Merge tag 'loongarch-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - Use EXPLICIT_RELOCS (ABIv2.0)

 - Use generic BUG() handler

 - Refactor TLB/Cache operations

 - Add qspinlock support

 - Add perf events support

 - Add kexec/kdump support

 - Add BPF JIT support

 - Add ACPI-based laptop driver

 - Update the default config file

* tag 'loongarch-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
  LoongArch: Update Loongson-3 default config file
  LoongArch: Add ACPI-based generic laptop driver
  LoongArch: Add BPF JIT support
  LoongArch: Add some instruction opcodes and formats
  LoongArch: Move {signed,unsigned}_imm_check() to inst.h
  LoongArch: Add kdump support
  LoongArch: Add kexec support
  LoongArch: Use generic BUG() handler
  LoongArch: Add SysRq-x (TLB Dump) support
  LoongArch: Add perf events support
  LoongArch: Add qspinlock support
  LoongArch: Use TLB for ioremap()
  LoongArch: Support access filter to /dev/mem interface
  LoongArch: Refactor cache probe and flush methods
  LoongArch: mm: Refactor TLB exception handlers
  LoongArch: Support R_LARCH_GOT_PC_{LO12,HI20} in modules
  LoongArch: Support PC-relative relocations in modules
  LoongArch: Define ELF relocation types added in ABIv2.0
  LoongArch: Adjust symbol addressing for AS_HAS_EXPLICIT_RELOCS
  LoongArch: Add Kconfig option AS_HAS_EXPLICIT_RELOCS
  ...

Pull interrupt updates from Thomas Gleixner:
 "Core code:

   - Provide a generic wrapper which can be utilized in drivers to
     handle the problem of force threaded demultiplex interrupts on RT
     enabled kernels. This avoids conditionals and horrible quirks in
     drivers all over the place

   - Fix up affected pinctrl and GPIO drivers to make them cleanly RT
     safe

  Interrupt drivers:

   - A new driver for the FSL MU platform specific MSI implementation

   - Make irqchip_init() available for pure ACPI based systems

   - Provide a functional DT binding for the Realtek RTL interrupt chip

   - The usual DT updates and small code improvements all over the
     place"

* tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  irqchip: IMX_MU_MSI should depend on ARCH_MXC
  irqchip/imx-mu-msi: Fix wrong register offset for 8ulp
  irqchip/ls-extirq: Fix invalid wait context by avoiding to use regmap
  dt-bindings: irqchip: Describe the IMX MU block as a MSI controller
  irqchip: Add IMX MU MSI controller driver
  dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
  irqchip/gic-v3: Fix typo in comment
  dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
  dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
  irqchip: Allow extra fields to be passed to IRQCHIP_PLATFORM_DRIVER_END
  platform-msi: Export symbol platform_msi_create_irq_domain()
  irqchip/realtek-rtl: use parent interrupts
  dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
  irqchip/realtek-rtl: use irq_domain_add_linear()
  irqchip: Make irqchip_init() usable on pure ACPI systems
  bcma: gpio: Use generic_handle_irq_safe()
  gpio: mlxbf2: Use generic_handle_irq_safe()
  platform/x86: intel_int0002_vgpio: Use generic_handle_irq_safe()
  ssb: gpio: Use generic_handle_irq_safe()
  pinctrl: amd: Use generic_handle_irq_safe()
  ...

1, Enable ZBOOT, KEXEC and BPF_JIT;
2, Add more patition types;
3, Add some USB Type-C options;
4, Add some common network options;
5, Add some Bluetooth device drivers;
6, Remove obsolete config options (for some detailed information, see
   Link).

Link: https://lore.kernel.org/kernel-janitors/20220929090645.1389-1-lukas.bulwahn@gmail.com/Co-developed-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Co-developed-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

This add ACPI-based generic laptop driver for Loongson-3. Some of the
codes are derived from drivers/platform/x86/thinkpad_acpi.c.
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

BPF programs are normally handled by a BPF interpreter, add BPF JIT
support for LoongArch to allow the kernel to generate native code when
a program is loaded into the kernel. This will significantly speed-up
processing of BPF programs.
Co-developed-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

According to the "Table of Instruction Encoding" in LoongArch Reference
Manual [1], add some instruction opcodes and formats which are used in
the BPF JIT for LoongArch.

[1] https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html#table-of-instruction-encodingSigned-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

{signed,unsigned}_imm_check() will also be used in the bpf jit, so move
them from module.c to inst.h, this is preparation for later patches.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

This patch adds support for kdump. In kdump case the normal kernel will
reserve a region for the crash kernel and jump there on panic.

Arch-specific functions are added to allow for implementing a crash dump
file interface, /proc/vmcore, which can be viewed as a ELF file.

A user-space tool, such as kexec-tools, is responsible for allocating a
separate region for the core's ELF header within the crash kdump kernel
memory and filling it in when executing kexec_load().

Then, its location will be advertised to the crash dump kernel via a
command line argument "elfcorehdr=", and the crash dump kernel will
preserve this region for later use with arch_reserve_vmcore() at boot
time.

At the same time, the crash kdump kernel is also limited within the
"crashkernel" area via a command line argument "mem=", so as not to
destroy the original kernel dump data.

