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Re: [PATCH] target/i386: add support for MSR_IA32_TSX_CTRL
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From: |
Eduardo Habkost |
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Subject: |
Re: [PATCH] target/i386: add support for MSR_IA32_TSX_CTRL |
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Date: |
Wed, 20 Nov 2019 17:04:20 -0300 |
On Wed, Nov 20, 2019 at 01:19:22PM +0100, Paolo Bonzini wrote:
> The MSR_IA32_TSX_CTRL MSR can be used to hide TSX (also known as the
> Trusty Side-channel Extension). By virtualizing the MSR, KVM guests
> can disable TSX and avoid paying the price of mitigating TSX-based
> attacks on microarchitectural side channels.
>
> Signed-off-by: Paolo Bonzini <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
Minor suggestion, though: replacing the tabs below with spaces:
[...]
> +#define ARCH_CAP_TSX_CTRL_MSR (1<<7)
[...]
> +#define MSR_IA32_TSX_CTRL 0x122
--
Eduardo