From: Borislav Petkov <bp@alien8.de>
To: Wyes Karny <wyes.karny@amd.com>
Cc: linux-kernel@vger.kernel.org, Lewis.Carroll@amd.com,
Mario.Limonciello@amd.com, gautham.shenoy@amd.com,
Ananth.Narayan@amd.com, bharata@amd.com, len.brown@intel.com,
x86@kernel.org, tglx@linutronix.de, mingo@redhat.com,
dave.hansen@linux.intel.com, hpa@zytor.com, peterz@infradead.org,
chang.seok.bae@intel.com, keescook@chromium.org, metze@samba.org,
zhengqi.arch@bytedance.com, mark.rutland@arm.com
Subject: Re: [PATCH] x86: Prefer MWAIT over HALT on AMD processors
Date: Wed, 6 Apr 2022 11:25:49 +0200 [thread overview]
Message-ID: <Yk1cnYWF+L+OgoCa@zn.tnic> (raw)
In-Reply-To: <c6ceb0a5-c3fa-790e-d3c7-228c71a477c2@amd.com>
On Wed, Apr 06, 2022 at 11:44:52AM +0530, Wyes Karny wrote:
> If x86_FEATURE_ZEN is set and X86_FEATURE_MWAIT is not set or has
> X86_BUG_MONITOR then it won't return correct value.
Can that ever happen on Zen uarch?
Also, what does this mean: "allow MWAIT early on."?
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2022-04-06 12:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-05 13:00 Wyes Karny
2022-04-05 14:05 ` Borislav Petkov
2022-04-05 20:26 ` Carroll, Lewis
2022-04-05 20:38 ` Borislav Petkov
2022-04-05 21:49 ` Carroll, Lewis
2022-04-06 9:30 ` Borislav Petkov
2022-04-06 6:14 ` Wyes Karny
2022-04-06 9:25 ` Borislav Petkov [this message]
2022-04-05 14:07 ` Peter Zijlstra
2022-04-05 15:10 ` Dave Hansen
2022-04-05 15:34 ` Limonciello, Mario
2022-04-05 15:47 ` Dave Hansen
2022-04-05 20:40 ` Limonciello, Mario
2022-04-06 1:44 ` Thomas Gleixner
2022-04-06 14:23 ` Limonciello, Mario
2022-04-07 21:16 ` Dave Hansen
2022-04-08 1:24 ` Limonciello, Mario
2022-04-14 21:06 ` Limonciello, Mario
2022-04-07 2:19 ` Wen Pu
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