In the crash dump kernel environment, /proc/vmcore is used to access the
primary kernel's memory with copy_oldmem_page().

I tested kdump on LoongArch machines (Loongson-3A5000) and it works as
expected (suggested crashkernel parameter is "crashkernel=512M@2560M"),
you may test it by triggering a crash through /proc/sysrq-trigger:

 $ sudo kexec -p /boot/vmlinux-kdump --reuse-cmdline --append="nr_cpus=1"
 # echo c > /proc/sysrq-trigger
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Add three new files, kexec.h, machine_kexec.c and relocate_kernel.S to
the LoongArch architecture, so as to add support for the kexec re-boot
mechanism (CONFIG_KEXEC) on LoongArch platforms.

Kexec supports loading vmlinux.elf in ELF format and vmlinux.efi in PE
format.

I tested kexec on LoongArch machines (Loongson-3A5000) and it works as
expected:

 $ sudo kexec -l /boot/vmlinux.efi --reuse-cmdline
 $ sudo kexec -e
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Inspired by commit 9fb7410f("arm64/BUG: Use BRK instruction for
generic BUG traps"), do similar for LoongArch to use generic BUG()
handler.

This patch uses the BREAK software breakpoint instruction to generate
a trap instead, similarly to most other arches, with the generic BUG
code generating the dmesg boilerplate.

This allows bug metadata to be moved to a separate table and reduces
the amount of inline code at BUG() and WARN() sites. This also avoids
clobbering any registers before they can be dumped.

To mitigate the size of the bug table further, this patch makes use of
the existing infrastructure for encoding addresses within the bug table
as 32-bit relative pointers instead of absolute pointers.

(Note: this limits the max kernel size to 2GB.)

Before patch:
[ 3018.338013] lkdtm: Performing direct entry BUG
[ 3018.342445] Kernel bug detected[#5]:
[ 3018.345992] CPU: 2 PID: 865 Comm: cat Tainted: G D 6.0.0-rc6+ #35

After patch:
[  125.585985] lkdtm: Performing direct entry BUG
[  125.590433] ------------[ cut here ]------------
[  125.595020] kernel BUG at drivers/misc/lkdtm/bugs.c:78!
[  125.600211] Oops - BUG[#1]:
[  125.602980] CPU: 3 PID: 410 Comm: cat Not tainted 6.0.0-rc6+ #36

Out-of-line file/line data information obtained compared to before.
Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Add SysRq-x (TLB Dump) support for LoongArch, which is useful for
debugging.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

The perf events infrastructure of LoongArch is very similar to old MIPS-
based Loongson, so most of the codes are derived from MIPS.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

On NUMA system, the performance of qspinlock is better than generic
spinlock. Below is the UnixBench test results on a 8 nodes (4 cores
per node, 32 cores in total) machine.

A. With generic spinlock:

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0  449574022.5  38523.9
Double-Precision Whetstone                       55.0      85190.4  15489.2
Execl Throughput                                 43.0      14696.2   3417.7
File Copy 1024 bufsize 2000 maxblocks          3960.0     143157.8    361.5
File Copy 256 bufsize 500 maxblocks            1655.0      37631.8    227.4
File Copy 4096 bufsize 8000 maxblocks          5800.0     444814.2    766.9
Pipe Throughput                               12440.0    5047490.7   4057.5
Pipe-based Context Switching                   4000.0    2021545.7   5053.9
Process Creation                                126.0      23829.8   1891.3
Shell Scripts (1 concurrent)                     42.4      33756.7   7961.5
Shell Scripts (8 concurrent)                      6.0       4062.9   6771.5
System Call Overhead                          15000.0    2479748.6   1653.2
                                                                   ========
System Benchmarks Index Score                                        2955.6

B. With qspinlock:

System Benchmarks Index Values               BASELINE       RESULT    INDEX
Dhrystone 2 using register variables         116700.0  449467876.9  38514.8
Double-Precision Whetstone                       55.0      85174.6  15486.3
Execl Throughput                                 43.0      14769.1   3434.7
File Copy 1024 bufsize 2000 maxblocks          3960.0     146150.5    369.1
File Copy 256 bufsize 500 maxblocks            1655.0      37496.8    226.6
File Copy 4096 bufsize 8000 maxblocks          5800.0     447527.0    771.6
Pipe Throughput                               12440.0    5175989.2   4160.8
Pipe-based Context Switching                   4000.0    2207747.8   5519.4
Process Creation                                126.0      25125.5   1994.1
Shell Scripts (1 concurrent)                     42.4      33461.2   7891.8
Shell Scripts (8 concurrent)                      6.0       4024.7   6707.8
System Call Overhead                          15000.0    2917278.6   1944.9
                                                                   ========
System Benchmarks Index Score                                        3040.1
Signed-off-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

We can support more cache attributes (e.g., CC, SUC and WUC) and page
protection when we use TLB for ioremap(). The implementation is based
on GENERIC_IOREMAP.

The existing simple ioremap() implementation has better performance so
we keep it and introduce ARCH_IOREMAP to control the selection.

