| Message ID | 20240610063244.2828978-4-ptosi@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: arm64: Add support for hypervisor kCFI | expand |
On Mon, Jun 10, 2024 at 07:32:32AM +0100, Pierre-Clément Tosi wrote: > The invalid_host_el2_vect macro is used by EL2{t,h} handlers in nVHE > *host* context, which should never run with a guest context loaded. > Therefore, remove the superfluous vCPU context check and branch > unconditionally to hyp_panic. > > Signed-off-by: Pierre-Clément Tosi <ptosi@google.com> > --- > arch/arm64/kvm/hyp/nvhe/host.S | 6 ------ > 1 file changed, 6 deletions(-) Acked-by: Will Deacon <will@kernel.org> Will
diff --git a/arch/arm64/kvm/hyp/nvhe/host.S b/arch/arm64/kvm/hyp/nvhe/host.S index 135cfb294ee5..3d610fc51f4d 100644 --- a/arch/arm64/kvm/hyp/nvhe/host.S +++ b/arch/arm64/kvm/hyp/nvhe/host.S @@ -197,12 +197,6 @@ SYM_FUNC_END(__host_hvc) sub x0, sp, x0 // x0'' = sp' - x0' = (sp + x0) - sp = x0 sub sp, sp, x0 // sp'' = sp' - x0 = (sp + x0) - x0 = sp - /* If a guest is loaded, panic out of it. */ - stp x0, x1, [sp, #-16]! - get_loaded_vcpu x0, x1 - cbnz x0, __guest_exit_panic - add sp, sp, #16 - /* * The panic may not be clean if the exception is taken before the host * context has been saved by __host_exit or after the hyp context has
The invalid_host_el2_vect macro is used by EL2{t,h} handlers in nVHE *host* context, which should never run with a guest context loaded. Therefore, remove the superfluous vCPU context check and branch unconditionally to hyp_panic. Signed-off-by: Pierre-Clément Tosi <ptosi@google.com> --- arch/arm64/kvm/hyp/nvhe/host.S | 6 ------ 1 file changed, 6 deletions(-)