Merge branch 'kvm-ppchv-next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-next
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 83851aa..bb1e38a2 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -304,6 +304,11 @@
return vcpu->arch.fault_dar;
}
+static inline bool is_kvmppc_resume_guest(int r)
+{
+ return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
+}
+
/* Magic register values loaded into r3 and r4 before the 'sc' assembly
* instruction for the OSI hypercalls */
#define OSI_SC_MAGIC_R3 0x113724FA
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h
index bf0fa8b0a..51388be 100644
--- a/arch/powerpc/include/asm/kvm_book3s_64.h
+++ b/arch/powerpc/include/asm/kvm_book3s_64.h
@@ -289,6 +289,18 @@
if (atomic_read(&kvm->arch.hpte_mod_interest))
rev->guest_rpte |= HPTE_GR_MODIFIED;
}
+
+/*
+ * Like kvm_memslots(), but for use in real mode when we can't do
+ * any RCU stuff (since the secondary threads are offline from the
+ * kernel's point of view), and we can't print anything.
+ * Thus we use rcu_dereference_raw() rather than rcu_dereference_check().
+ */
+static inline struct kvm_memslots *kvm_memslots_raw(struct kvm *kvm)
+{
+ return rcu_dereference_raw_notrace(kvm->memslots);
+}
+
#endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */
#endif /* __ASM_KVM_BOOK3S_64_H__ */
diff --git a/arch/powerpc/include/asm/kvm_book3s_asm.h b/arch/powerpc/include/asm/kvm_book3s_asm.h
index f3a91dc..821725c 100644
--- a/arch/powerpc/include/asm/kvm_book3s_asm.h
+++ b/arch/powerpc/include/asm/kvm_book3s_asm.h
@@ -94,7 +94,7 @@
unsigned long xics_phys;
u32 saved_xirr;
u64 dabr;
- u64 host_mmcr[3];
+ u64 host_mmcr[7]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
u32 host_pmc[8];
u64 host_purr;
u64 host_spurr;
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index fcd53f0..4096f16 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -129,6 +129,8 @@
struct kvm_create_spapr_tce *args);
extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba, unsigned long tce);
+extern long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
+ unsigned long ioba);
extern struct kvm_rma_info *kvm_alloc_rma(void);
extern void kvm_release_rma(struct kvm_rma_info *ri);
extern struct page *kvm_alloc_hpt(unsigned long nr_pages);
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 90c06ec..ce17815 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -213,6 +213,7 @@
#define SPRN_ACOP 0x1F /* Available Coprocessor Register */
#define SPRN_TFIAR 0x81 /* Transaction Failure Inst Addr */
#define SPRN_TEXASR 0x82 /* Transaction EXception & Summary */
+#define TEXASR_FS __MASK(63-36) /* Transaction Failure Summary */
#define SPRN_TEXASRU 0x83 /* '' '' '' Upper 32 */
#define SPRN_TFHAR 0x80 /* Transaction Failure Handler Addr */
#define SPRN_CTRLF 0x088
diff --git a/arch/powerpc/include/asm/tm.h b/arch/powerpc/include/asm/tm.h
index 0c9f8b7..c22d704 100644
--- a/arch/powerpc/include/asm/tm.h
+++ b/arch/powerpc/include/asm/tm.h
@@ -7,6 +7,8 @@
#include <uapi/asm/tm.h>
+#ifndef __ASSEMBLY__
+
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
extern void do_load_up_transact_fpu(struct thread_struct *thread);
extern void do_load_up_transact_altivec(struct thread_struct *thread);