We move pagetable_init() earlier to make early ioremap() works, and we
modify the PCI ecam mapping because the TLB-based version of ioremap()
will actually take the size into account.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Accidental access to /dev/mem is obviously disastrous, but specific
access can be used by people debugging the kernel. So select GENERIC_
LIB_DEVMEM_IS_ALLOWED, as well as define ARCH_HAS_VALID_PHYS_ADDR_RANGE
and related helpers, to support access filter to /dev/mem interface.
Signed-off-by: Weihao Li <liweihao@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Current cache probe and flush methods have some drawbacks:
1, Assume there are 3 cache levels and only 3 levels;
2, Assume L1 = I + D, L2 = V, L3 = S, V is exclusive, S is inclusive.

However, the fact is I + D, I + D + V, I + D + S and I + D + V + S are
all valid. So, refactor the cache probe and flush methods to adapt more
types of cache hierarchy.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

This patch simplifies TLB load, store and modify exception handlers:

1. Reduce instructions, such as alu/csr and memory access;
2. Execute tlb search instruction only in the fast path;
3. Return directly from the fast path for both normal and huge pages;
4. Re-tab the assembly for better vertical alignment.

And fixes the concurrent modification issue of fast path for huge pages.

This issue will occur in the following steps:

   CPU-1 (In TLB exception)         CPU-2 (In THP splitting)
1: Load PMD entry (HUGE=1)
2: Goto huge path
3:                                  Store PMD entry (HUGE=0)
4: Reload PMD entry (HUGE=0)
5: Fill TLB entry (PA is incorrect)

This patch also slightly improves the TLB processing performance:

* Normal pages: 2.15%, Huge pages: 1.70%.

  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <sys/mman.h>

  int main(int argc, char *argv[])
  {
        size_t page_size;
        size_t mem_size;
        size_t off;
        void *base;
        int flags;
        int i;

        if (argc < 2) {
                fprintf(stderr, "%s MEM_SIZE [HUGE]\n", argv[0]);
                return -1;
        }

        page_size = sysconf(_SC_PAGESIZE);
        flags = MAP_PRIVATE | MAP_ANONYMOUS;
        mem_size = strtoul(argv[1], NULL, 10);
        if (argc > 2)
                flags |= MAP_HUGETLB;

        for (i = 0; i < 10; i++) {
                base = mmap(NULL, mem_size, PROT_READ, flags, -1, 0);
                if (base == MAP_FAILED) {
                        fprintf(stderr, "Map memory failed!\n");
                        return -1;
                }

                for (off = 0; off < mem_size; off += page_size)
                        *(volatile int *)(base + off);

                munmap(base, mem_size);
        }

        return 0;
  }
Signed-off-by: Rui Wang <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

GCC >= 13 and GNU assembler >= 2.40 use these relocations to address
external symbols, so we need to add them.

Let the module loader emit GOT entries for data symbols so we would be
able to handle GOT relocations. The GOT entry is just the data's symbol
address.

In module.lds, emit a stub .got section for a section header entry. The
actual content of the section entry will be filled at runtime by module_
frob_arch_sections().
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Binutils >= 2.40 uses R_LARCH_B26 instead of R_LARCH_SOP_PUSH_PLT_PCREL,
and R_LARCH_PCALA* instead of R_LARCH_SOP_PUSH_PCREL.

Handle R_LARCH_B26 and R_LARCH_PCALA* in the module loader. For R_LARCH_
B26, also create a PLT entry as needed.
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

These relocation types are used by GNU binutils >= 2.40 and GCC >= 13.
Add their definitions so we will be able to use them in later patches.

Link: https://github.com/loongson/LoongArch-Documentation/pull/57Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

If explicit relocation hints are used by the toolchain, -Wa,-mla-*
options will be useless for the C code. So only use them for the
!CONFIG_AS_HAS_EXPLICIT_RELOCS case.

Replace "la" with "la.pcrel" in head.S to keep the semantic consistent
with new and old toolchains for the low level startup code.

For per-CPU variables, the "address" of the symbol is actually an offset
from $r21. The value is near the loading address of main kernel image,
but far from the loading address of modules. So we use model("extreme")
attibute to tell the compiler that a PC-relative addressing with 32-bit
offset is not sufficient for local per-CPU variables.

The behavior with different assemblers and compilers are summarized in
the following table:

AS has            CC has
explicit relocs   explicit relocs * Behavior
==============================================================
No                No                Use la.* macros.
                                    No change from Linux 6.0.
--------------------------------------------------------------
No                Yes               Disable explicit relocs.
                                    No change from Linux 6.0.
--------------------------------------------------------------
Yes               No                Not supported.
--------------------------------------------------------------
Yes               Yes               Enable explicit relocs.
                                    No -Wa,-mla* options used.
==============================================================
*: We assume CC must have model attribute if it has explicit relocs.
   Both features are added in GCC 13 development cycle, so any GCC
   release >= 13 should be OK. Using early GCC 13 development snapshots
   may produce modules with unsupported relocations.

Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=f09482a
Link: https://gcc.gnu.org/r13-1834
Link: https://gcc.gnu.org/r13-2199Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

GNU as >= 2.40 and GCC >= 13 will support using explicit relocation
hints in the assembly code, instead of la.* macros. The usage of
explicit relocation hints can improve code generation so it's enabled
by default by GCC >= 13.

