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Diffstat (limited to 'arch/powerpc/kvm/booke_interrupts.S')
-rw-r--r--arch/powerpc/kvm/booke_interrupts.S72
1 files changed, 24 insertions, 48 deletions
diff --git a/arch/powerpc/kvm/booke_interrupts.S b/arch/powerpc/kvm/booke_interrupts.S
index 95e165baf85f..084ebcd7dd83 100644
--- a/arch/powerpc/kvm/booke_interrupts.S
+++ b/arch/powerpc/kvm/booke_interrupts.S
@@ -107,6 +107,18 @@ _GLOBAL(kvmppc_resume_host)
li r6, 1
slw r6, r6, r5
+#ifdef CONFIG_KVM_EXIT_TIMING
+ /* save exit time */
+1:
+ mfspr r7, SPRN_TBRU
+ mfspr r8, SPRN_TBRL
+ mfspr r9, SPRN_TBRU
+ cmpw r9, r7
+ bne 1b
+ stw r8, VCPU_TIMING_EXIT_TBL(r4)
+ stw r9, VCPU_TIMING_EXIT_TBU(r4)
+#endif
+
/* Save the faulting instruction and all GPRs for emulation. */
andi. r7, r6, NEED_INST_MASK
beq ..skip_inst_copy
@@ -335,54 +347,6 @@ lightweight_exit:
lwz r3, VCPU_SHADOW_PID(r4)
mtspr SPRN_PID, r3
- /* Prevent all asynchronous TLB updates. */
- mfmsr r5
- lis r6, (MSR_EE|MSR_CE|MSR_ME|MSR_DE)@h
- ori r6, r6, (MSR_EE|MSR_CE|MSR_ME|MSR_DE)@l
- andc r6, r5, r6
- mtmsr r6
-
- /* Load the guest mappings, leaving the host's "pinned" kernel mappings
- * in place. */
- mfspr r10, SPRN_MMUCR /* Save host MMUCR. */
- li r5, PPC44x_TLB_SIZE
- lis r5, tlb_44x_hwater@ha
- lwz r5, tlb_44x_hwater@l(r5)
- mtctr r5
- addi r9, r4, VCPU_SHADOW_TLB
- addi r5, r4, VCPU_SHADOW_MOD
- li r3, 0
-1:
- lbzx r7, r3, r5
- cmpwi r7, 0
- beq 3f
-
- /* Load guest entry. */
- mulli r11, r3, TLBE_BYTES
- add r11, r11, r9
- lwz r7, 0(r11)
- mtspr SPRN_MMUCR, r7
- lwz r7, 4(r11)
- tlbwe r7, r3, PPC44x_TLB_PAGEID
- lwz r7, 8(r11)
- tlbwe r7, r3, PPC44x_TLB_XLAT
- lwz r7, 12(r11)
- tlbwe r7, r3, PPC44x_TLB_ATTRIB
-3:
- addi r3, r3, 1 /* Increment index. */
- bdnz 1b
-
- mtspr SPRN_MMUCR, r10 /* Restore host MMUCR. */
-
- /* Clear bitmap of modified TLB entries */
- li r5, PPC44x_TLB_SIZE>>2
- mtctr r5
- addi r5, r4, VCPU_SHADOW_MOD - 4
- li r6, 0
-1:
- stwu r6, 4(r5)
- bdnz 1b
-
iccci 0, 0 /* XXX hack */
/* Load some guest volatiles. */
@@ -423,6 +387,18 @@ lightweight_exit:
lwz r3, VCPU_SPRG7(r4)
mtspr SPRN_SPRG7, r3
+#ifdef CONFIG_KVM_EXIT_TIMING
+ /* save enter time */
+1:
+ mfspr r6, SPRN_TBRU
+ mfspr r7, SPRN_TBRL
+ mfspr r8, SPRN_TBRU
+ cmpw r8, r6
+ bne 1b
+ stw r7, VCPU_TIMING_LAST_ENTER_TBL(r4)
+ stw r8, VCPU_TIMING_LAST_ENTER_TBU(r4)
+#endif
+
/* Finish loading guest volatiles and jump to guest. */
lwz r3, VCPU_CTR(r4)
mtctr r3