@@ -21,3 +23,5 @@
extern void tm_abort(uint8_t cause);
extern void tm_save_sprs(struct thread_struct *thread);
extern void tm_restore_sprs(struct thread_struct *thread);
+
+#endif /* __ASSEMBLY__ */
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index 303ece7..fb25ebc 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -262,7 +262,14 @@
static void kvmppc_mmu_book3s_64_hv_reset_msr(struct kvm_vcpu *vcpu)
{
- kvmppc_set_msr(vcpu, vcpu->arch.intr_msr);
+ unsigned long msr = vcpu->arch.intr_msr;
+
+ /* If transactional, change to suspend mode on IRQ delivery */
+ if (MSR_TM_TRANSACTIONAL(vcpu->arch.shregs.msr))
+ msr |= MSR_TS_S;
+ else
+ msr |= vcpu->arch.shregs.msr & MSR_TS_MASK;
+ kvmppc_set_msr(vcpu, msr);
}
/*
diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c
index 2c25f54..89e96b3 100644
--- a/arch/powerpc/kvm/book3s_64_vio_hv.c
+++ b/arch/powerpc/kvm/book3s_64_vio_hv.c
@@ -75,3 +75,31 @@
return H_TOO_HARD;
}
EXPORT_SYMBOL_GPL(kvmppc_h_put_tce);
+
+long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
+ unsigned long ioba)
+{
+ struct kvm *kvm = vcpu->kvm;
+ struct kvmppc_spapr_tce_table *stt;
+
+ list_for_each_entry(stt, &kvm->arch.spapr_tce_tables, list) {
+ if (stt->liobn == liobn) {
+ unsigned long idx = ioba >> SPAPR_TCE_SHIFT;
+ struct page *page;
+ u64 *tbl;
+
+ if (ioba >= stt->window_size)
+ return H_PARAMETER;
+
+ page = stt->pages[idx / TCES_PER_PAGE];
+ tbl = (u64 *)page_address(page);
+
+ vcpu->arch.gpr[4] = tbl[idx % TCES_PER_PAGE];
+ return H_SUCCESS;
+ }
+ }
+
+ /* Didn't find the liobn, punt it to userspace */
+ return H_TOO_HARD;
+}
+EXPORT_SYMBOL_GPL(kvmppc_h_get_tce);
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 17fc949..8227dba 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -86,7 +86,7 @@
/* CPU points to the first thread of the core */
if (cpu != me && cpu >= 0 && cpu < nr_cpu_ids) {
-#ifdef CONFIG_KVM_XICS
+#ifdef CONFIG_PPC_ICP_NATIVE
int real_cpu = cpu + vcpu->arch.ptid;
if (paca[real_cpu].kvm_hstate.xics_phys)
xics_wake_cpu(real_cpu);
@@ -879,17 +879,6 @@
case KVM_REG_PPC_IAMR:
*val = get_reg_val(id, vcpu->arch.iamr);
break;
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
- case KVM_REG_PPC_TFHAR:
- *val = get_reg_val(id, vcpu->arch.tfhar);
- break;
- case KVM_REG_PPC_TFIAR:
- *val = get_reg_val(id, vcpu->arch.tfiar);
- break;
- case KVM_REG_PPC_TEXASR:
- *val = get_reg_val(id, vcpu->arch.texasr);
- break;
-#endif
case KVM_REG_PPC_FSCR:
*val = get_reg_val(id, vcpu->arch.fscr);
break;
@@ -970,6 +959,69 @@
case KVM_REG_PPC_PPR:
*val = get_reg_val(id, vcpu->arch.ppr);
break;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ case KVM_REG_PPC_TFHAR:
+ *val = get_reg_val(id, vcpu->arch.tfhar);
+ break;
+ case KVM_REG_PPC_TFIAR:
+ *val = get_reg_val(id, vcpu->arch.tfiar);
+ break;
+ case KVM_REG_PPC_TEXASR:
+ *val = get_reg_val(id, vcpu->arch.texasr);
+ break;
+ case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
+ i = id - KVM_REG_PPC_TM_GPR0;
+ *val = get_reg_val(id, vcpu->arch.gpr_tm[i]);
+ break;
+ case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
+ {
+ int j;
+ i = id - KVM_REG_PPC_TM_VSR0;
+ if (i < 32)
+ for (j = 0; j < TS_FPRWIDTH; j++)