Introduce a Kconfig option AS_HAS_EXPLICIT_RELOCS as the switch for
"use explicit relocation hints or not".
Tested-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

There is a spelling mistake in a commented section. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Commit ac7c3e4f ("compiler: enable CONFIG_OPTIMIZE_INLINING
forcibly") allows compiler to uninline functions marked as 'inline'.
In case of __xchg()/__cmpxchg() this would cause to reference
BUILD_BUG(), which is an error case for catching bugs and will not
happen for correct code, if __xchg()/__cmpxchg() is inlined.

This bug can be produced with CONFIG_DEBUG_SECTION_MISMATCH enabled,
and the solution is similar to below commits:
46f16195 ("MIPS: include: Mark __xchg as __always_inline"),
88356d09 ("MIPS: include: Mark __cmpxchg as __always_inline").
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Move local_flush_tlb_all() earlier (just after setup_ptwalker() and
before page allocation). This can avoid stale TLB entries misguiding
the later page allocation. Without this patch the second kernel of
kexec/kdump fails to boot SMP.

BTW, move output_pgtable_bits_defines() into tlb_init() since it has
nothing to do with tlb handler setup.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Now io master CPUs are not hotpluggable on LoongArch, but in the current
code only /sys/devices/system/cpu/cpu0/online is not created. Let us set
the hotpluggable field of all the io master CPUs as 0, then prevent to
create sysfs control file for all the io master CPUs which confuses some
user space tools. This is similar with commit 9cce844a ("MIPS: CPU#0
is not hotpluggable").
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Don't overwrite the SMBIOS-provided CPU name on coming back from CPU-
hotplug (including S3/S4) if it is already initialized.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

Merge tag 'irqchip-fixes-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/core

Pull irqchip fixes from Marc Zyngier:

  - Fix IMX-MU Kconfig, keeping it private to IMX

  - Fix a register offset for the same IMX-MU driver

  - Fix the ls-extirq irqchip driver that would use the wrong
    flavour of spinlocks

Link: https://lore.kernel.org/r/20221012075125.1244143-1-maz@kernel.org

The Freescale/NXP i.MX Messaging Unit is only present on Freescale/NXP
i.MX SoCs.  Hence add a dependency on ARCH_MXC, to prevent asking the
user about this driver when configuring a kernel without Freescale/NXP
i.MX SoC family support.

While at it, expand "MU" to "Messaging Unit" in the help text.

Fixes: 70afdab9 ("irqchip: Add IMX MU MSI controller driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/7f3bd932614ddbff46a1b750ef45b231130364ad.1664900434.git.geert+renesas@glider.be

Pull memblock updates from Mike Rapoport:
 "Test suite improvements:

   - Added verification that memblock allocations zero the allocated
     memory

   - Added more test cases for memblock_add(), memblock_remove(),
     memblock_reserve() and memblock_free()

   - Added tests for memblock_*_raw() family

   - Added tests for NUMA-aware allocations in memblock_alloc_try_nid()
     and memblock_alloc_try_nid_raw()"

* tag 'memblock-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock tests: add generic NUMA tests for memblock_alloc_try_nid*
  memblock tests: add bottom-up NUMA tests for memblock_alloc_try_nid*
  memblock tests: add top-down NUMA tests for memblock_alloc_try_nid*
  memblock tests: add simulation of physical memory with multiple NUMA nodes
  memblock_tests: move variable declarations to single block
  memblock tests: remove 'cleared' from comment blocks
  memblock tests: add tests for memblock_trim_memory
  memblock tests: add tests for memblock_*bottom_up functions
  memblock tests: update alloc_nid_api to test memblock_alloc_try_nid_raw
  memblock tests: update alloc_api to test memblock_alloc_raw
  memblock tests: add additional tests for basic api and memblock_alloc
  memblock tests: add labels to verbose output for generic alloc tests
  memblock tests: update zeroed memory check for memblock_alloc_* tests
  memblock tests: update tests to check if memblock_alloc zeroed memory
  memblock tests: update reference to obsolete build option in comments
  memblock tests: add command line help option

Pull more kvm updates from Paolo Bonzini:
 "The main batch of ARM + RISC-V changes, and a few fixes and cleanups
  for x86 (PMU virtualization and selftests).

  ARM:

   - Fixes for single-stepping in the presence of an async exception as
     well as the preservation of PSTATE.SS

   - Better handling of AArch32 ID registers on AArch64-only systems

   - Fixes for the dirty-ring API, allowing it to work on architectures
     with relaxed memory ordering

   - Advertise the new kvmarm mailing list

   - Various minor cleanups and spelling fixes

  RISC-V:

   - Improved instruction encoding infrastructure for instructions not
     yet supported by binutils

   - Svinval support for both KVM Host and KVM Guest

   - Zihintpause support for KVM Guest

   - Zicbom support for KVM Guest

   - Record number of signal exits as a VCPU stat

   - Use generic guest entry infrastructure

  x86:

   - Misc PMU fixes and cleanups.

