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7 Commits
Author | SHA1 | Message | Date | |
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Ingo Molnar
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e2f73a1828 |
tools/headers: Synchronize kernel ABI headers, v4.17-rc1
Sync the following tooling headers with the latest kernel version: tools/arch/arm/include/uapi/asm/kvm.h - New ABI: KVM_REG_ARM_* tools/arch/x86/include/asm/required-features.h - Removal of NEED_LA57 dependency tools/arch/x86/include/uapi/asm/kvm.h - New KVM ABI: KVM_SYNC_X86_* tools/include/uapi/asm-generic/mman-common.h - New ABI: MAP_FIXED_NOREPLACE flag tools/include/uapi/linux/bpf.h - New ABI: BPF_F_SEQ_NUMBER functions tools/include/uapi/linux/if_link.h - New ABI: IFLA tun and rmnet support tools/include/uapi/linux/kvm.h - New ABI: hyperv eventfd and CONN_ID_MASK support plus header cleanups tools/include/uapi/sound/asound.h - New ABI: SNDRV_PCM_FORMAT_FIRST PCM format specifier tools/perf/arch/x86/entry/syscalls/syscall_64.tbl - The x86 system call table description changed due to the ptregs changes and the renames, in: |
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Linus Torvalds
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a3841f94c7 |
libnvdimm for 4.15
* Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable 'userspace flush' of persistent memory updates via filesystem-dax mappings. It arranges for any filesystem metadata updates that may be required to satisfy a write fault to also be flushed ("on disk") before the kernel returns to userspace from the fault handler. Effectively every write-fault that dirties metadata completes an fsync() before returning from the fault handler. The new MAP_SHARED_VALIDATE mapping type guarantees that the MAP_SYNC flag is validated as supported by the filesystem's ->mmap() file operation. * Add support for the standard ACPI 6.2 label access methods that replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods. This enables interoperability with environments that only implement the standardized methods. * Add support for the ACPI 6.2 NVDIMM media error injection methods. * Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for latch last shutdown status, firmware update, SMART error injection, and SMART alarm threshold control. * Cleanup physical address information disclosures to be root-only. * Fix revalidation of the DIMM "locked label area" status to support dynamic unlock of the label area. * Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA (system-physical-address) command and error injection commands. Acknowledgements that came after the commits were pushed to -next: |
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Ingo Molnar
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fb7df12d64 |
tools/headers: Synchronize kernel ABI headers
After the SPDX license tags were added a number of tooling headers got out of sync with their kernel variants, generating lots of build warnings. Sync them: - tools/arch/x86/include/asm/disabled-features.h, tools/arch/x86/include/asm/required-features.h, tools/include/linux/hash.h: Remove the SPDX tag where the kernel version does not have it. - tools/include/asm-generic/bitops/__fls.h, tools/include/asm-generic/bitops/arch_hweight.h, tools/include/asm-generic/bitops/const_hweight.h, tools/include/asm-generic/bitops/fls.h, tools/include/asm-generic/bitops/fls64.h, tools/include/uapi/asm-generic/ioctls.h, tools/include/uapi/asm-generic/mman-common.h, tools/include/uapi/sound/asound.h, tools/include/uapi/linux/kvm.h, tools/include/uapi/linux/perf_event.h, tools/include/uapi/linux/sched.h, tools/include/uapi/linux/vhost.h, tools/include/uapi/sound/asound.h: Add the SPDX tag of the respective kernel header. - tools/include/uapi/linux/bpf_common.h, tools/include/uapi/linux/fcntl.h, tools/include/uapi/linux/hw_breakpoint.h, tools/include/uapi/linux/mman.h, tools/include/uapi/linux/stat.h, Change the tag to the kernel header version: -/* SPDX-License-Identifier: GPL-2.0 */ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ Also sync other header details: - include/uapi/sound/asound.h: Fix pointless end of line whitespace noise the header grew in this cycle. - tools/arch/x86/lib/memcpy_64.S: Sync the code and add tools/include/asm/export.h with dummy wrappers to support building the kernel side code in a tooling header environment. - tools/include/uapi/asm-generic/mman.h, tools/include/uapi/linux/bpf.h: Sync other details that don't impact tooling's use of the ABIs. Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Dan Williams
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1c97259740 |
mm: introduce MAP_SHARED_VALIDATE, a mechanism to safely define new mmap flags
