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Diffstat (limited to 'arch/powerpc/kvm/book3s_pr.c')
-rw-r--r--arch/powerpc/kvm/book3s_pr.c82
1 files changed, 42 insertions, 40 deletions
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 34a801c3604a..83bcdc80ce51 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -137,12 +137,15 @@ static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max;
svcpu->in_use = 0;
svcpu_put(svcpu);
-#endif
/* Disable AIL if supported */
- if (cpu_has_feature(CPU_FTR_HVMODE) &&
- cpu_has_feature(CPU_FTR_ARCH_207S))
- mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~LPCR_AIL);
+ if (cpu_has_feature(CPU_FTR_HVMODE)) {
+ if (cpu_has_feature(CPU_FTR_ARCH_207S))
+ mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~LPCR_AIL);
+ if (cpu_has_feature(CPU_FTR_ARCH_300) && (current->thread.fscr & FSCR_SCV))
+ mtspr(SPRN_FSCR, mfspr(SPRN_FSCR) & ~FSCR_SCV);
+ }
+#endif
vcpu->cpu = smp_processor_id();
#ifdef CONFIG_PPC_BOOK3S_32
@@ -165,6 +168,14 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb));
to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max;
svcpu_put(svcpu);
+
+ /* Enable AIL if supported */
+ if (cpu_has_feature(CPU_FTR_HVMODE)) {
+ if (cpu_has_feature(CPU_FTR_ARCH_207S))
+ mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) | LPCR_AIL_3);
+ if (cpu_has_feature(CPU_FTR_ARCH_300) && (current->thread.fscr & FSCR_SCV))
+ mtspr(SPRN_FSCR, mfspr(SPRN_FSCR) | FSCR_SCV);
+ }
#endif
if (kvmppc_is_split_real(vcpu))
@@ -174,11 +185,6 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
kvmppc_save_tm_pr(vcpu);
- /* Enable AIL if supported */
- if (cpu_has_feature(CPU_FTR_HVMODE) &&
- cpu_has_feature(CPU_FTR_ARCH_207S))
- mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) | LPCR_AIL_3);
-
vcpu->cpu = -1;
}
@@ -455,12 +461,6 @@ static bool kvm_test_age_gfn_pr(struct kvm *kvm, struct kvm_gfn_range *range)
return false;
}
-static bool kvm_set_spte_gfn_pr(struct kvm *kvm, struct kvm_gfn_range *range)
-{
- /* The page will get remapped properly on its next fault */
- return do_kvm_unmap_gfn(kvm, range);
-}
-
/*****************************************/
static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr)
@@ -493,7 +493,6 @@ static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr)
if (msr & MSR_POW) {
if (!vcpu->arch.pending_exceptions) {
kvm_vcpu_halt(vcpu);
- kvm_clear_request(KVM_REQ_UNHALT, vcpu);
vcpu->stat.generic.halt_wakeup++;
/* Unset POW bit after we woke up */
@@ -599,6 +598,7 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
case PVR_POWER8:
case PVR_POWER8E:
case PVR_POWER8NVL:
+ case PVR_HX_C2000:
case PVR_POWER9:
vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE |
BOOK3S_HFLAG_NEW_TLBIE;
@@ -639,29 +639,27 @@ static void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
*/
static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
{
- struct page *hpage;
+ struct kvm_host_map map;
u64 hpage_offset;
u32 *page;
- int i;
+ int i, r;
- hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
- if (is_error_page(hpage))
+ r = kvm_vcpu_map(vcpu, pte->raddr >> PAGE_SHIFT, &map);
+ if (r)
return;
hpage_offset = pte->raddr & ~PAGE_MASK;
hpage_offset &= ~0xFFFULL;
hpage_offset /= 4;
- get_page(hpage);
- page = kmap_atomic(hpage);
+ page = map.hva;
/* patch dcbz into reserved instruction, so we trap */
for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++)
if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ)
page[i] &= cpu_to_be32(0xfffffff7);
- kunmap_atomic(page);
- put_page(hpage);
+ kvm_vcpu_unmap(vcpu, &map);
}
static bool kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
@@ -754,7 +752,7 @@ static int kvmppc_handle_pagefault(struct kvm_vcpu *vcpu,
flags = DSISR_NOHPTE;
if (data) {
flags |= vcpu->arch.fault_dsisr & DSISR_ISSTORE;
- kvmppc_core_queue_data_storage(vcpu, eaddr, flags);
+ kvmppc_core_queue_data_storage(vcpu, 0, eaddr, flags);
} else {
kvmppc_core_queue_inst_storage(vcpu, flags);
}
@@ -1037,6 +1035,10 @@ static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac)
void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr)
{
+ if (fscr & FSCR_SCV)
