Make sure we clear the exclusive movitor on all exception returns,
which otherwise could lead to lock corruptions.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
arch/arm/kvm/interrupts.S | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index 3124e0f..750f051 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -301,6 +301,7 @@ THUMB( orr r2, r2, #PSR_T_BIT )
ldr r2, =BSYM(panic)
msr ELR_hyp, r2
ldr r0, =\panic_str
+ clrex @ Clear exclusive monitor
eret
.endm
@@ -450,6 +451,7 @@ guest_trap:
4: pop {r0, r1} @ Failed translation, return to guest
mcrr p15, 0, r0, r1, c7 @ PAR
+ clrex
pop {r0, r1, r2}
eret
@@ -476,6 +478,7 @@ switch_to_guest_vfp:
pop {r3-r7}
pop {r0-r2}
+ clrex
eret
#endif
--
1.8.2.3
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