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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-03-02 20:12:54 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-03-02 20:12:54 -0800
commit17b02809cfa77abcab155ce3afbb1467e7f0744f (patch)
tree4bb7b08fa29e73fb29a8e56fec766643b1eaa82e /arch/arm/kvm/interrupts.S
parent9cd02bd876d3b1a5a93f0c9376f578bde03a6b26 (diff)
parent0414855fdc4a40da05221fc6062cccbc0c30f169 (diff)
downloadop-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.zip
op-kernel-dev-17b02809cfa77abcab155ce3afbb1467e7f0744f.tar.gz
Merge 3.14-rc5 into staging-next
We want those fixes in here
Diffstat (limited to 'arch/arm/kvm/interrupts.S')
-rw-r--r--arch/arm/kvm/interrupts.S11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index ddc1553..0d68d40 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -220,6 +220,10 @@ after_vfp_restore:
* in Hyp mode (see init_hyp_mode in arch/arm/kvm/arm.c). Return values are
* passed in r0 and r1.
*
+ * A function pointer with a value of 0xffffffff has a special meaning,
+ * and is used to implement __hyp_get_vectors in the same way as in
+ * arch/arm/kernel/hyp_stub.S.
+ *
* The calling convention follows the standard AAPCS:
* r0 - r3: caller save
* r12: caller save
@@ -363,6 +367,11 @@ hyp_hvc:
host_switch_to_hyp:
pop {r0, r1, r2}
+ /* Check for __hyp_get_vectors */
+ cmp r0, #-1
+ mrceq p15, 4, r0, c12, c0, 0 @ get HVBAR
+ beq 1f
+
push {lr}
mrs lr, SPSR
push {lr}
@@ -378,7 +387,7 @@ THUMB( orr lr, #1)
pop {lr}
msr SPSR_csxf, lr
pop {lr}
- eret
+1: eret
guest_trap:
load_vcpu @ Load VCPU pointer to r0
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