From: Dave Hansen <dave.hansen@intel.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: michael.roth@amd.com, isaku.yamahata@intel.com,
seanjc@google.com, Dave Hansen <dave.hansen@linux.intel.com>
Subject: Re: [PATCH v4 09/15] KVM: SEV: sync FPU and AVX state at LAUNCH_UPDATE_VMSA time
Date: Tue, 19 Mar 2024 13:07:39 -0700 [thread overview]
Message-ID: <56958bb8-1b4e-4691-8d81-d8e5846a3b06@intel.com> (raw)
In-Reply-To: <20240318233352.2728327-10-pbonzini@redhat.com>
On 3/18/24 16:33, Paolo Bonzini wrote:
> Since the XSAVE state for AVX is the first, it does not need the
> compacted-state handling of get_xsave_addr(). However, there are other
> parts of XSAVE state in the VMSA that currently are not handled, and
> the validation logic of get_xsave_addr() is pointless to duplicate
> in KVM, so move get_xsave_addr() to public FPU API; it is really just
> a facility to operate on XSAVE state and does not expose any internal
> details of arch/x86/kernel/fpu.
We don't want to grow _too_ many users of get_xsave_addr() since it's
hard to use it right. But this seems to be a legitimate user.
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
next prev parent reply other threads:[~2024-03-19 20:07 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-18 23:33 [PATCH v4 00/15] KVM: SEV: allow customizing VMSA features Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 01/15] KVM: SVM: Invert handling of SEV and SEV_ES feature flags Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 02/15] KVM: SVM: Compile sev.c if and only if CONFIG_KVM_AMD_SEV=y Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 03/15] KVM: x86: use u64_to_user_addr() Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 04/15] KVM: introduce new vendor op for KVM_GET_DEVICE_ATTR Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 05/15] KVM: SEV: publish supported VMSA features Paolo Bonzini
2024-03-25 23:59 ` Isaku Yamahata
2024-04-04 11:46 ` Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 06/15] KVM: SEV: store VMSA features in kvm_sev_info Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 07/15] KVM: x86: add fields to struct kvm_arch for CoCo features Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 08/15] KVM: x86: Add supported_vm_types to kvm_caps Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 09/15] KVM: SEV: sync FPU and AVX state at LAUNCH_UPDATE_VMSA time Paolo Bonzini
2024-03-19 13:42 ` Michael Roth
2024-03-19 19:47 ` Paolo Bonzini
2024-03-19 20:07 ` Dave Hansen [this message]
2024-03-24 23:39 ` Michael Roth
2024-04-04 11:53 ` Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 10/15] KVM: SEV: introduce to_kvm_sev_info Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 11/15] KVM: SEV: define VM types for SEV and SEV-ES Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 12/15] KVM: SEV: introduce KVM_SEV_INIT2 operation Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 13/15] KVM: SEV: allow SEV-ES DebugSwap again Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 14/15] selftests: kvm: add tests for KVM_SEV_INIT2 Paolo Bonzini
2024-03-18 23:33 ` [PATCH v4 15/15] selftests: kvm: switch to using KVM_X86_*_VM Paolo Bonzini
2024-03-19 2:20 ` [PATCH v4 00/15] KVM: SEV: allow customizing VMSA features Michael Roth
2024-03-19 19:43 ` [PATCH v4 16/15] fixup! KVM: SEV: sync FPU and AVX state at LAUNCH_UPDATE_VMSA time Paolo Bonzini
2024-03-19 19:43 ` [PATCH v4 17/15] selftests: kvm: split "launch" phase of SEV VM creation Paolo Bonzini
2024-03-19 19:43 ` [PATCH v4 18/15] selftests: kvm: add test for transferring FPU state into the VMSA Paolo Bonzini
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