   - selftests: fixes for Hyper-V hypercall

   - selftests: fix nx_huge_pages_test on TDP-disabled hosts

   - selftests: cleanups for fix_hypercall_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (57 commits)
  riscv: select HAVE_POSIX_CPU_TIMERS_TASK_WORK
  RISC-V: KVM: Use generic guest entry infrastructure
  RISC-V: KVM: Record number of signal exits as a vCPU stat
  RISC-V: KVM: add __init annotation to riscv_kvm_init()
  RISC-V: KVM: Expose Zicbom to the guest
  RISC-V: KVM: Provide UAPI for Zicbom block size
  RISC-V: KVM: Make ISA ext mappings explicit
  RISC-V: KVM: Allow Guest use Zihintpause extension
  RISC-V: KVM: Allow Guest use Svinval extension
  RISC-V: KVM: Use Svinval for local TLB maintenance when available
  RISC-V: Probe Svinval extension form ISA string
  RISC-V: KVM: Change the SBI specification version to v1.0
  riscv: KVM: Apply insn-def to hlv encodings
  riscv: KVM: Apply insn-def to hfence encodings
  riscv: Introduce support for defining instructions
  riscv: Add X register names to gpr-nums
  KVM: arm64: Advertise new kvmarm mailing list
  kvm: vmx: keep constant definition format consistent
  kvm: mmu: fix typos in struct kvm_arch
  KVM: selftests: Fix nx_huge_pages_test on TDP-disabled hosts
  ...

Merge tag 'perf-tools-for-v6.1-1-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tools updates from Arnaldo Carvalho de Melo:

 - Add support for AMD on 'perf mem' and 'perf c2c', the kernel
   enablement patches went via tip.

   Example:

      $ sudo perf mem record -- -c 10000
      ^C[ perf record: Woken up 227 times to write data ]
      [ perf record: Captured and wrote 58.760 MB perf.data (836978 samples) ]

      $ sudo perf mem report -F mem,sample,snoop
      Samples: 836K of event 'ibs_op//', Event count (approx.): 8418762
      Memory access                  Samples  Snoop
      N/A                             700620  N/A
      L1 hit                          126675  N/A
      L2 hit                             424  N/A
      L3 hit                             664  HitM
      L3 hit                              10  N/A
      Local RAM hit                        2  N/A
      Remote RAM (1 hop) hit            8558  N/A
      Remote Cache (1 hop) hit             3  N/A
      Remote Cache (1 hop) hit             2  HitM
      Remote Cache (2 hops) hit           10  HitM
      Remote Cache (2 hops) hit            6  N/A
      Uncached hit                         4  N/A
      $

 - "perf lock" improvements:

     - Add -E/--entries option to limit the number of entries to
       display, say to ask for just the top 5 contended locks.

     - Add -q/--quiet option to suppress header and debug messages.

     - Add a 'perf test' kernel lock contention entry to test 'perf
       lock'.

 - "perf lock contention" improvements:

     - Ask BPF's bpf_get_stackid() to skip some callchain entries.

       The ones closer to the tooling are bpf related and not that
       interesting, the ones calling the locking function are the ones
       we're interested in, example of a full, unskipped callstack:

     - Allow changing the callstack depth and number of entries to skip.

           1     10.74 us     10.74 us     10.74 us     spinlock   __bpf_trace_contention_begin+0xb
                          0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                          0xffffffffc03b5c47  bpf_prog_bf07ae9e2cbd02c5_contention_begin+0x117
                          0xffffffffbb8b8e75  bpf_trace_run2+0x35
                          0xffffffffbb7eab9b  __bpf_trace_contention_begin+0xb
                          0xffffffffbb7ebe75  queued_spin_lock_slowpath+0x1f5
                          0xffffffffbc1c26ff  _raw_spin_lock+0x1f
                          0xffffffffbb841015  tick_do_update_jiffies64+0x25
                          0xffffffffbb8409ee  tick_irq_enter+0x9e

     - Show full callstack in verbose mode (-v option), sometimes this
       is desirable instead of showing just one callstack entry.

 - Allow multiple time ranges in 'perf record --delay' to help in
   reducing the amount of data collected from hardware tracing (Intel
   PT, etc) when there is a rough idea of periods of time where events
   of interest take time.

 - Add Intel PT to record only decoder debug messages when error
   happens.

 - Improve layout of Intel PT man page.

 - Add new branch types: alignment, data and inst faults and arch
   specific ones, such as fiq, debug_halt, debug_exit, debug_inst and
   debug_data on arm64.

   Kernel enablement went thru the tip tree.

 - Fix 'perf probe' error log check in 'perf test' when no debuginfo is
   available.

 - Fix 'perf stat' aggregation mode logic, it should be looking at the
   CPU not at the core number.

 - Fix flags parsing in 'perf trace' filters.

 - Introduce compact encoding of CPU range encoding on perf.data, to
   avoid having a bitmap with all the CPUs.

 - Improvements to the 'perf stat' metrics, including adding
   "core_wide", and computing "smt" from the CPU topology.

 - Add support to the new PERF_FORMAT_LOST perf_event_attr.read_format,
   that allows tooling to ask for the precise number of lost samples for
   a given event.

 - Add 'addr' sort key to see just the address of sampled instructions:

      $ perf record -o- true | perf report -i- -s addr
      [ perf record: Woken up 1 times to write data ]
      [ perf record: Captured and wrote 0.000 MB - ]
      # Samples: 12  of event 'cycles:u'
      # Event count (approx.): 252512
      #
      # Overhead  Address
      # ........  ..................
          42.96%  0x7f96f08443d7
          29.55%  0x7f96f0859b50
          14.76%  0x7f96f0852e02
           8.30%  0x7f96f0855028
           4.43%  0xffffffff8de01087

      perf annotate: Toggle full address <-> offset display

 - Add 'f' hotkey to the 'perf annotate' TUI interface when in
   'disassembler output' mode ('o' hotkey) to toggle showing full
   virtual address or just the offset.

