From: Yang Zhong <yang.zhong@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: yang.zhong@intel.com, "Tian, Kevin" <kevin.tian@intel.com>,
"Christopherson, , Sean" <seanjc@google.com>,
"jing2.liu@linux.intel.com" <jing2.liu@linux.intel.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"Wang, Wei W" <wei.w.wang@intel.com>,
"Zeng, Guang" <guang.zeng@intel.com>
Subject: Re: [RFC PATCH 1/7] x86: Fix the 64-byte boundary enumeration for extended state
Date: Fri, 21 Jan 2022 15:14:38 +0800 [thread overview]
Message-ID: <20220121071438.GA29921@yangzhon-Virtual> (raw)
In-Reply-To: <3aaa1a42-e3b0-2d55-78fd-368c925af4af@redhat.com>
On Tue, Jan 18, 2022 at 01:37:20PM +0100, Paolo Bonzini wrote:
> On 1/11/22 03:22, Yang Zhong wrote:
> > Thanks Kevin, I will update this in next version.
>
> Also:
>
> The extended state subleaves (EAX=0Dh, ECX=n, n>1).ECX[1]
> indicate whether the extended state component locates
> on the next 64-byte boundary following the preceding state
> component when the compacted format of an XSAVE area is
> used.
>
> Right now, they are all zero because no supported component
> needed the bit to be set, but the upcoming AMX feature will
> use it. Fix the subleaves value according to KVM's supported
> cpuid.
>
Thanks Paolo, I will update this in new version.
Yang
> Paolo
next prev parent reply other threads:[~2022-01-21 9:28 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-07 9:31 [RFC PATCH 0/7] AMX support in Qemu Yang Zhong
2022-01-07 9:31 ` [RFC PATCH 1/7] x86: Fix the 64-byte boundary enumeration for extended state Yang Zhong
2022-01-10 8:20 ` Tian, Kevin
2022-01-11 2:22 ` Yang Zhong
2022-01-18 12:37 ` Paolo Bonzini
2022-01-21 7:14 ` Yang Zhong [this message]
2022-01-07 9:31 ` [RFC PATCH 2/7] x86: Add AMX XTILECFG and XTILEDATA components Yang Zhong
2022-01-10 8:23 ` Tian, Kevin
2022-01-11 2:32 ` Yang Zhong
2022-01-18 12:39 ` Paolo Bonzini
2022-01-21 7:15 ` Yang Zhong
2022-01-07 9:31 ` [RFC PATCH 3/7] x86: Grant AMX permission for guest Yang Zhong
2022-01-10 8:36 ` Tian, Kevin
2022-01-11 6:46 ` Yang Zhong
2022-01-18 12:52 ` Paolo Bonzini
2022-01-18 13:06 ` Paolo Bonzini
2022-01-21 7:21 ` Yang Zhong
2022-01-07 9:31 ` [RFC PATCH 4/7] x86: Add XFD faulting bit for state components Yang Zhong
2022-01-10 8:38 ` Tian, Kevin
2022-01-11 5:32 ` Yang Zhong
2022-01-18 12:52 ` Paolo Bonzini
2022-01-21 7:18 ` Yang Zhong
2022-01-07 9:31 ` [RFC PATCH 5/7] x86: Add AMX CPUIDs enumeration Yang Zhong
2022-01-07 9:31 ` [RFC PATCH 6/7] x86: Use new XSAVE ioctls handling Yang Zhong
2022-01-10 8:40 ` Tian, Kevin
2022-01-10 9:47 ` Zeng Guang
2022-01-11 2:30 ` Tian, Kevin
2022-01-11 4:29 ` Zeng Guang
2022-01-12 2:51 ` Zeng Guang
2022-01-12 4:34 ` Wang, Wei W
2022-01-07 9:31 ` [RFC PATCH 7/7] x86: Support XFD and AMX xsave data migration Yang Zhong
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