+ fscr &= ~FSCR_SCV; /* SCV must not be enabled */
+ /* Prohibit prefixed instructions for now */
+ fscr &= ~FSCR_PREFIX;
if ((vcpu->arch.fscr & FSCR_TAR) && !(fscr & FSCR_TAR)) {
/* TAR got dropped, drop it in shadow too */
kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
@@ -1072,7 +1074,7 @@ static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
{
enum emulation_result er;
ulong flags;
- u32 last_inst;
+ ppc_inst_t last_inst;
int emul, r;
/*
@@ -1093,9 +1095,9 @@ static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
if (kvmppc_get_msr(vcpu) & MSR_PR) {
#ifdef EXIT_DEBUG
pr_info("Userspace triggered 0x700 exception at\n 0x%lx (0x%x)\n",
- kvmppc_get_pc(vcpu), last_inst);
+ kvmppc_get_pc(vcpu), ppc_inst_val(last_inst));
#endif
- if ((last_inst & 0xff0007ff) != (INS_DCBZ & 0xfffffff7)) {
+ if ((ppc_inst_val(last_inst) & 0xff0007ff) != (INS_DCBZ & 0xfffffff7)) {
kvmppc_core_queue_program(vcpu, flags);
return RESUME_GUEST;
}
@@ -1112,7 +1114,7 @@ static int kvmppc_exit_pr_progint(struct kvm_vcpu *vcpu, unsigned int exit_nr)
break;
case EMULATE_FAIL:
pr_crit("%s: emulation at %lx failed (%08x)\n",
- __func__, kvmppc_get_pc(vcpu), last_inst);
+ __func__, kvmppc_get_pc(vcpu), ppc_inst_val(last_inst));
kvmppc_core_queue_program(vcpu, flags);
r = RESUME_GUEST;
break;
@@ -1229,7 +1231,7 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
r = kvmppc_handle_pagefault(vcpu, dar, exit_nr);
srcu_read_unlock(&vcpu->kvm->srcu, idx);
} else {
- kvmppc_core_queue_data_storage(vcpu, dar, fault_dsisr);
+ kvmppc_core_queue_data_storage(vcpu, 0, dar, fault_dsisr);
r = RESUME_GUEST;
}
break;
@@ -1274,12 +1276,12 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
break;
case BOOK3S_INTERRUPT_SYSCALL:
{
- u32 last_sc;
+ ppc_inst_t last_sc;
int emul;
/* Get last sc for papr */
if (vcpu->arch.papr_enabled) {
- /* The sc instuction points SRR0 to the next inst */
+ /* The sc instruction points SRR0 to the next inst */
emul = kvmppc_get_last_inst(vcpu, INST_SC, &last_sc);
if (emul != EMULATE_DONE) {
kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) - 4);
@@ -1289,7 +1291,7 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
}
if (vcpu->arch.papr_enabled &&
- (last_sc == 0x44000022) &&
+ (ppc_inst_val(last_sc) == 0x44000022) &&
!(kvmppc_get_msr(vcpu) & MSR_PR)) {
/* SC 1 papr hypercalls */
ulong cmd = kvmppc_get_gpr(vcpu, 3);
@@ -1341,7 +1343,7 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
{
int ext_msr = 0;
int emul;
- u32 last_inst;
+ ppc_inst_t last_inst;
if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) {
/* Do paired single instruction emulation */
@@ -1375,15 +1377,15 @@ int kvmppc_handle_exit_pr(struct kvm_vcpu *vcpu, unsigned int exit_nr)
}
case BOOK3S_INTERRUPT_ALIGNMENT:
{
- u32 last_inst;
+ ppc_inst_t last_inst;
int emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
if (emul == EMULATE_DONE) {
u32 dsisr;
u64 dar;
- dsisr = kvmppc_alignment_dsisr(vcpu, last_inst);
- dar = kvmppc_alignment_dar(vcpu, last_inst);
+ dsisr = kvmppc_alignment_dsisr(vcpu, ppc_inst_val(last_inst));
+ dar = kvmppc_alignment_dar(vcpu, ppc_inst_val(last_inst));
kvmppc_set_dsisr(vcpu, dsisr);
kvmppc_set_dar(vcpu, dar);
@@ -2035,8 +2037,8 @@ static int kvmppc_core_check_processor_compat_pr(void)
return 0;
}
-static long kvm_arch_vm_ioctl_pr(struct file *filp,
- unsigned int ioctl, unsigned long arg)
+static int kvm_arch_vm_ioctl_pr(struct file *filp,
+ unsigned int ioctl, unsigned long arg)
{
return -ENOTTY;
}
@@ -2061,7 +2063,6 @@ static struct kvmppc_ops kvm_ops_pr = {
.unmap_gfn_range = kvm_unmap_gfn_range_pr,
.age_gfn = kvm_age_gfn_pr,
.test_age_gfn = kvm_test_age_gfn_pr,
- .set_spte_gfn = kvm_set_spte_gfn_pr,
.free_memslot = kvmppc_core_free_memslot_pr,
.init_vm = kvmppc_core_init_vm_pr,
.destroy_vm = kvmppc_core_destroy_vm_pr,
@@ -2108,6 +2109,7 @@ void kvmppc_book3s_exit_pr(void)
module_init(kvmppc_book3s_init_pr);
module_exit(kvmppc_book3s_exit_pr);
+MODULE_DESCRIPTION("KVM on Book3S without using hypervisor mode");
MODULE_LICENSE("GPL");
MODULE_ALIAS_MISCDEV(KVM_MINOR);
MODULE_ALIAS("devname:kvm");
generated by cgit (git 2.34.1) at 2025-12-26 13:39:19 +0000