From: Ingo Molnar <mingo@kernel.org>
To: Jinank Jain <jinankjain@linux.microsoft.com>
Cc: seanjc@google.com, pbonzini@redhat.com, tglx@linutronix.de,
mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
x86@kernel.org, hpa@zytor.com, jinankjain@microsoft.com,
thomas.lendacky@amd.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, wei.liu@kernel.org,
tiala@microsoft.com
Subject: Re: [PATCH] arch/x86: Set XSS while handling #VC intercept for CPUID
Date: Tue, 3 Oct 2023 11:40:29 +0200 [thread overview]
Message-ID: <ZRvhjd48oHq2gXB2@gmail.com> (raw)
In-Reply-To: <20231003092835.18974-1-jinankjain@linux.microsoft.com>
* Jinank Jain <jinankjain@linux.microsoft.com> wrote:
> According to [1], while handling the #VC intercept for CPUID leaf
> 0x0000_000D, we need to supply the value of XSS in the GHCB page. If
> this value is not provided then a spec compliant hypervisor can fail the
> GHCB request and kill the guest.
>
> [1] https://www.amd.com/system/files/TechDocs/56421-guest-hypervisor-communication-block-standardization.pdf
URL doesn't seem to exist, I get redirected to AMD's 404 page.
Thanks,
Ingo
next prev parent reply other threads:[~2023-10-03 9:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-03 9:28 [PATCH] arch/x86: Set XSS while handling #VC intercept for CPUID Jinank Jain
2023-10-03 9:40 ` Ingo Molnar [this message]
2023-10-03 16:07 ` Dave Hansen
2023-10-03 18:27 ` Tom Lendacky
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