+ val->vsxval[j] = vcpu->arch.fp_tm.fpr[i][j];
+ else {
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ val->vval = vcpu->arch.vr_tm.vr[i-32];
+ else
+ r = -ENXIO;
+ }
+ break;
+ }
+ case KVM_REG_PPC_TM_CR:
+ *val = get_reg_val(id, vcpu->arch.cr_tm);
+ break;
+ case KVM_REG_PPC_TM_LR:
+ *val = get_reg_val(id, vcpu->arch.lr_tm);
+ break;
+ case KVM_REG_PPC_TM_CTR:
+ *val = get_reg_val(id, vcpu->arch.ctr_tm);
+ break;
+ case KVM_REG_PPC_TM_FPSCR:
+ *val = get_reg_val(id, vcpu->arch.fp_tm.fpscr);
+ break;
+ case KVM_REG_PPC_TM_AMR:
+ *val = get_reg_val(id, vcpu->arch.amr_tm);
+ break;
+ case KVM_REG_PPC_TM_PPR:
+ *val = get_reg_val(id, vcpu->arch.ppr_tm);
+ break;
+ case KVM_REG_PPC_TM_VRSAVE:
+ *val = get_reg_val(id, vcpu->arch.vrsave_tm);
+ break;
+ case KVM_REG_PPC_TM_VSCR:
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ *val = get_reg_val(id, vcpu->arch.vr_tm.vscr.u[3]);
+ else
+ r = -ENXIO;
+ break;
+ case KVM_REG_PPC_TM_DSCR:
+ *val = get_reg_val(id, vcpu->arch.dscr_tm);
+ break;
+ case KVM_REG_PPC_TM_TAR:
+ *val = get_reg_val(id, vcpu->arch.tar_tm);
+ break;
+#endif
case KVM_REG_PPC_ARCH_COMPAT:
*val = get_reg_val(id, vcpu->arch.vcore->arch_compat);
break;
@@ -1039,17 +1091,6 @@
case KVM_REG_PPC_IAMR:
vcpu->arch.iamr = set_reg_val(id, *val);
break;
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
- case KVM_REG_PPC_TFHAR:
- vcpu->arch.tfhar = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_TFIAR:
- vcpu->arch.tfiar = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_TEXASR:
- vcpu->arch.texasr = set_reg_val(id, *val);
- break;
-#endif
case KVM_REG_PPC_FSCR:
vcpu->arch.fscr = set_reg_val(id, *val);
break;
@@ -1144,6 +1185,68 @@
case KVM_REG_PPC_PPR:
vcpu->arch.ppr = set_reg_val(id, *val);
break;
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+ case KVM_REG_PPC_TFHAR:
+ vcpu->arch.tfhar = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TFIAR:
+ vcpu->arch.tfiar = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TEXASR:
+ vcpu->arch.texasr = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_GPR0 ... KVM_REG_PPC_TM_GPR31:
+ i = id - KVM_REG_PPC_TM_GPR0;
+ vcpu->arch.gpr_tm[i] = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_VSR0 ... KVM_REG_PPC_TM_VSR63:
+ {
+ int j;
+ i = id - KVM_REG_PPC_TM_VSR0;
+ if (i < 32)
+ for (j = 0; j < TS_FPRWIDTH; j++)
+ vcpu->arch.fp_tm.fpr[i][j] = val->vsxval[j];
+ else
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ vcpu->arch.vr_tm.vr[i-32] = val->vval;
+ else
+ r = -ENXIO;
+ break;
+ }
+ case KVM_REG_PPC_TM_CR:
+ vcpu->arch.cr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_LR:
+ vcpu->arch.lr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_CTR:
+ vcpu->arch.ctr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_FPSCR:
+ vcpu->arch.fp_tm.fpscr = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_AMR:
+ vcpu->arch.amr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_PPR:
+ vcpu->arch.ppr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_VRSAVE:
+ vcpu->arch.vrsave_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_VSCR:
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
+ vcpu->arch.vr.vscr.u[3] = set_reg_val(id, *val);
+ else
+ r = - ENXIO;