The mmap(2) syscall suffers from the ABI anti-pattern of not validating unknown flags. However, proposals like MAP_SYNC need a mechanism to define new behavior that is known to fail on older kernels without the support. Define a new MAP_SHARED_VALIDATE flag pattern that is guaranteed to fail on all legacy mmap implementations. It is worth noting that the original proposal was for a standalone MAP_VALIDATE flag. However, when that could not be supported by all archs Linus observed: I see why you *think* you want a bitmap. You think you want a bitmap because you want to make MAP_VALIDATE be part of MAP_SYNC etc, so that people can do ret = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_SYNC, fd, 0); and "know" that MAP_SYNC actually takes. And I'm saying that whole wish is bogus. You're fundamentally depending on special semantics, just make it explicit. It's already not portable, so don't try to make it so. Rename that MAP_VALIDATE as MAP_SHARED_VALIDATE, make it have a value of 0x3, and make people do ret = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED_VALIDATE | MAP_SYNC, fd, 0); and then the kernel side is easier too (none of that random garbage playing games with looking at the "MAP_VALIDATE bit", but just another case statement in that map type thing. Boom. Done. Similar to ->fallocate() we also want the ability to validate the support for new flags on a per ->mmap() 'struct file_operations' instance basis. Towards that end arrange for flags to be generically validated against a mmap_supported_flags exported by 'struct file_operations'. By default all existing flags are implicitly supported, but new flags require MAP_SHARED_VALIDATE and per-instance-opt-in. Cc: Jan Kara <jack@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Andy Lutomirski <luto@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Suggested-by: Christoph Hellwig <hch@lst.de> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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Ingo Molnar
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549a397652 |
tools include: Sync kernel ABI headers with tooling headers
Time for a sync with ABI/uapi headers with the upcoming v4.14 kernel. None of the ABI changes require any source code level changes to our existing in-kernel tooling code: - tools/arch/s390/include/uapi/asm/kvm.h: New KVM_S390_VM_TOD_EXT ABI, not used by in-kernel tooling. - tools/arch/x86/include/asm/cpufeatures.h: tools/arch/x86/include/asm/disabled-features.h: New PCID, SME and VGIF x86 CPU feature bits defined. - tools/include/asm-generic/hugetlb_encode.h: tools/include/uapi/asm-generic/mman-common.h: tools/include/uapi/linux/mman.h: Two new madvise() flags, plus a hugetlb system call mmap flags restructuring/extension changes. - tools/include/uapi/drm/drm.h: tools/include/uapi/drm/i915_drm.h: New drm_syncobj_create flags definitions, new drm_syncobj_wait and drm_syncobj_array ABIs. DRM_I915_PERF_* calls and a new I915_PARAM_HAS_EXEC_FENCE_ARRAY ABI for the Intel driver. - tools/include/uapi/linux/bpf.h: New bpf_sock fields (::mark and ::priority), new XDP_REDIRECT action, new kvm_ppc_smmu_info fields (::data_keys, instr_keys) Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: Yao Jin <yao.jin@linux.intel.com> Link: http://lkml.kernel.org/r/20170913073823.lxmi4c7ejqlfabjx@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Arnaldo Carvalho de Melo
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0fb75c8ce1 |
tools: Update asm-generic/mman-common.h copy from the kernel
To get the defines introduced in the commit
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Wang Nan
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f3539c12d8 |
tools include: Add uapi mman.h for each architecture
Some mmap related macros have different values for different architectures. This patch introduces uapi mman.h for each architectures. Three headers are cloned from kernel include to tools/include: tools/include/uapi/asm-generic/mman-common.h tools/include/uapi/asm-generic/mman.h tools/include/uapi/linux/mman.h The main part of this patch is generated by following script: macros=`cat $0 | awk 'V==1 {print}; /^# start macro list/ {V=1}'` for arch in `ls tools/arch` do [ -d tools/arch/$arch/include/uapi/asm ] || mkdir -p tools/arch/$arch/include/uapi/asm src=arch/$arch/include/uapi/asm/mman.h target=tools/arch/$arch/include/uapi/asm/mman.h guard="TOOLS_ARCH_"`echo $arch | awk '{print toupper($0)}'`_UAPI_ASM_MMAN_FIX_H echo '#ifndef '$guard > $target echo '#define '$guard >> $target [ -f $src ] && for m in $macros do if grep '#define[ \t]*'$m $src > /dev/null 2>&1 then grep -h '#define[ \t]*'$m $src | sed 's/[ \t]*\/\*.*$//g' >> $target fi done if [ -f $src ] then grep '#include <asm-generic' $src >> $target else echo "#include <asm-generic/mman.h>" >> $target fi echo '#endif' >> $target echo "$target" done exit 0 # Following macros are extracted from: # tools/perf/trace/beauty/mmap.c # # start macro list MADV_DODUMP MADV_DOFORK MADV_DONTDUMP MADV_DONTFORK MADV_DONTNEED MADV_HUGEPAGE MADV_HWPOISON MADV_MERGEABLE MADV_NOHUGEPAGE MADV_NORMAL MADV_RANDOM MADV_REMOVE MADV_SEQUENTIAL MADV_SOFT_OFFLINE MADV_UNMERGEABLE MADV_WILLNEED MAP_32BIT MAP_ANONYMOUS MAP_DENYWRITE MAP_EXECUTABLE MAP_FILE MAP_FIXED MAP_GROWSDOWN MAP_HUGETLB MAP_LOCKED MAP_NONBLOCK MAP_NORESERVE MAP_POPULATE MAP_PRIVATE MAP_SHARED MAP_STACK MAP_UNINITIALIZED MREMAP_FIXED MREMAP_MAYMOVE PROT_EXEC PROT_GROWSDOWN PROT_GROWSUP PROT_NONE PROT_READ PROT_SEM PROT_WRITE Signed-off-by: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1473684871-209320-2-git-send-email-wangnan0@huawei.com [ Added new files to tools/perf/MANIFEST to fix the detached tarball build, add mman.h for ARC ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |