wireguard-linux/arch/x86/kernel/cpu/scattered.c, branch jd/unified-crypt-queue

x86/mm/pat: Rename =>

2019-12-10T09:12:55Z

pat.h is a file whose main purpose is to provide the memtype_*() APIs. PAT is the low level hardware mechanism - but the high level abstraction is memtype. So name the header as well - this goes hand in hand with memtype.c and memtype_interval.c. Signed-off-by: Ingo Molnar

x86/cpufeatures: Combine word 11 and 12 into a new scattered features word

2019-06-20T10:38:44Z

It's a waste for the four X86_FEATURE_CQM_* feature bits to occupy two whole feature bits words. To better utilize feature words, re-define word 11 to host scattered features and move the four X86_FEATURE_CQM_* features into Linux defined word 11. More scattered features can be added in word 11 in the future. Rename leaf 11 in cpuid_leafs to CPUID_LNX_4 to reflect it's a Linux-defined leaf. Rename leaf 12 as CPUID_DUMMY which will be replaced by a meaningful name in the next patch when CPUID.7.1:EAX occupies world 12. Maximum number of RMID and cache occupancy scale are retrieved from CPUID.0xf.1 after scattered CQM features are enumerated. Carve out the code into a separate function. KVM doesn't support resctrl now. So it's safe to move the X86_FEATURE_CQM_* features to scattered features word 11 for KVM. Signed-off-by: Fenghua Yu Signed-off-by: Borislav Petkov Cc: Aaron Lewis Cc: Andy Lutomirski Cc: Babu Moger Cc: "Chang S. Bae" Cc: "Sean J Christopherson" Cc: Frederic Weisbecker Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jann Horn Cc: Juergen Gross Cc: Konrad Rzeszutek Wilk Cc: kvm ML Cc: Masahiro Yamada Cc: Masami Hiramatsu Cc: Nadav Amit Cc: Paolo Bonzini Cc: Pavel Tatashin Cc: Peter Feiner Cc: "Peter Zijlstra (Intel)" Cc: "Radim Krčmář" Cc: "Rafael J. Wysocki" Cc: Ravi V Shankar Cc: Sherry Hurwitz Cc: Thomas Gleixner Cc: Thomas Lendacky Cc: x86 Link: https://lkml.kernel.org/r/1560794416-217638-2-git-send-email-fenghua.yu@intel.com

Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-12-27T01:35:41Z

Pull x86 cpu updates from Ingo Molnar: "Misc changes: - Fix nr_cpus= boot option interaction bug with logical package management - Clean up UMIP detection messages - Add WBNOINVD instruction detection - Remove the unused get_scattered_cpuid_leaf() function" * 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/topology: Use total_cpus for max logical packages calculation x86/umip: Make the UMIP activated message generic x86/umip: Print UMIP line only once x86/cpufeatures: Add WBNOINVD feature definition x86/cpufeatures: Remove get_scattered_cpuid_leaf()

Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-12-27T01:03:51Z

Pull x86 cleanups from Ingo Molnar: "Misc cleanups" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kprobes: Remove trampoline_handler() prototype x86/kernel: Fix more -Wmissing-prototypes warnings x86: Fix various typos in comments x86/headers: Fix -Wmissing-prototypes warning x86/process: Avoid unnecessary NULL check in get_wchan() x86/traps: Complete prototype declarations x86/mce: Fix -Wmissing-prototypes warnings x86/gart: Rewrite early_gart_iommu_check() comment

x86/kernel: Fix more -Wmissing-prototypes warnings

2018-12-08T11:24:35Z

... with the goal of eventually enabling -Wmissing-prototypes by default. At least on x86. Make functions static where possible, otherwise add prototypes or make them visible through includes. asm/trace/ changes courtesy of Steven Rostedt . Signed-off-by: Borislav Petkov Reviewed-by: Masami Hiramatsu Reviewed-by: Ingo Molnar Acked-by: Rafael J. Wysocki # ACPI + cpufreq bits Cc: Andrew Banman Cc: Dimitri Sivanich Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Mike Travis Cc: "Steven Rostedt (VMware)" Cc: Thomas Gleixner Cc: Yi Wang Cc: linux-acpi@vger.kernel.org