+ break;
+ case KVM_REG_PPC_TM_DSCR:
+ vcpu->arch.dscr_tm = set_reg_val(id, *val);
+ break;
+ case KVM_REG_PPC_TM_TAR:
+ vcpu->arch.tar_tm = set_reg_val(id, *val);
+ break;
+#endif
case KVM_REG_PPC_ARCH_COMPAT:
r = kvmppc_set_arch_compat(vcpu, set_reg_val(id, *val));
break;
@@ -1360,9 +1463,7 @@
smp_wmb();
#if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP)
if (cpu != smp_processor_id()) {
-#ifdef CONFIG_KVM_XICS
xics_wake_cpu(cpu);
-#endif
if (vcpu->arch.ptid)
++vc->n_woken;
}
@@ -1530,7 +1631,7 @@
vcpu->arch.trap = 0;
if (vcpu->arch.ceded) {
- if (ret != RESUME_GUEST)
+ if (!is_kvmppc_resume_guest(ret))
kvmppc_end_cede(vcpu);
else
kvmppc_set_timer(vcpu);
@@ -1541,7 +1642,7 @@
vc->vcore_state = VCORE_INACTIVE;
list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads,
arch.run_list) {
- if (vcpu->arch.ret != RESUME_GUEST) {
+ if (!is_kvmppc_resume_guest(vcpu->arch.ret)) {
kvmppc_remove_runnable(vc, vcpu);
wake_up(&vcpu->arch.cpu_run);
}
@@ -1731,7 +1832,7 @@
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
}
- } while (r == RESUME_GUEST);
+ } while (is_kvmppc_resume_guest(r));
out:
vcpu->arch.state = KVMPPC_VCPU_NOTREADY;
@@ -2366,7 +2467,7 @@
*/
r = kvmppc_core_check_processor_compat_hv();
if (r < 0)
- return r;
+ return -ENODEV;
kvm_ops_hv.owner = THIS_MODULE;
kvmppc_hv_ops = &kvm_ops_hv;
diff --git a/arch/powerpc/kvm/book3s_hv_interrupts.S b/arch/powerpc/kvm/book3s_hv_interrupts.S
index e873796..e18e3cf 100644
--- a/arch/powerpc/kvm/book3s_hv_interrupts.S
+++ b/arch/powerpc/kvm/book3s_hv_interrupts.S
@@ -71,6 +71,14 @@
mtmsrd r10,1
/* Save host PMU registers */
+BEGIN_FTR_SECTION
+ /* Work around P8 PMAE bug */
+ li r3, -1
+ clrrdi r3, r3, 10
+ mfspr r8, SPRN_MMCR2
+ mtspr SPRN_MMCR2, r3 /* freeze all counters using MMCR2 */
+ isync
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
li r3, 1
sldi r3, r3, 31 /* MMCR0_FC (freeze counters) bit */
mfspr r7, SPRN_MMCR0 /* save MMCR0 */
@@ -87,9 +95,18 @@
cmpwi r5, 0
beq 31f /* skip if not */
mfspr r5, SPRN_MMCR1
+ mfspr r9, SPRN_SIAR
+ mfspr r10, SPRN_SDAR
std r7, HSTATE_MMCR(r13)
std r5, HSTATE_MMCR + 8(r13)
std r6, HSTATE_MMCR + 16(r13)
+ std r9, HSTATE_MMCR + 24(r13)
+ std r10, HSTATE_MMCR + 32(r13)
+BEGIN_FTR_SECTION
+ mfspr r9, SPRN_SIER
+ std r8, HSTATE_MMCR + 40(r13)
+ std r9, HSTATE_MMCR + 48(r13)
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
mfspr r3, SPRN_PMC1
mfspr r5, SPRN_PMC2
mfspr r6, SPRN_PMC3
@@ -110,6 +127,11 @@
stw r10, HSTATE_PMC + 24(r13)
stw r11, HSTATE_PMC + 28(r13)
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201)
+BEGIN_FTR_SECTION
+ mfspr r9, SPRN_SIER
+ std r8, HSTATE_MMCR + 40(r13)
+ std r9, HSTATE_MMCR + 48(r13)
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
31:
/*
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 37fb3ca..1d6c56a 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -111,7 +111,7 @@
rcbits = hpte_r & (HPTE_R_R | HPTE_R_C);
ptel = rev->guest_rpte |= rcbits;
gfn = hpte_rpn(ptel, hpte_page_size(hpte_v, ptel));
- memslot = __gfn_to_memslot(kvm_memslots(kvm), gfn);
+ memslot = __gfn_to_memslot(kvm_memslots_raw(kvm), gfn);
if (!memslot)
return;
@@ -192,7 +192,7 @@
/* Find the memslot (if any) for this address */
