提交 22cfbb6d 编写于 作者: M Marc Zyngier 提交者: Christoffer Dall

ARM: KVM: clear exclusive monitor on all exception returns

Make sure we clear the exclusive monitor on all exception returns,
which otherwise could lead to lock corruptions.
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NChristoffer Dall <christoffer.dall@linaro.org>
上级 479c5ae2
......@@ -292,6 +292,7 @@ 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
......@@ -441,6 +442,7 @@ guest_trap:
4: pop {r0, r1} @ Failed translation, return to guest
mcrr p15, 0, r0, r1, c7 @ PAR
clrex
pop {r0, r1, r2}
eret
......@@ -467,6 +469,7 @@ switch_to_guest_vfp:
pop {r3-r7}
pop {r0-r2}
clrex
eret
#endif
......
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