From: Sean Christopherson <seanjc@google.com>
To: Sasha Levin <sashal@kernel.org>
Cc: stable@vger.kernel.org, Maxim Levitsky <mlevitsk@redhat.com>
Subject: Re: [PATCH 6.12.y 3/5] KVM: x86: Add X86EMUL_F_MSR and X86EMUL_F_DT_LOAD to aid canonical checks
Date: Thu, 24 Jul 2025 08:38:15 -0700 [thread overview]
Message-ID: <aIJTZ9j1v0k_GXMa@google.com> (raw)
In-Reply-To: <20250723151416.1092631-3-sashal@kernel.org>
On Wed, Jul 23, 2025, Sasha Levin wrote:
> From: Maxim Levitsky <mlevitsk@redhat.com>
>
> [ Upstream commit c534b37b7584e2abc5d487b4e017f61a61959ca9 ]
>
> Add emulation flags for MSR accesses and Descriptor Tables loads, and pass
> the new flags as appropriate to emul_is_noncanonical_address(). The flags
> will be used to perform the correct canonical check, as the type of access
> affects whether or not CR4.LA57 is consulted when determining the canonical
> bit.
>
> No functional change is intended.
>
> Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
> Link: https://lore.kernel.org/r/20240906221824.491834-3-mlevitsk@redhat.com
> [sean: split to separate patch, massage changelog]
> Signed-off-by: Sean Christopherson <seanjc@google.com>
> Stable-dep-of: fa787ac07b3c ("KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush")
> Signed-off-by: Sasha Levin <sashal@kernel.org>
> ---
Acked-by: Sean Christopherson <seanjc@google.com>
next prev parent reply other threads:[~2025-07-24 15:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-12 14:25 FAILED: patch "[PATCH] KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB" failed to apply to 6.12-stable tree gregkh
2025-07-23 15:14 ` [PATCH 6.12.y 1/5] KVM: x86: drop x86.h include from cpuid.h Sasha Levin
2025-07-23 15:14 ` [PATCH 6.12.y 2/5] KVM: x86: Route non-canonical checks in emulator through emulate_ops Sasha Levin
2025-07-24 15:38 ` Sean Christopherson
2025-07-23 15:14 ` [PATCH 6.12.y 3/5] KVM: x86: Add X86EMUL_F_MSR and X86EMUL_F_DT_LOAD to aid canonical checks Sasha Levin
2025-07-24 15:38 ` Sean Christopherson [this message]
2025-07-23 15:14 ` [PATCH 6.12.y 4/5] KVM: x86: model canonical checks more precisely Sasha Levin
2025-07-24 15:38 ` Sean Christopherson
2025-07-23 15:14 ` [PATCH 6.12.y 5/5] KVM: x86/hyper-v: Skip non-canonical addresses during PV TLB flush Sasha Levin
2025-07-24 15:38 ` Sean Christopherson
2025-07-24 15:37 ` [PATCH 6.12.y 1/5] KVM: x86: drop x86.h include from cpuid.h Sean Christopherson
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