gpa = (ptel & HPTE_R_RPN) & ~(psize - 1);
gfn = gpa >> PAGE_SHIFT;
- memslot = __gfn_to_memslot(kvm_memslots(kvm), gfn);
+ memslot = __gfn_to_memslot(kvm_memslots_raw(kvm), gfn);
pa = 0;
is_io = ~0ul;
rmap = NULL;
@@ -670,7 +670,7 @@
psize = hpte_page_size(v, r);
gfn = ((r & HPTE_R_RPN) & ~(psize - 1)) >> PAGE_SHIFT;
- memslot = __gfn_to_memslot(kvm_memslots(kvm), gfn);
+ memslot = __gfn_to_memslot(kvm_memslots_raw(kvm), gfn);
if (memslot) {
hva = __gfn_to_hva_memslot(memslot, gfn);
pte = lookup_linux_pte_and_update(pgdir, hva,
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 818dce3..4963335 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -28,6 +28,9 @@
#include <asm/exception-64s.h>
#include <asm/kvm_book3s_asm.h>
#include <asm/mmu-hash64.h>
+#include <asm/tm.h>
+
+#define VCPU_GPRS_TM(reg) (((reg) * ULONG_SIZE) + VCPU_GPR_TM)
#ifdef __LITTLE_ENDIAN__
#error Need to fix lppaca and SLB shadow accesses in little endian mode
@@ -106,8 +109,18 @@
ld r3, HSTATE_MMCR(r13)
ld r4, HSTATE_MMCR + 8(r13)
ld r5, HSTATE_MMCR + 16(r13)
+ ld r6, HSTATE_MMCR + 24(r13)
+ ld r7, HSTATE_MMCR + 32(r13)
mtspr SPRN_MMCR1, r4
mtspr SPRN_MMCRA, r5
+ mtspr SPRN_SIAR, r6
+ mtspr SPRN_SDAR, r7
+BEGIN_FTR_SECTION
+ ld r8, HSTATE_MMCR + 40(r13)
+ ld r9, HSTATE_MMCR + 48(r13)
+ mtspr SPRN_MMCR2, r8
+ mtspr SPRN_SIER, r9
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
mtspr SPRN_MMCR0, r3
isync
23:
@@ -597,6 +610,116 @@
END_FTR_SECTION_NESTED(CPU_FTR_ARCH_206, CPU_FTR_ARCH_206, 89)
END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
+#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+BEGIN_FTR_SECTION
+ b skip_tm
+END_FTR_SECTION_IFCLR(CPU_FTR_TM)
+
+ /* Turn on TM/FP/VSX/VMX so we can restore them. */
+ mfmsr r5
+ li r6, MSR_TM >> 32
+ sldi r6, r6, 32
+ or r5, r5, r6
+ ori r5, r5, MSR_FP
+ oris r5, r5, (MSR_VEC | MSR_VSX)@h
+ mtmsrd r5
+
+ /*
+ * The user may change these outside of a transaction, so they must
+ * always be context switched.
+ */
+ ld r5, VCPU_TFHAR(r4)
+ ld r6, VCPU_TFIAR(r4)
+ ld r7, VCPU_TEXASR(r4)
+ mtspr SPRN_TFHAR, r5
+ mtspr SPRN_TFIAR, r6
+ mtspr SPRN_TEXASR, r7
+
+ ld r5, VCPU_MSR(r4)
+ rldicl. r5, r5, 64 - MSR_TS_S_LG, 62
+ beq skip_tm /* TM not active in guest */
+
+ /* Make sure the failure summary is set, otherwise we'll program check
+ * when we trechkpt. It's possible that this might have been not set
+ * on a kvmppc_set_one_reg() call but we shouldn't let this crash the
+ * host.
+ */
+ oris r7, r7, (TEXASR_FS)@h
+ mtspr SPRN_TEXASR, r7
+
+ /*
+ * We need to load up the checkpointed state for the guest.
+ * We need to do this early as it will blow away any GPRs, VSRs and
+ * some SPRs.
+ */
+
+ mr r31, r4
+ addi r3, r31, VCPU_FPRS_TM
+ bl .load_fp_state
+ addi r3, r31, VCPU_VRS_TM
+ bl .load_vr_state
+ mr r4, r31
+ lwz r7, VCPU_VRSAVE_TM(r4)
+ mtspr SPRN_VRSAVE, r7
+
+ ld r5, VCPU_LR_TM(r4)
+ lwz r6, VCPU_CR_TM(r4)
+ ld r7, VCPU_CTR_TM(r4)
+ ld r8, VCPU_AMR_TM(r4)
+ ld r9, VCPU_TAR_TM(r4)
+ mtlr r5
+ mtcr r6
+ mtctr r7
+ mtspr SPRN_AMR, r8
+ mtspr SPRN_TAR, r9
+
+ /*
+ * Load up PPR and DSCR values but don't put them in the actual SPRs
+ * till the last moment to avoid running with userspace PPR and DSCR for
+ * too long.
