On Wed, Aug 05, 2026 at 05:48:04PM +0800, Yao Yuan wrote: > On Mon, Aug 03, 2026 at 11:56:48PM +0800, Mark Brown wrote:
> >
> > if (ctxt_has_s1poe(&vcpu->arch.ctxt))
> > write_sysreg_el1(__vcpu_sys_reg(vcpu, POR_EL2),
> > SYS_POR);
> > +
> > + if (ctxt_has_gcs(&vcpu->arch.ctxt)) {
> > + write_sysreg_el1(__vcpu_sys_reg(vcpu, GCSCR_EL2),
> > SYS_GCSCR);
> > + write_sysreg_el1(__vcpu_sys_reg(vcpu, GCSPR_EL2),
> > SYS_GCSPR);
> > + }
> Looks the s1pie checking for GCS vEL2 context switch is
> necessary yet IIUC, KVM does vEL2 context switch for nested
> L1's EL2, it should follow same rule as non-nested L1's EL1
> context switch.
Right, it's not really needed in either case but hopefully helps code
generation a bit. Thanks for spotting that.
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