From: Borislav Petkov <bp@alien8.de>
To: Stephane Eranian <eranian@google.com>
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
kim.phillips@amd.com, acme@redhat.com, jolsa@redhat.com,
songliubraving@fb.com, mpe@ellerman.id.au, maddy@linux.ibm.com
Subject: Re: [PATCH v4 02/14] x86/cpufeatures: add AMD Fam19h Branch Sampling feature
Date: Fri, 10 Dec 2021 22:21:32 +0100 [thread overview]
Message-ID: <YbPE3PDQ6Ro9oVEH@zn.tnic> (raw)
In-Reply-To: <20211210210229.2991238-3-eranian@google.com>
On Fri, Dec 10, 2021 at 01:02:17PM -0800, Stephane Eranian wrote:
> This patch adds a cpu feature for AMD Fam19h Branch Sampling feature as bit
> 31 of EBX on CPUID leaf function 0x80000008.
>
> Signed-off-by: Stephane Eranian <eranian@google.com>
> ---
> arch/x86/include/asm/cpufeatures.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
> index d5b5f2ab87a0..e71443f93f04 100644
> --- a/arch/x86/include/asm/cpufeatures.h
> +++ b/arch/x86/include/asm/cpufeatures.h
> @@ -315,6 +315,7 @@
> #define X86_FEATURE_AMD_SSBD (13*32+24) /* "" Speculative Store Bypass Disable */
> #define X86_FEATURE_VIRT_SSBD (13*32+25) /* Virtualized Speculative Store Bypass Disable */
> #define X86_FEATURE_AMD_SSB_NO (13*32+26) /* "" Speculative Store Bypass is fixed in hardware. */
> +#define X86_FEATURE_AMD_BRS (13*32+31) /* Branch Sampling available */
>
> /* Thermal and Power Management Leaf, CPUID level 0x00000006 (EAX), word 14 */
> #define X86_FEATURE_DTHERM (14*32+ 0) /* Digital Thermal Sensor */
> --
It seems you missed my note from the last time:
https://lore.kernel.org/r/YY0OUNqv1w/ihmHX@zn.tnic
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2021-12-10 21:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-10 21:02 [PATCH v4 00/14] perf/x86/amd: Add AMD Fam19h Branch Sampling support Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 01/14] perf/core: add perf_clear_branch_entry_bitfields() helper Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 02/14] x86/cpufeatures: add AMD Fam19h Branch Sampling feature Stephane Eranian
2021-12-10 21:21 ` Borislav Petkov [this message]
2021-12-10 21:25 ` Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 03/14] perf/x86/amd: add AMD Fam19h Branch Sampling support Stephane Eranian
2021-12-29 9:54 ` Like Xu
2022-01-03 23:24 ` Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 04/14] perf/x86/amd: add branch-brs helper event for Fam19h BRS Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 05/14] perf/x86/amd: enable branch sampling priv level filtering Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 06/14] perf/x86/amd: add AMD branch sampling period adjustment Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 07/14] perf/x86/amd: make Zen3 branch sampling opt-in Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 08/14] ACPI: add perf low power callback Stephane Eranian
2021-12-13 5:56 ` kernel test robot
2021-12-13 22:40 ` kernel test robot
2021-12-23 13:11 ` Like Xu
2021-12-10 21:02 ` [PATCH v4 09/14] perf/x86/amd: add idle hooks for branch sampling Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 10/14] perf tools: add branch-brs as a new event Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 11/14] perf evsel: Make evsel__env always return a valid env Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 12/14] perf tools: Improve IBS error handling Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 13/14] perf tools: Improve error handling of AMD Branch Sampling Stephane Eranian
2021-12-10 21:02 ` [PATCH v4 14/14] perf report: add addr_from/addr_to sort dimensions Stephane Eranian
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