+ */
+ ld r29, VCPU_DSCR_TM(r4)
+ ld r30, VCPU_PPR_TM(r4)
+
+ std r2, PACATMSCRATCH(r13) /* Save TOC */
+
+ /* Clear the MSR RI since r1, r13 are all going to be foobar. */
+ li r5, 0
+ mtmsrd r5, 1
+
+ /* Load GPRs r0-r28 */
+ reg = 0
+ .rept 29
+ ld reg, VCPU_GPRS_TM(reg)(r31)
+ reg = reg + 1
+ .endr
+
+ mtspr SPRN_DSCR, r29
+ mtspr SPRN_PPR, r30
+
+ /* Load final GPRs */
+ ld 29, VCPU_GPRS_TM(29)(r31)
+ ld 30, VCPU_GPRS_TM(30)(r31)
+ ld 31, VCPU_GPRS_TM(31)(r31)
+
+ /* TM checkpointed state is now setup. All GPRs are now volatile. */
+ TRECHKPT
+
+ /* Now let's get back the state we need. */
+ HMT_MEDIUM
+ GET_PACA(r13)
+ ld r29, HSTATE_DSCR(r13)
+ mtspr SPRN_DSCR, r29
+ ld r4, HSTATE_KVM_VCPU(r13)
+ ld r1, HSTATE_HOST_R1(r13)
+ ld r2, PACATMSCRATCH(r13)
+
+ /* Set the MSR RI since we have our registers back. */
+ li r5, MSR_RI
+ mtmsrd r5, 1
+skip_tm:
+#endif
+
/* Load guest PMU registers */
/* R4 is live here (vcpu pointer) */
li r3, 1
@@ -704,14 +827,6 @@
ld r6, VCPU_VTB(r4)
mtspr SPRN_IC, r5
mtspr SPRN_VTB, r6
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
- ld r5, VCPU_TFHAR(r4)
- ld r6, VCPU_TFIAR(r4)
- ld r7, VCPU_TEXASR(r4)
- mtspr SPRN_TFHAR, r5
- mtspr SPRN_TFIAR, r6
- mtspr SPRN_TEXASR, r7
-#endif
ld r8, VCPU_EBBHR(r4)
mtspr SPRN_EBBHR, r8
ld r5, VCPU_EBBRR(r4)
@@ -736,6 +851,10 @@
* Set the decrementer to the guest decrementer.
*/
ld r8,VCPU_DEC_EXPIRES(r4)
+ /* r8 is a host timebase value here, convert to guest TB */
+ ld r5,HSTATE_KVM_VCORE(r13)
+ ld r6,VCORE_TB_OFFSET(r5)
+ add r8,r8,r6
mftb r7
subf r3,r7,r8
mtspr SPRN_DEC,r3
@@ -817,7 +936,8 @@
12: mtspr SPRN_SRR0, r10
mr r10,r0
mtspr SPRN_SRR1, r11
- ld r11, VCPU_INTR_MSR(r4)
+ mr r9, r4
+ bl kvmppc_msr_interrupt
5:
/*
@@ -1098,17 +1218,15 @@
mftb r6
extsw r5,r5
add r5,r5,r6
+ /* r5 is a guest timebase value here, convert to host TB */
+ ld r3,HSTATE_KVM_VCORE(r13)
+ ld r4,VCORE_TB_OFFSET(r3)
+ subf r5,r4,r5
std r5,VCPU_DEC_EXPIRES(r9)
BEGIN_FTR_SECTION
b 8f
END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S)
- /* Turn on TM so we can access TFHAR/TFIAR/TEXASR */
- mfmsr r8
- li r0, 1
- rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG
- mtmsrd r8
-
/* Save POWER8-specific registers */
mfspr r5, SPRN_IAMR
mfspr r6, SPRN_PSPB
@@ -1122,14 +1240,6 @@
std r5, VCPU_IC(r9)
std r6, VCPU_VTB(r9)
std r7, VCPU_TAR(r9)
-#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
- mfspr r5, SPRN_TFHAR
- mfspr r6, SPRN_TFIAR
- mfspr r7, SPRN_TEXASR
- std r5, VCPU_TFHAR(r9)
- std r6, VCPU_TFIAR(r9)
- std r7, VCPU_TEXASR(r9)
-#endif
mfspr r8, SPRN_EBBHR
std r8, VCPU_EBBHR(r9)
mfspr r5, SPRN_EBBRR
@@ -1387,7 +1497,7 @@
ld r8,VCORE_TB_OFFSET(r5)
cmpdi r8,0