x86/resctrl: Add AMD's X86_FEATURE_MBA to the scattered CPUID features

2018-11-22T19:16:19Z

The feature bit X86_FEATURE_MBA is detected via CPUID leaf 0x80000008 EBX Bit 06. This bit indicates the support of AMD's MBA feature. This feature is supported by both Intel and AMD. But they are detected in different CPUID leaves. [ bp: s/cpuid/CPUID/g ] Signed-off-by: Sherry Hurwitz Signed-off-by: Babu Moger Signed-off-by: Borislav Petkov Reviewed-by: Borislav Petkov Cc: Andrew Morton Cc: Andy Lutomirski Cc: Arnd Bergmann Cc: Brijesh Singh Cc: "Chang S. Bae" Cc: David Miller Cc: David Woodhouse Cc: Dmitry Safonov Cc: Fenghua Yu Cc: Greg Kroah-Hartman Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jann Horn Cc: Joerg Roedel Cc: Jonathan Corbet Cc: Josh Poimboeuf Cc: Kate Stewart Cc: "Kirill A. Shutemov" Cc: Cc: Mauro Carvalho Chehab Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Philippe Ombredanne Cc: Pu Wen Cc: Cc: "Rafael J. Wysocki" Cc: Reinette Chatre Cc: Rian Hunter Cc: Sherry Hurwitz Cc: Suravee Suthikulpanit Cc: Thomas Gleixner Cc: Thomas Lendacky Cc: Tony Luck Cc: Vitaly Kuznetsov Cc: Link: https://lkml.kernel.org/r/20181121202811.4492-10-babu.moger@amd.com

x86/cpufeatures: Remove get_scattered_cpuid_leaf()

2018-11-05T19:54:20Z

get_scattered_cpuid_leaf() was added[1] to help KVM rebuild hardware- defined leafs that are rearranged by Linux to avoid bloating the x86_capability array. Eventually, the last consumer of the function was removed[2], but the function itself was kept, perhaps even intentionally as a form of documentation. Remove get_scattered_cpuid_leaf() as it is currently not used by KVM. Furthermore, simply rebuilding the "real" leaf does not resolve all of KVM's woes when it comes to exposing a scattered CPUID feature, i.e. keeping the function as documentation may be counter-productive in some scenarios, e.g. when KVM needs to do more than simply expose the leaf. [1] 47bdf3378d62 ("x86/cpuid: Provide get_scattered_cpuid_leaf()") [2] b7b27aa011a1 ("KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX") Signed-off-by: Sean Christopherson Signed-off-by: Borislav Petkov CC: "H. Peter Anvin" CC: Ingo Molnar Cc: Paolo Bonzini Cc: Radim Krčmář CC: Thomas Gleixner CC: x86-ml Link: http://lkml.kernel.org/r/20181105185725.18679-1-sean.j.christopherson@intel.com

Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-02-01T14:04:17Z

Topic branch for stable KVM clockource under Hyper-V. Thanks to Christoffer Dall for resolving the ARM conflict.

Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-01-30T03:08:02Z

Pull x86/pti updates from Thomas Gleixner: "Another set of melted spectrum related changes: - Code simplifications and cleanups for RSB and retpolines. - Make the indirect calls in KVM speculation safe. - Whitelist CPUs which are known not to speculate from Meltdown and prepare for the new CPUID flag which tells the kernel that a CPU is not affected. - A less rigorous variant of the module retpoline check which merily warns when a non-retpoline protected module is loaded and reflects that fact in the sysfs file. - Prepare for Indirect Branch Prediction Barrier support. - Prepare for exposure of the Speculation Control MSRs to guests, so guest OSes which depend on those "features" can use them. Includes a blacklist of the broken microcodes. The actual exposure of the MSRs through KVM is still being worked on" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/speculation: Simplify indirect_branch_prediction_barrier() x86/retpoline: Simplify vmexit_fill_RSB() x86/cpufeatures: Clean up Spectre v2 related CPUID flags x86/cpu/bugs: Make retpoline module warning conditional x86/bugs: Drop one "mitigation" from dmesg x86/nospec: Fix header guards names x86/alternative: Print unadorned pointers x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown x86/msr: Add definitions for new speculation control MSRs x86/cpufeatures: Add AMD feature bits for Speculation Control x86/cpufeatures: Add Intel feature bits for Speculation Control x86/cpufeatures: Add CPUID_7_EDX CPUID leaf module/retpoline: Warn about missing retpoline in module KVM: VMX: Make indirect call speculation safe KVM: x86: Make indirect calls in emulator speculation safe

x86/cpufeatures: Add CPUID_7_EDX CPUID leaf

2018-01-26T14:53:16Z

This is a pure feature bits leaf. There are two AVX512 feature bits in it already which were handled as scattered bits, and three more from this leaf are going to be added for speculation control features. Signed-off-by: David Woodhouse Signed-off-by: Thomas Gleixner Reviewed-by: Greg Kroah-Hartman Reviewed-by: Borislav Petkov Cc: gnomes@lxorguk.ukuu.org.uk Cc: ak@linux.intel.com Cc: ashok.raj@intel.com Cc: dave.hansen@intel.com Cc: karahmed@amazon.de Cc: arjan@linux.intel.com Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: bp@alien8.de Cc: pbonzini@redhat.com Cc: tim.c.chen@linux.intel.com Cc: gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/1516896855-7642-2-git-send-email-dwmw@amazon.co.uk