KVM: arm64: Only emulate an SError's entry for vCPUs with NV

kvm_inject_serror_esr() emulates an SError's exception entry when the
host's copy of PSTATE says SErrors are unmasked, although only NV needs
this, for a nested context whose guest hypervisor owns the vSError. A
protected vCPU's PSTATE lives at EL2, and the VMM can unmask SErrors in
the host's copy before the first run, so KVM emulates the entry on that
copy and the guest never takes the SError.

Emulate the entry only for a vCPU with NV, which protected VMs don't
support, and otherwise pend the SError through HCR_EL2.VSE, as KVM did
before commit ce66109cec867 ("KVM: arm64: nv: Take "masked" aborts to
EL2 when HCRX_EL2.TMEA is set").

Fixes: 872383bd12e11 ("KVM: arm64: Add per-EC entry/exit state marshalling for protected guests")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20261001142109.794CA1F000FF@smtp.kernel.org/
Suggested-by: Oliver Upton <oupton@kernel.org>
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Link: https://patch.msgid.link/20261007080833.371899-1-fuad.tabba@linux.dev
Signed-off-by: Marc Zyngier <maz@kernel.org>

0 files changed, 0 insertions, 0 deletions