beq 17f
- mftb r6 /* current host timebase */
+ mftb r6 /* current guest timebase */
subf r8,r8,r6
mtspr SPRN_TBU40,r8 /* update upper 40 bits */
mftb r7 /* check if lower 24 bits overflowed */
@@ -1557,7 +1667,7 @@
mtspr SPRN_SRR0, r10
mtspr SPRN_SRR1, r11
li r10, BOOK3S_INTERRUPT_DATA_STORAGE
- ld r11, VCPU_INTR_MSR(r9)
+ bl kvmppc_msr_interrupt
fast_interrupt_c_return:
6: ld r7, VCPU_CTR(r9)
lwz r8, VCPU_XER(r9)
@@ -1626,7 +1736,7 @@
1: mtspr SPRN_SRR0, r10
mtspr SPRN_SRR1, r11
li r10, BOOK3S_INTERRUPT_INST_STORAGE
- ld r11, VCPU_INTR_MSR(r9)
+ bl kvmppc_msr_interrupt
b fast_interrupt_c_return
3: ld r6, VCPU_KVM(r9) /* not relocated, use VRMA */
@@ -1669,7 +1779,7 @@
mtspr SPRN_SRR0,r10
mtspr SPRN_SRR1,r11
li r10, BOOK3S_INTERRUPT_SYSCALL
- ld r11, VCPU_INTR_MSR(r9)
+ bl kvmppc_msr_interrupt
mr r4,r9
b fast_guest_return
@@ -1691,7 +1801,7 @@
.long 0 /* 0x10 - H_CLEAR_MOD */
.long 0 /* 0x14 - H_CLEAR_REF */
.long .kvmppc_h_protect - hcall_real_table
- .long 0 /* 0x1c - H_GET_TCE */
+ .long .kvmppc_h_get_tce - hcall_real_table
.long .kvmppc_h_put_tce - hcall_real_table
.long 0 /* 0x24 - H_SET_SPRG0 */
.long .kvmppc_h_set_dabr - hcall_real_table
@@ -1997,7 +2107,7 @@
beq mc_cont
/* If not, deliver a machine check. SRR0/1 are already set */
li r10, BOOK3S_INTERRUPT_MACHINE_CHECK
- ld r11, VCPU_INTR_MSR(r9)
+ bl kvmppc_msr_interrupt
b fast_interrupt_c_return
/*
@@ -2138,8 +2248,6 @@
mfspr r6,SPRN_VRSAVE
stw r6,VCPU_VRSAVE(r31)
mtlr r30
- mtmsrd r5
- isync
blr
/*
@@ -2186,3 +2294,20 @@
*/
kvmppc_bad_host_intr:
b .
+
+/*
+ * This mimics the MSR transition on IRQ delivery. The new guest MSR is taken
+ * from VCPU_INTR_MSR and is modified based on the required TM state changes.
+ * r11 has the guest MSR value (in/out)
+ * r9 has a vcpu pointer (in)
+ * r0 is used as a scratch register
+ */
+kvmppc_msr_interrupt:
+ rldicl r0, r11, 64 - MSR_TS_S_LG, 62
+ cmpwi r0, 2 /* Check if we are in transactional state.. */
+ ld r11, VCPU_INTR_MSR(r9)
+ bne 1f
+ /* ... if transactional, change to suspended */
+ li r0, 1
+1: rldimi r11, r0, MSR_TS_S_LG, 63 - MSR_TS_T_LG
+ blr
diff --git a/arch/powerpc/kvm/book3s_rtas.c b/arch/powerpc/kvm/book3s_rtas.c
index cf95cde..7a05315 100644
--- a/arch/powerpc/kvm/book3s_rtas.c
+++ b/arch/powerpc/kvm/book3s_rtas.c
@@ -213,8 +213,11 @@
gpa_t args_phys;
int rc;
- /* r4 contains the guest physical address of the RTAS args */
- args_phys = kvmppc_get_gpr(vcpu, 4);
+ /*
+ * r4 contains the guest physical address of the RTAS args
+ * Mask off the top 4 bits since this is a guest real address
+ */
+ args_phys = kvmppc_get_gpr(vcpu, 4) & KVM_PAM;
rc = kvm_read_guest(vcpu->kvm, args_phys, &args, sizeof(args));
if (rc)
