xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

kvm: ppc: bookehv: Save restore SPRN_SPRG9 on guest entry exit

Browse Source 
SPRN_SPRG is used by debug interrupt handler, so this is required for
debug support.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Bharat Bhushan
2014-07-21 11:23:26 +05:30
committed by Alexander Graf
parent f5250471b2
commit 99e99d19a8
3 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
arch/powerpc/kvm/bookehv_interrupts.S
View File

@@ -398,6 +398,7 @@ _GLOBAL(kvmppc_resume_host)
#ifdef CONFIG_64BIT
PPC_LL r3, PACA_SPRG_VDSO(r13)
#endif
mfspr r5, SPRN_SPRG9
PPC_STD(r6, VCPU_SHARED_SPRG4, r11)
mfspr r8, SPRN_SPRG6
PPC_STD(r7, VCPU_SHARED_SPRG5, r11)
@@ -405,6 +406,7 @@ _GLOBAL(kvmppc_resume_host)
#ifdef CONFIG_64BIT
mtspr SPRN_SPRG_VDSO_WRITE, r3
#endif
PPC_STD(r5, VCPU_SPRG9, r4)
PPC_STD(r8, VCPU_SHARED_SPRG6, r11)
mfxer r3
PPC_STD(r9, VCPU_SHARED_SPRG7, r11)
@@ -639,7 +641,9 @@ lightweight_exit:
mtspr SPRN_SPRG5W, r6
PPC_LD(r8, VCPU_SHARED_SPRG7, r11)
mtspr SPRN_SPRG6W, r7
PPC_LD(r5, VCPU_SPRG9, r4)
mtspr SPRN_SPRG7W, r8
mtspr SPRN_SPRG9, r5
/* Load some guest volatiles. */
PPC_LL r3, VCPU_LR(r4)