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Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_rmhandlers.S')
-rw-r--r--arch/powerpc/kvm/book3s_hv_rmhandlers.S49
1 files changed, 34 insertions, 15 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index b98889e9851d..3c6badcd53ef 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -150,6 +150,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
cmpwi cr1, r12, BOOK3S_INTERRUPT_MACHINE_CHECK
cmpwi r12, BOOK3S_INTERRUPT_EXTERNAL
beq 11f
+ cmpwi r12, BOOK3S_INTERRUPT_H_DOORBELL
+ beq 15f /* Invoke the H_DOORBELL handler */
cmpwi cr2, r12, BOOK3S_INTERRUPT_HMI
beq cr2, 14f /* HMI check */
@@ -174,6 +176,10 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
mtspr SPRN_HSRR1, r7
b hmi_exception_after_realmode
+15: mtspr SPRN_HSRR0, r8
+ mtspr SPRN_HSRR1, r7
+ ba 0xe80
+
kvmppc_primary_no_guest:
/* We handle this much like a ceded vcpu */
/* put the HDEC into the DEC, since HDEC interrupts don't wake us */
@@ -1743,7 +1749,8 @@ kvmppc_hdsi:
beq 3f
clrrdi r0, r4, 28
PPC_SLBFEE_DOT(R5, R0) /* if so, look up SLB */
- bne 1f /* if no SLB entry found */
+ li r0, BOOK3S_INTERRUPT_DATA_SEGMENT
+ bne 7f /* if no SLB entry found */
4: std r4, VCPU_FAULT_DAR(r9)
stw r6, VCPU_FAULT_DSISR(r9)
@@ -1762,14 +1769,15 @@ kvmppc_hdsi:
cmpdi r3, -2 /* MMIO emulation; need instr word */
beq 2f
- /* Synthesize a DSI for the guest */
+ /* Synthesize a DSI (or DSegI) for the guest */
ld r4, VCPU_FAULT_DAR(r9)
mr r6, r3
-1: mtspr SPRN_DAR, r4
+1: li r0, BOOK3S_INTERRUPT_DATA_STORAGE
mtspr SPRN_DSISR, r6
+7: mtspr SPRN_DAR, r4
mtspr SPRN_SRR0, r10
mtspr SPRN_SRR1, r11
- li r10, BOOK3S_INTERRUPT_DATA_STORAGE
+ mr r10, r0
bl kvmppc_msr_interrupt
fast_interrupt_c_return:
6: ld r7, VCPU_CTR(r9)
@@ -1817,7 +1825,8 @@ kvmppc_hisi:
beq 3f
clrrdi r0, r10, 28
PPC_SLBFEE_DOT(R5, R0) /* if so, look up SLB */
- bne 1f /* if no SLB entry found */
+ li r0, BOOK3S_INTERRUPT_INST_SEGMENT
+ bne 7f /* if no SLB entry found */
4:
/* Search the hash table. */
mr r3, r9 /* vcpu pointer */
@@ -1834,11 +1843,12 @@ kvmppc_hisi:
cmpdi r3, -1 /* handle in kernel mode */
beq guest_exit_cont
- /* Synthesize an ISI for the guest */
+ /* Synthesize an ISI (or ISegI) for the guest */
mr r11, r3
-1: mtspr SPRN_SRR0, r10
+1: li r0, BOOK3S_INTERRUPT_INST_STORAGE
+7: mtspr SPRN_SRR0, r10
mtspr SPRN_SRR1, r11
- li r10, BOOK3S_INTERRUPT_INST_STORAGE
+ mr r10, r0
bl kvmppc_msr_interrupt
b fast_interrupt_c_return
@@ -2377,7 +2387,6 @@ machine_check_realmode:
mr r3, r9 /* get vcpu pointer */
bl kvmppc_realmode_machine_check
nop
- cmpdi r3, 0 /* Did we handle MCE ? */
ld r9, HSTATE_KVM_VCPU(r13)
li r12, BOOK3S_INTERRUPT_MACHINE_CHECK
/*
@@ -2390,13 +2399,18 @@ machine_check_realmode:
* The old code used to return to host for unhandled errors which
* was causing guest to hang with soft lockups inside guest and
* makes it difficult to recover guest instance.
+ *
+ * if we receive machine check with MSR(RI=0) then deliver it to
+ * guest as machine check causing guest to crash.
*/
- ld r10, VCPU_PC(r9)
ld r11, VCPU_MSR(r9)
+ andi. r10, r11, MSR_RI /* check for unrecoverable exception */
+ beq 1f /* Deliver a machine check to guest */
+ ld r10, VCPU_PC(r9)
+ cmpdi r3, 0 /* Did we handle MCE ? */
bne 2f /* Continue guest execution. */
/* If not, deliver a machine check. SRR0/1 are already set */
- li r10, BOOK3S_INTERRUPT_MACHINE_CHECK
- ld r11, VCPU_MSR(r9)
+1: li r10, BOOK3S_INTERRUPT_MACHINE_CHECK
bl kvmppc_msr_interrupt
2: b fast_interrupt_c_return
@@ -2436,14 +2450,19 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
/* hypervisor doorbell */
3: li r12, BOOK3S_INTERRUPT_H_DOORBELL
+
+ /*
+ * Clear the doorbell as we will invoke the handler
+ * explicitly in the guest exit path.
+ */
+ lis r6, (PPC_DBELL_SERVER << (63-36))@h
+ PPC_MSGCLR(6)
/* see if it's a host IPI */
li r3, 1
lbz r0, HSTATE_HOST_IPI(r13)
cmpwi r0, 0
bnelr
- /* if not, clear it and return -1 */
- lis r6, (PPC_DBELL_SERVER << (63-36))@h
- PPC_MSGCLR(6)
+ /* if not, return -1 */
li r3, -1
blr