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Re: [PATCH v1 0/5] x86/nestedsvm: rework nested VMRUN/VMEXIT handling
- To: chunjie.zhu@xxxxxxxxxx
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 23 Sep 2026 11:36:51 +0200
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- Cc: andrew.cooper3@xxxxxxxxxx, roger@xxxxxxxxxxxxxx, jason.andryuk@xxxxxxx, teddy.astie@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 23 Sep 2026 09:37:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 23.09.2026 11:20, chunjie.zhu@xxxxxxxxxx wrote:
> From: Chunjie Zhu <chunjie.zhu@xxxxxxxxxx>
>
> This series simplifies nested SVM execution by removing pending and
> deferred state from the VMRUN and VMEXIT paths. Nested transitions are
> handled directly by rearranging the state transfer and control flow.
>
> The series also removes obsolete interrupt-window and vCPU-switch handling
> associated with `nv_vmentry_pending`, while updating the relevant assembly
> offsets and nested-SVM data structures.
>
> Patch 1 rearranges VMRUN handling without pending or deferred flags.
> Patch 2 removes code related to `nv_vmentry_pending`.
> Patch 3 rearranges VMEXIT handling without pending or deferred flags.
> Patch 4 update vmcb fields correctly.
> Patch 5 fix issues which cause transition failure.
>
> Chunjie Zhu (5):
> x86/nestedsvm: update vmrun without pending or deferred flag
> x86/nestedsvm: remove nv_vmentry_pending
> x86/nestedsvm: update vmexit without pending or deferred flag
> x86/nestedsvm: update vmcb correctly
> x86/nestedsvm: fix up
This last patch, unless it was meant as an RFC without being marked so,
surely wants a better title and a non-empty description.
Jan
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