 - Cache DSO build-ids when synthesizing PERF_RECORD_MMAP records for
   pre-existing threads, at the start of a 'perf record' session,
   speeding up that record startup phase.

 - Add a command line option to specify build ids in 'perf inject'.

 - Update JSON event files for the Intel alderlake, broadwell,
   broadwellde, broadwellx, cascadelakex, haswell, haswellx, icelake,
   icelakex, ivybridge, ivytown, jaketown, sandybridge, sapphirerapids,
   skylake, skylakex, and tigerlake processors.

 - Update vendor JSON event files for the ARM Neoverse V1 and E1
   platforms.

 - Add a 'perf test' entry for 'perf mem' where a struct has false
   sharing and this gets detected in the 'perf mem' output, tested with
   Intel, AMD and ARM64 systems.

 - Add a 'perf test' entry to test the resolution of java symbols, where
   an output like this is expected:

       8.18%  jshell    jitted-50116-29.so    [.] Interpreter
       0.75%  Thread-1  jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)

 - Add tests for the ARM64 CoreSight hardware tracing feature, with
   specially crafted pureloop, memcpy, thread loop and unroll tread that
   then gets traced and the output compared with expected output.

   Documentation explaining it is also included.

 - Add per thread Intel PT 'perf test' entry to check that
   PERF_RECORD_TEXT_POKE events are recorded per CPU, resulting in a
   mixture of per thread and per CPU events and mmaps, verify that this
   gets all recorded correctly.

 - Introduce pthread mutex wrappers to allow for building with clang's
   -Wthread-safety, i.e. using the "guarded_by" "pt_guarded_by"
   "lockable", "exclusive_lock_function", "exclusive_trylock_function",
   "exclusive_locks_required", and "no_thread_safety_analysis" compiler
   function attributes.

 - Fix empty version number when building outside of a git repo.

 - Improve feature detection display when multiple versions of a feature
   are present, such as for binutils libbfd, that has a mix of possible
   ways to detect according to the Linux distribution.

   Previously in some cases we had:

      Auto-detecting system features
      <SNIP>
      ...                                  libbfd: [ on  ]
      ...                          libbfd-liberty: [ on  ]
      ...                        libbfd-liberty-z: [ on  ]
      <SNIP>

   Now for this case we show just the main feature:

      Auto-detecting system features
      <SNIP>
      ...                                  libbfd: [ on  ]
      <SNIP>

 - Remove some unused structs, variables, macros, function prototypes
   and includes from various places.

* tag 'perf-tools-for-v6.1-1-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (169 commits)
  perf script: Add missing fields in usage hint
  perf mem: Print "LFB/MAB" for PERF_MEM_LVLNUM_LFB
  perf mem/c2c: Avoid printing empty lines for unsupported events
  perf mem/c2c: Add load store event mappings for AMD
  perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events
  perf mem: Add support for printing PERF_MEM_LVLNUM_{CXL|IO}
  perf amd ibs: Sync arch/x86/include/asm/amd-ibs.h header with the kernel
  tools headers UAPI: Sync include/uapi/linux/perf_event.h header with the kernel
  perf stat: Fix cpu check to use id.cpu.cpu in aggr_printout()
  perf test coresight: Add relevant documentation about ARM64 CoreSight testing
  perf test: Add git ignore for tmp and output files of ARM CoreSight tests
  perf test coresight: Add unroll thread test shell script
  perf test coresight: Add unroll thread test tool
  perf test coresight: Add thread loop test shell scripts
  perf test coresight: Add thread loop test tool
  perf test coresight: Add memcpy thread test shell script
  perf test coresight: Add memcpy thread test tool
  perf test: Add git ignore for perf data generated by the ARM CoreSight tests
  perf test: Add arm64 asm pureloop test shell script
  perf test: Add asm pureloop test tool
  ...

Pull pci updates from Bjorn Helgaas:
 "Resource management:

   - Distribute spare resources to unconfigured hotplug bridges at
     boot-time (not just when hot-adding such a bridge), which makes
     hot-adding devices to docks work better.

   - Revert to a BAR assignment inherited from firmware only when the
     address is actually reachable via any upstream bridges, which fixes
     some cases where firmware doesn't configure all devices.

   - Add a sysfs interface to resize BARs so this can be done before
     assigning devices to a VM through VFIO.

  Power management:

   - Disable Precision Time Management for all devices on suspend to
     enable lower-power PM state. We previously did this just for Root
     Ports, which isn't enough because downstream devices can still
     generate PTM messages, which cause errors if it's disabled in the
     Root Port.

   - Save and restore the ASPM L1 PM Substates configuration for
     suspend/ resume. Previously this configuration was lost, so L1.x
     states likely stopped working after resume.

   - Check whether the L1 PM Substates Capability exists. If it didn't
     exist, we previously read junk and tried to configure L1 Substates
     based on that.

   - Fix the LTR_L1.2_THRESHOLD computation, which previously set a
     threshold for entering L1.2 that was too low in some cases.

