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From: Zhenzhong Duan <zhenzhong.duan@intel.com>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, xiaoyao.li@intel.com,
	xiangfeix.ma@intel.com, chao.p.peng@intel.com,
	Zhenzhong Duan <zhenzhong.duan@intel.com>
Subject: [PATCH v3 0/1] Introduce Icelake-Server-v7 to enable TSX
Date: Wed, 20 Mar 2024 17:31:37 +0800	[thread overview]
Message-ID: <20240320093138.80267-1-zhenzhong.duan@intel.com> (raw)

Hi,

This is a new effort trying to enable TSX in Icelake model.

Currently Icelake-Server-v3 and above has TSX disabled but taa-no enabled.
This is a invalid config as taa-no hints TSX exist and is invulnerable.
When start L2 guest with both L1/L2 using Icelake-Server-v3 or above,
QEMU reports below warning:

"warning: host doesn't support requested feature: MSR(10AH).taa-no [bit 8]"


Different from v2 patch https://www.mail-archive.com/qemu-devel@nongnu.org/msg907730.html
This patch add a new version Icelake-Server-v7, so the compatility of old
version is guaranteed.

Comments welcome!

Thanks
Zhenzhong

Zhenzhong Duan (1):
  target/i386: Introduce Icelake-Server-v7 to enable TSX

 target/i386/cpu.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

-- 
2.34.1



             reply	other threads:[~2024-03-20  9:34 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-20  9:31 Zhenzhong Duan [this message]
2024-03-20  9:31 ` [PATCH v3 1/1] target/i386: Introduce Icelake-Server-v7 to enable TSX Zhenzhong Duan
2024-03-20 10:34 ` [PATCH v3 0/1] " Paolo Bonzini

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