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authorOlof Johansson <olof@lixom.net>2014-05-05 23:18:49 +0200
committerOlof Johansson <olof@lixom.net>2014-05-05 23:18:49 +0200
commit186a73dc9a81b087d0708f21a990615957ec9c1c (patch)
treea1db8d517665fb27f25d44eacacd4b80a0d540ed /arch/arm/kvm/interrupts.S
parentMerge tag 'versatile-leds' of git://git.kernel.org/pub/scm/linux/kernel/git/l... (diff)
parentARM: qcom: clean-up unneeded kconfig selects (diff)
downloadlinux-186a73dc9a81b087d0708f21a990615957ec9c1c.tar.xz
linux-186a73dc9a81b087d0708f21a990615957ec9c1c.zip
Merge tag 'kconfig-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next/cleanup
Merge Kconfig cleanups from Rob Herring: Several mach kconfig clean-ups of redundant selects * tag 'kconfig-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: ARM: qcom: clean-up unneeded kconfig selects ARM: bcm: clean-up unneeded kconfig selects ARM: mvebu: clean-up unneeded kconfig selects + Linux 3.15-rc2 Signed-off-by: Olof Johansson <olof@lixom.net>
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 ddc15539bad2..0d68d4073068 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