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KVM: PPC: Book3S HV: Set SRR1[PREFIX] bit on injected interrupts 

Pass the hypervisor (H)SRR1[PREFIX] indication through to synchronous
interrupts injected into the guest.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230330103224.3589928-3-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2023-03-30 20:32:24 +10:00 committed by Michael Ellerman
parent 460ba21d83
commit 6cd5c1db99
5 changed files with 38 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/powerpc/kvm/book3s_64_mmu_radix.c
View File

@ -954,7 +954,9 @@ int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
if (dsisr & DSISR_BADACCESS) {
/* Reflect to the guest as DSI */
pr_err("KVM: Got radix HV page fault with DSISR=%lx\n", dsisr);
kvmppc_core_queue_data_storage(vcpu, 0, ea, dsisr);
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
ea, dsisr);
return RESUME_GUEST;
}
@ -979,7 +981,9 @@ int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
* Bad address in guest page table tree, or other
* unusual error - reflect it to the guest as DSI.
*/
kvmppc_core_queue_data_storage(vcpu, 0, ea, dsisr);
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
ea, dsisr);
return RESUME_GUEST;
}
return kvmppc_hv_emulate_mmio(vcpu, gpa, ea, writing);
@ -988,8 +992,9 @@ int kvmppc_book3s_radix_page_fault(struct kvm_vcpu *vcpu,
if (memslot->flags & KVM_MEM_READONLY) {
if (writing) {
/* give the guest a DSI */
kvmppc_core_queue_data_storage(vcpu, 0, ea,
DSISR_ISSTORE | DSISR_PROTFAULT);
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
ea, DSISR_ISSTORE | DSISR_PROTFAULT);
return RESUME_GUEST;
}
kvm_ro = true;

27
arch/powerpc/kvm/book3s_hv.c
View File

@ -1428,7 +1428,8 @@ static int kvmppc_emulate_debug_inst(struct kvm_vcpu *vcpu)
vcpu->run->debug.arch.address = kvmppc_get_pc(vcpu);
return RESUME_HOST;
} else {
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
return RESUME_GUEST;
}
}
@ -1630,7 +1631,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
* so that it knows that the machine check occurred.
*/
if (!vcpu->kvm->arch.fwnmi_enabled) {
ulong flags = vcpu->arch.shregs.msr & 0x083c0000;
ulong flags = (vcpu->arch.shregs.msr & 0x083c0000) |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
kvmppc_core_queue_machine_check(vcpu, flags);
r = RESUME_GUEST;
break;
@ -1659,7 +1661,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
* as a result of a hypervisor emulation interrupt
* (e40) getting turned into a 700 by BML RTAS.
*/
flags = vcpu->arch.shregs.msr & 0x1f0000ull;
flags = (vcpu->arch.shregs.msr & 0x1f0000ull) |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
kvmppc_core_queue_program(vcpu, flags);
r = RESUME_GUEST;
break;
@ -1739,7 +1742,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
}
if (!(vcpu->arch.fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT))) {
kvmppc_core_queue_data_storage(vcpu, 0,
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
r = RESUME_GUEST;
break;
@ -1757,7 +1761,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
} else if (err == -1 || err == -2) {
r = RESUME_PAGE_FAULT;
} else {
kvmppc_core_queue_data_storage(vcpu, 0,
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
vcpu->arch.fault_dar, err);
r = RESUME_GUEST;
}
@ -1785,7 +1790,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
if (!(vcpu->arch.fault_dsisr & SRR1_ISI_NOPT)) {
kvmppc_core_queue_inst_storage(vcpu,
vcpu->arch.fault_dsisr);
vcpu->arch.fault_dsisr |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
r = RESUME_GUEST;
break;
}
@ -1802,7 +1808,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
} else if (err == -1) {
r = RESUME_PAGE_FAULT;
} else {
kvmppc_core_queue_inst_storage(vcpu, err);
kvmppc_core_queue_inst_storage(vcpu,
err | (kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
r = RESUME_GUEST;
}
break;
@ -1823,7 +1830,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) {
r = kvmppc_emulate_debug_inst(vcpu);
} else {
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
r = RESUME_GUEST;
}
break;
@ -1864,7 +1872,8 @@ static int kvmppc_handle_exit_hv(struct kvm_vcpu *vcpu,
r = kvmppc_tm_unavailable(vcpu);
}
if (r == EMULATE_FAIL) {
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
kvmppc_core_queue_program(vcpu, SRR1_PROGILL |
(kvmppc_get_msr(vcpu) & SRR1_PREFIXED));
r = RESUME_GUEST;
}
break;

9
arch/powerpc/kvm/book3s_hv_nested.c
View File

@ -1560,7 +1560,9 @@ static long int __kvmhv_nested_page_fault(struct kvm_vcpu *vcpu,
if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID)) {
if (dsisr & (DSISR_PRTABLE_FAULT | DSISR_BADACCESS)) {
/* unusual error -> reflect to the guest as a DSI */
kvmppc_core_queue_data_storage(vcpu, 0, ea, dsisr);
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
ea, dsisr);
return RESUME_GUEST;
}
@ -1570,8 +1572,9 @@ static long int __kvmhv_nested_page_fault(struct kvm_vcpu *vcpu,
if (memslot->flags & KVM_MEM_READONLY) {
if (writing) {
/* Give the guest a DSI */
kvmppc_core_queue_data_storage(vcpu, 0, ea,
DSISR_ISSTORE | DSISR_PROTFAULT);
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
ea, DSISR_ISSTORE | DSISR_PROTFAULT);
return RESUME_GUEST;
}
kvm_ro = true;

6
arch/powerpc/kvm/emulate_loadstore.c
View File

@ -28,7 +28,7 @@
static bool kvmppc_check_fp_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_FP)) {
kvmppc_core_queue_fpunavail(vcpu, 0);
kvmppc_core_queue_fpunavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}
@ -40,7 +40,7 @@ static bool kvmppc_check_fp_disabled(struct kvm_vcpu *vcpu)
static bool kvmppc_check_vsx_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_VSX)) {
kvmppc_core_queue_vsx_unavail(vcpu, 0);
kvmppc_core_queue_vsx_unavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}
@ -52,7 +52,7 @@ static bool kvmppc_check_vsx_disabled(struct kvm_vcpu *vcpu)
static bool kvmppc_check_altivec_disabled(struct kvm_vcpu *vcpu)
{
if (!(kvmppc_get_msr(vcpu) & MSR_VEC)) {
kvmppc_core_queue_vec_unavail(vcpu, 0);
kvmppc_core_queue_vec_unavail(vcpu, kvmppc_get_msr(vcpu) & SRR1_PREFIXED);
return true;
}

3
arch/powerpc/kvm/powerpc.c
View File

@ -321,7 +321,8 @@ int kvmppc_emulate_mmio(struct kvm_vcpu *vcpu)
if (vcpu->mmio_is_write)
dsisr |= DSISR_ISSTORE;
kvmppc_core_queue_data_storage(vcpu, 0,
kvmppc_core_queue_data_storage(vcpu,
kvmppc_get_msr(vcpu) & SRR1_PREFIXED,
vcpu->arch.vaddr_accessed, dsisr);
} else {
/*