From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: <sashiko-reviews@lists.linux.dev>
Cc: <kvm@vger.kernel.org>
Subject: Re: [PATCH v8 02/20] KVM: VMX: Save guest EGPRs in VCPU cache
Date: Thu, 1 Oct 2026 19:57:46 +0000 [thread overview]
Message-ID: <37abe64b-e80b-4c51-b4c7-f3c832157e90@intel.com> (raw)
In-Reply-To: <20260930215626.8BFEA1F000FF@smtp.kernel.org>
On 9/30/2026 2:56 PM, sashiko-bot@kernel.org wrote:
>
> If the host kernel is compiled with APX instructions (which this patch
> prepares for to allow future usage of APX registers in the kernel),
No, this patch does not necessarily prepare for the future EGPRs in the
kernel. This approach may have benefits if it really happens.
Note that commit 63edf5a009ae ("x86/build/64: Prevent native builds from
generating EGPR use") currently in the mainline.
Thanks,
Chang
next prev parent reply other threads:[~2026-10-01 20:24 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-30 21:07 [PATCH v8 00/20] KVM: x86: Enable APX for guests Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 01/20] KVM: x86: Extend VCPU registers for EGPRs Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 02/20] KVM: VMX: Save guest EGPRs in VCPU cache Chang S. Bae
2026-09-30 21:56 ` sashiko-bot
2026-10-01 19:57 ` Chang S. Bae [this message]
2026-09-30 21:07 ` [PATCH v8 03/20] KVM: x86: Support APX state for XSAVE ABI Chang S. Bae
2026-09-30 21:57 ` sashiko-bot
2026-10-01 19:58 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 04/20] KVM: VMX: Refactor VMX instruction information access Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 05/20] KVM: VMX: Refactor instruction information decoding Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 06/20] KVM: VMX: Remove unused control-register access defines Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 07/20] KVM: VMX: Refactor register index retrieval from exit qualification Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 08/20] KVM: VMX: Support instruction information extension Chang S. Bae
2026-09-30 21:52 ` sashiko-bot
2026-10-01 19:58 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 09/20] KVM: nVMX: Propagate extended instruction information Chang S. Bae
2026-09-30 21:52 ` sashiko-bot
2026-10-01 19:58 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 10/20] KVM: x86: Support EGPR accessing and tracking for emulator Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 11/20] KVM: x86: Handle EGPR index and REX2-incompatible opcodes Chang S. Bae
2026-09-30 21:47 ` sashiko-bot
2026-10-01 19:59 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 12/20] KVM: x86: Support REX2-prefixed opcode decode Chang S. Bae
2026-09-30 21:54 ` sashiko-bot
2026-10-01 19:59 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 13/20] KVM: x86: Reject EVEX-prefixed instructions Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 14/20] KVM: x86: Move KVM_SUPPORTED_{XCR0,XSS} into kvm_x86_vendor_init() Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 15/20] KVM: x86: Guard valid XCR0.APX settings Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 16/20] KVM: x86: Add APX to supported XCR0 Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 17/20] KVM: x86: Expose APX foundation feature to userspace Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 18/20] KVM: x86: Expose APX sub-features " Chang S. Bae
2026-09-30 21:43 ` sashiko-bot
2026-10-01 20:00 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 19/20] KVM: x86: selftests: Add APX state and ABI test Chang S. Bae
2026-09-30 21:48 ` sashiko-bot
2026-10-01 19:59 ` Chang S. Bae
2026-09-30 21:07 ` [PATCH v8 20/20] KVM: x86: selftests: Add APX state handling and XCR0 sanity checks Chang S. Bae
2026-10-01 20:29 ` [PATCH v8 00/20] KVM: x86: Enable APX for guests Chang S. Bae
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