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FROMGIT: KVM: arm64: nVHE: Simplify invalid_host_el2_vect

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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.

Bug: 278010198
Bug: 278749606
(cherry picked from commit 6e3b773ed6
 https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git )
Change-Id: Ibe5664ed3155720edbf23438b76a8316fb734209
Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20240610063244.2828978-4-ptosi@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Pierre-Clément Tosi 2024-06-10 07:32:32 +01:00 committed by Will Deacon
parent 9dd9c0ecc8
commit 406d5af44a
1 changed files with 0 additions and 6 deletions
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6
arch/arm64/kvm/hyp/nvhe/host.S
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@ -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