2() modpost: reuse ARRAY_SIZE() macro for section_mismatch() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull vfs pathname updates from Al Viro: "Several cleanups in fs/namei.c" * tag 'pull-18-rc1-work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: namei: cleanup double word in comment get rid of dead code in legitimize_root() fs/namei.c:reserve_stack(): tidy up the call of try_to_unlazy()
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