From: "Jiaxun Yang" <jiaxun.yang@flygoat.com>
To: "Borislav Petkov" <bp@alien8.de>
Cc: "Dave Hansen" <dave.hansen@intel.com>,
x86@kernel.org, "Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
dave.hansen@linux.intel.com, hpa@zytor.com,
chang.seok.bae@intel.com, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 00/10] x86: Allocate AVX512 xstate ondemand
Date: Fri, 03 Dec 2021 11:55:44 +0000 [thread overview]
Message-ID: <8aa8ed78-5c78-49c2-b100-607a8f4e8eae@www.fastmail.com> (raw)
In-Reply-To: <YaoEqpNkuAqSlPaq@zn.tnic>
在2021年12月3日十二月 上午11:51，Borislav Petkov写道：
> On Fri, Dec 03, 2021 at 11:42:10AM +0000, Jiaxun Yang wrote:
>> If it's improper I'll drop the statement in commit message :-)
>
> Actually you should answer his question about what happens if you clear
> those two bits in that MSR.
It made AVX512 states available in XCR0. I'm still doing some experiments
to see if AVX512 is actually enabled by this.
Thanks.
>
> --
> Regards/Gruss,
> Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette
--
- Jiaxun
next prev parent reply other threads:[~2021-12-03 11:56 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-03 0:36 Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 01/10] x86/fpu: Remove duplicated declaration of __fpu_state_size_dynamic Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 02/10] x86/fpu: Split fpu_xfd_enabled from fpu_state_size_dynamic Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 03/10] x86/fpu: Calculate xsave state addr on fly Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 04/10] x86/fpu: Remove xstate_comp_offsets cache Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 05/10] x86/fpu: Cache xstate_is_aligned Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 06/10] x86/fpu/xcr: Return all enabled xfeature if CPU doesn't support Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 07/10] x86/fpu: Rellocate fpstate on save_fpregs_to_fpstate Jiaxun Yang
2021-12-03 0:44 ` Dave Hansen
2021-12-03 11:39 ` Jiaxun Yang
2021-12-03 15:18 ` Dave Hansen
2021-12-03 15:51 ` Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 08/10] x86/fpu: Don't keep state_size in perm struct Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 09/10] x86/fpu: Split out XFEATURE_MASK_KERNEL_DYNAMIC Jiaxun Yang
2021-12-03 0:36 ` [RFC PATCH 10/10] x86/fpu: Mark AVX512 xfeatures as kernel dynamic Jiaxun Yang
2021-12-03 0:40 ` [RFC PATCH 00/10] x86: Allocate AVX512 xstate ondemand Dave Hansen
2021-12-03 0:45 ` Jiaxun Yang
2021-12-03 0:58 ` Dave Hansen
2021-12-03 9:20 ` David Laight
2021-12-03 11:42 ` Jiaxun Yang
2021-12-03 11:51 ` Borislav Petkov
2021-12-03 11:55 ` Jiaxun Yang [this message]
2021-12-04 11:55 ` Peter Zijlstra
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