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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-08 11:10:58 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-08 11:10:58 -0700 |
commit | 410feb75de245664d66bc05ab2e2412751d10acf (patch) | |
tree | 73deae83ab33a7c0668eb00eb2e1d347b20782c9 /include/linux/acpi.h | |
parent | 2996148a9d4169f19a57827003c75605ce3b152b (diff) | |
parent | 0fe42512b2f03f9e5a20b9f55ef1013a68b4cd48 (diff) | |
download | linux-410feb75de245664d66bc05ab2e2412751d10acf.tar.gz linux-410feb75de245664d66bc05ab2e2412751d10acf.tar.bz2 linux-410feb75de245664d66bc05ab2e2412751d10acf.zip |
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Apart from the core arm64 and perf changes, the Spectre v4 mitigation
touches the arm KVM code and the ACPI PPTT support touches drivers/
(acpi and cacheinfo). I should have the maintainers' acks in place.
Summary:
- Spectre v4 mitigation (Speculative Store Bypass Disable) support
for arm64 using SMC firmware call to set a hardware chicken bit
- ACPI PPTT (Processor Properties Topology Table) parsing support and
enable the feature for arm64
- Report signal frame size to user via auxv (AT_MINSIGSTKSZ). The
primary motivation is Scalable Vector Extensions which requires
more space on the signal frame than the currently defined
MINSIGSTKSZ
- ARM perf patches: allow building arm-cci as module, demote
dev_warn() to dev_dbg() in arm-ccn event_init(), miscellaneous
cleanups
- cmpwait() WFE optimisation to avoid some spurious wakeups
- L1_CACHE_BYTES reverted back to 64 (for performance reasons that
have to do with some network allocations) while keeping
ARCH_DMA_MINALIGN to 128. cache_line_size() returns the actual
hardware Cache Writeback Granule
- Turn LSE atomics on by default in Kconfig
- Kernel fault reporting tidying
- Some #include and miscellaneous cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (53 commits)
arm64: Fix syscall restarting around signal suppressed by tracer
arm64: topology: Avoid checking numa mask for scheduler MC selection
ACPI / PPTT: fix build when CONFIG_ACPI_PPTT is not enabled
arm64: cpu_errata: include required headers
arm64: KVM: Move VCPU_WORKAROUND_2_FLAG macros to the top of the file
arm64: signal: Report signal frame size to userspace via auxv
arm64/sve: Thin out initialisation sanity-checks for sve_max_vl
arm64: KVM: Add ARCH_WORKAROUND_2 discovery through ARCH_FEATURES_FUNC_ID
arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests
arm64: KVM: Add ARCH_WORKAROUND_2 support for guests
arm64: KVM: Add HYP per-cpu accessors
arm64: ssbd: Add prctl interface for per-thread mitigation
arm64: ssbd: Introduce thread flag to control userspace mitigation
arm64: ssbd: Restore mitigation status on CPU resume
arm64: ssbd: Skip apply_ssbd if not using dynamic mitigation
arm64: ssbd: Add global mitigation state accessor
arm64: Add 'ssbd' command-line option
arm64: Add ARCH_WORKAROUND_2 probing
arm64: Add per-cpu infrastructure to call ARCH_WORKAROUND_2
arm64: Call ARCH_WORKAROUND_2 on transitions between EL0 and EL1
...
Diffstat (limited to 'include/linux/acpi.h')
-rw-r--r-- | include/linux/acpi.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 8758a2a9e6c1..4b35a66383f9 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1299,4 +1299,23 @@ static inline int lpit_read_residency_count_address(u64 *address) } #endif +#ifdef CONFIG_ACPI_PPTT +int find_acpi_cpu_topology(unsigned int cpu, int level); +int find_acpi_cpu_topology_package(unsigned int cpu); +int find_acpi_cpu_cache_topology(unsigned int cpu, int level); +#else +static inline int find_acpi_cpu_topology(unsigned int cpu, int level) +{ + return -EINVAL; +} +static inline int find_acpi_cpu_topology_package(unsigned int cpu) +{ + return -EINVAL; +} +static inline int find_acpi_cpu_cache_topology(unsigned int cpu, int level) +{ + return -EINVAL; +} +#endif + #endif /*_LINUX_ACPI_H*/ |