   - Reduce the delay after transitions to or from D3cold by using
     usleep_range() rather than msleep(), which often slept for ~19ms
     instead of the 10ms normally required. The spec says 10ms is
     enough, but it's possible we could trip over devices that need a
     little more.

  Error handling:

   - Work around a BIOS bug that caused Intel Root Ports to advertise a
     Root Port Programmed I/O (RP PIO) log size of zero, which caused
     annoying warnings and prevented the kernel from dumping log
     registers for DPC errors.

  Qualcomm PCIe controller driver:

   - Add support for SC8280XP and SA8540P host controllers and SM8450
     endpoint controller.

   - Disable Master AXI clock on endpoint controllers to save power when
     link is idle or in L1.x.

   - Expose link state transition counts via debugfs to help debug
     issues with low-power states.

   - Add auto-loading module support.

  Synopsys DesignWare PCIe controller driver:

   - Remove a dependency on ZONE_DMA32 by allocating the MSI target page
     differently. There's more work to do related to eDMA controllers,
     so it's not completely settled"

* tag 'pci-v6.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (71 commits)
  PCI: qcom-ep: Check platform_get_resource_byname() return value
  PCI: qcom-ep: Add support for SM8450 SoC
  dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC
  dt-bindings: PCI: qcom-ep: Define clocks per platform
  PCI: qcom-ep: Make PERST separation optional
  dt-bindings: PCI: qcom-ep: Make PERST separation optional
  PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic
  PCI: Expose PCIe Resizable BAR support via sysfs
  PCI/ASPM: Correct LTR_L1.2_THRESHOLD computation
  PCI/ASPM: Ignore L1 PM Substates if device lacks capability
  PCI/ASPM: Factor out L1 PM Substates configuration
  PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS
  PCI: qcom-ep: Expose link transition counts via debugfs
  PCI: qcom-ep: Disable IRQs during driver remove
  PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
  PCI/ASPM: Refactor L1 PM Substates Control Register programming
  PCI: qcom-ep: Make use of the cached dev pointer
  PCI: qcom-ep: Rely on the clocks supplied by devicetree
  PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure
  phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on()
  ...

Pull more i2c updates from Wolfram Sang:

 - correct a variable type in the new pci1xxxx driver

 - add a new SoC to the qcom-cci driver

 - fix an issue with the designware driver which now got enough testing

 - the aspeed driver now handles busy target backends better

* tag 'i2c-for-6.1-rc1-batch2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: aspeed: Assert NAK when slave is busy
  i2c: designware: Fix handling of real but unexpected device interrupts
  i2c: qcom-cci: Add MSM8226 compatible
  dt-bindings: i2c: qcom,i2c-cci: Document clocks for MSM8974
  dt-bindings: i2c: qcom,i2c-cci: Document MSM8226 compatible
  i2c: microchip: pci1xxxx: Fix comparison of -EPERM against an unsigned variable

Pull pin control updates from Linus Walleij:
 "There is nothing exciting going on, no core changes, just a few
  drivers and cleanups.

  New drivers:

   - Cypress CY8C95x0 chip pin control support, along with an immediate
     cleanup

   - Mediatek MT8188 SoC pin control support

   - Qualcomm SM8450 and SC8280XP LPASS (low power audio subsystem) pin
     control support

   - Qualcomm PM7250, PM8450

   - Rockchip RV1126 SoC pin control support

  Improvements:

   - Fix some missing pins in the Armada 37xx driver

   - Convert Broadcom and Nomadik drivers to use PINCTRL_PINGROUP()
     macro

   - Fix some GPIO irq_chips to be immutable

   - Massive Qualcomm device tree binding cleanup, with more to come"

* tag 'pinctrl-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (119 commits)
  MAINTAINERS: adjust STARFIVE JH7100 PINCTRL DRIVER after file movement
  pinctrl: starfive: Rename "pinctrl-starfive" to "pinctrl-starfive-jh7100"
  pinctrl: Create subdirectory for StarFive drivers
  dt-bindings: pinctrl: st,stm32: Document interrupt-controller property
  dt-bindings: pinctrl: st,stm32: Document gpio-hog pattern property
  dt-bindings: pinctrl: st,stm32: Document gpio-line-names
  pinctrl: st: stop abusing of_get_named_gpio()
  pinctrl: wpcm450: Correct the fwnode_irq_get() return value check
  pinctrl: bcm: Remove unused struct bcm6328_pingroup
  pinctrl: qcom: restrict drivers per ARM/ARM64
  pinctrl: bcm: ns: Remove redundant dev_err call
  gpio: rockchip: request GPIO mux to pinctrl when setting direction
  pinctrl: rockchip: add pinmux_ops.gpio_set_direction callback
  pinctrl: cy8c95x0: Align function names in cy8c95x0_pmxops
  pinctrl: cy8c95x0: Drop atomicity on operations on push_pull
  pinctrl: cy8c95x0: Lock register accesses in cy8c95x0_set_mux()
  pinctrl: sunxi: sun50i-h5: Switch to use dev_err_probe() helper
  pinctrl: stm32: Switch to use dev_err_probe() helper
  dt-bindings: qcom-pmic-gpio: Add PM7250B and PM8450 bindings
  pinctrl: qcom: spmi-gpio: Add compatible for PM7250B
  ...

