KVM: arm64: Set IL in fake ESR for pKVM memory sharing exit

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__pkvm_memshare_page_req() constructs a fake DABT ESR_EL2 to exit to
the host without setting IL. The ESR has ISV=0, so IL must be 1 per the
architecture. The host does not read IL on this path, but the
constructed syndrome should still be architecturally valid.

Set ESR_ELx_IL.

Fixes: 03313efed5 ("KVM: arm64: Implement the MEM_SHARE hypercall for protected VMs")
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://patch.msgid.link/20260618121643.4105064-8-tabba@google.com
Signed-off-by: Marc Zyngier <maz@kernel.org>

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Fuad Tabba 2026-06-18 13:16:43 +01:00 • committed by Marc Zyngier

parent a69412287a

commit cbe2278aa3

1 changed files with 2 additions and 1 deletions

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arch/arm64/kvm/hyp/nvhe/pkvm.c

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