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: 25+ 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 5:56 ` kernel test robot
2021-12-13 22:40 ` kernel test robot
2021-12-13 22:40 ` kernel test robot
2021-12-23 13:11 ` Like Xu
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YbPE3PDQ6Ro9oVEH@zn.tnic \
--to=bp@alien8.de \
--cc=acme@redhat.com \
--cc=eranian@google.com \
--cc=jolsa@redhat.com \
--cc=kim.phillips@amd.com \
--cc=linux-kernel@vger.kernel.org \
--cc=maddy@linux.ibm.com \
--cc=mpe@ellerman.id.au \
--cc=peterz@infradead.org \
--cc=songliubraving@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.