Pull input updates from Dmitry Torokhov:

 - a new driver for IBM Operational Panel

 - a new driver for PinePhone keyboards

 - RT5120 PMIC power key support

 - various enhancements and support for new models in xpad (Xbox) driver

 - a new compatible ID for Elan touchscreen driver

 - rework of adp5588-keys driver to support configuring via device
   properties (OF, ACPI, etc) instead of platform data, and proper
   support of optional gpiochip functionality (and removal of
   gpio-adp5588 driver)

 - improvements to firmware update handling in Synaptics RMI4 driver

 - support for double key matrix in mt6779-keypad

 - support for polled mode in adc-joystick driver

 - other assorted driver fixes, cleanups and improvements

* tag 'input-for-v6.1-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (90 commits)
  Input: i8042 - fix refount leak on sparc
  Input: i8042 - add LoongArch support in i8042-acpipnpio.h
  Input: i8042 - rename i8042-x86ia64io.h to i8042-acpipnpio.h
  Input: pinephone-keyboard - support the proxied I2C bus
  Input: pinephone-keyboard - add PinePhone keyboard driver
  dt-bindings: input: Add the PinePhone keyboard binding
  dt-bindings: input: Convert hid-over-i2c to DT schema
  input: drop empty comment blocks
  Input: xpad - add X-Box Adaptive Profile button
  Input: add ABS_PROFILE to uapi and documentation
  Input: xpad - add X-Box Adaptive XBox button
  Input: xpad - add X-Box Adaptive support
  Input: ims-pcu - fix spelling mistake "BOOLTLOADER" -> "BOOTLOADER"
  Input: ibm-panel - add missing MODULE_DEVICE_TABLE
  Input: icn8505 - utilize acpi_get_subsystem_id()
  Input: xpad - decipher xpadone packages with GIP defines
  Input: xpad - refactor using BIT() macro
  Input: synaptics-rmi4 - convert to use sysfs_emit() APIs
  Input: twl4030-pwrbutton - add missing of.h include
  Input: applespi - replace zero-length array with DECLARE_FLEX_ARRAY() helper
  ...

Pull fbdev updates from Helge Deller:
 "Here's a fix for the smscufx USB graphics card to prevent a kernel
  crash if it's plugged in/out too fast.

  The other patches are mostly small cleanups, fixes in failure paths
  and code removal:

   - fix an use-after-free in smscufx USB graphics driver

   - add missing pci_disable_device() in tridentfb failure paths

   - correctly handle irq detection failure in mb862xx driver

   - fix resume code in omapfb/dss

   - drop unused code in controlfb, tridentfb, arkfb, imxfb and udlfb

   - convert uvesafb to use scnprintf() instead of snprintf()

   - convert gbefb to use dev_groups

   - add MODULE_DEVICE_TABLE() entry to vga16fb"

* tag 'fbdev-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: mb862xx: Fix check of return value from irq_of_parse_and_map()
  fbdev: vga16fb: Add missing MODULE_DEVICE_TABLE() entry
  fbdev: tridentfb: Fix missing pci_disable_device() in probe and remove
  fbdev: smscufx: Fix use-after-free in ufx_ops_open()
  fbdev: gbefb: Convert to use dev_groups
  fbdev: imxfb: Remove redundant dev_err() call
  fbdev: omapfb/dss: Use pm_runtime_resume_and_get() instead of pm_runtime_get_sync()
  fbdev: uvesafb: Convert snprintf to scnprintf
  fbdev: arkfb: Remove the unused function dac_read_reg()
  fbdev: tridentfb: Remove the unused function shadowmode_off()
  fbdev: controlfb: Remove the unused function VAR_MATCH()
  fbdev: udlfb: Remove redundant initialization to variable identical

Pull dmi updates from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  firmware: dmi: Fortify entry point length checks

Pull IPMI updates from Corey Minyard:
 "Fix a bunch of little problems in IPMI

  This is mostly just doc, config, and little tweaks. Nothing big, which
  is why there was nothing for 6.0. There is one crash fix, but it's not
  something that I think anyone is using yet"

* tag 'for-linus-6.1-1' of https://github.com/cminyard/linux-ipmi:
  ipmi: Remove unused struct watcher_entry
  ipmi: kcs: aspeed: Update port address comments
  ipmi: Add __init/__exit annotations to module init/exit funcs
  ipmi:ipmb: Don't call ipmi_unregister_smi() on a register failure
  ipmi:ipmb: Fix a vague comment and a typo
  dt-binding: ipmi: add fallback to npcm845 compatible
  ipmi: Fix comment typo
  char: ipmi: modify NPCM KCS configuration
  dt-bindings: ipmi: Add npcm845 compatible

Commit 987f20a9 ("a.out: Remove the a.out implementation") removes
CONFIG_OSF4_COMPAT and its functionality. Hence, sys_osf_{readv,writev}
are now just aliases of sys_{readv,writev}.

Remove these needless aliases.

[ Identical patch also posted by Jason A. Donenfeld ]

Link: https://lore.kernel.org/lkml/CAHk-=wjwvBc3VQMNtUVUrMBVoMPSPu26OuatZ_+1gZ2m-PmmRA@mail.gmail.com/
Link: https://lore.kernel.org/all/20221004135301.1420873-1-Jason@zx2c4.com/Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>