cpu_map: Introduce IA32_ARCH_CAPABILITIES MSR bits for TAA

[libvirt] [PATCH 0/2] cpu_map: Introduce IA32_ARCH_CAPABILITIES MSR bits for TAA

Jiri Denemark posted 2 patches 4 years, 4 months ago

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src/cpu_map/x86_features.xml | 6 ++++++
1 file changed, 6 insertions(+)

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[libvirt] [PATCH 0/2] cpu_map: Introduce IA32_ARCH_CAPABILITIES MSR bits for TAA

Posted by Jiri Denemark 4 years, 4 months ago

CVE-2019-11135

TAA_NO and TSX_CTRL are new IA32_ARCH_CAPABILITIES MSR bits related to
the TSX Asynchronous Abort (TAA) vulnerability. See [1] and [2] for
details about the issue and mitigations.

[1] https://software.intel.com/security-software-guidance/insights/deep-dive-intel-transactional-synchronization-extensions-intel-tsx-asynchronous-abort
[2] https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html

Jiri Denemark (2):
  cpu_map: Add TAA_NO bit for IA32_ARCH_CAPABILITIES MSR
  cpu_map: Add TSX_CTRL bit for IA32_ARCH_CAPABILITIES MSR

 src/cpu_map/x86_features.xml | 6 ++++++
 1 file changed, 6 insertions(+)

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2.24.1

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Re: [libvirt] [PATCH 0/2] cpu_map: Introduce IA32_ARCH_CAPABILITIES MSR bits for TAA

Posted by Ján Tomko 4 years, 4 months ago

On Fri, Dec 13, 2019 at 12:48:31PM +0100, Jiri Denemark wrote:
>CVE-2019-11135
>
>TAA_NO and TSX_CTRL are new IA32_ARCH_CAPABILITIES MSR bits related to
>the TSX Asynchronous Abort (TAA) vulnerability. See [1] and [2] for
>details about the issue and mitigations.
>
>[1] https://software.intel.com/security-software-guidance/insights/deep-dive-intel-transactional-synchronization-extensions-intel-tsx-asynchronous-abort
>[2] https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html
>
>Jiri Denemark (2):
>  cpu_map: Add TAA_NO bit for IA32_ARCH_CAPABILITIES MSR
>  cpu_map: Add TSX_CTRL bit for IA32_ARCH_CAPABILITIES MSR
>
> src/cpu_map/x86_features.xml | 6 ++++++
> 1 file changed, 6 insertions(+)
>

Reviewed-by: Ján Tomko <jtomko@redhat.com>

Jano
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