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authorPaul Mackerras <paulus@ozlabs.org>2018-09-12 16:14:05 +1000
committerPaul Mackerras <paulus@ozlabs.org>2018-10-09 12:00:43 +1100
commitb76596ccf0f5b1b035a538aac373aa0bfc035984 (patch)
tree372be6a3de9829525210646097086b84c87df50a
parentb17f7f331690061f68b0632f219da766173f97ab (diff)
downloadpowerpc-b76596ccf0f5b1b035a538aac373aa0bfc035984.tar.gz
KVM: PPC: Use ccr field in pt_regs struct embedded in vcpu struct
When the 'regs' field was added to struct kvm_vcpu_arch, the code was changed to use several of the fields inside regs (e.g., gpr, lr, etc.) but not the ccr field, because the ccr field in struct pt_regs is 64 bits on 64-bit platforms, but the cr field in kvm_vcpu_arch is only 32 bits. This changes the code to use the regs.ccr field instead of cr, and changes the assembly code on 64-bit platforms to use 64-bit loads and stores instead of 32-bit ones. Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
-rw-r--r--arch/powerpc/include/asm/kvm_book3s.h4
-rw-r--r--arch/powerpc/include/asm/kvm_book3s_64.h4
-rw-r--r--arch/powerpc/include/asm/kvm_booke.h4
-rw-r--r--arch/powerpc/include/asm/kvm_host.h2
-rw-r--r--arch/powerpc/kernel/asm-offsets.c4
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c12
-rw-r--r--arch/powerpc/kvm/book3s_hv.c4
-rw-r--r--arch/powerpc/kvm/book3s_hv_rmhandlers.S4
-rw-r--r--arch/powerpc/kvm/book3s_hv_tm.c6
-rw-r--r--arch/powerpc/kvm/book3s_hv_tm_builtin.c5
-rw-r--r--arch/powerpc/kvm/book3s_pr.c4
-rw-r--r--arch/powerpc/kvm/bookehv_interrupts.S8
-rw-r--r--arch/powerpc/kvm/emulate_loadstore.c1
13 files changed, 30 insertions, 32 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index 83a9aa3cf68917..dd18d8174504f5 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -301,12 +301,12 @@ static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
{
- vcpu->arch.cr = val;
+ vcpu->arch.regs.ccr = val;
}
static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
{
- return vcpu->arch.cr;
+ return vcpu->arch.regs.ccr;
}
static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h
index af25aaa24090e5..5c0e2d9a7e1514 100644
--- a/arch/powerpc/include/asm/kvm_book3s_64.h
+++ b/arch/powerpc/include/asm/kvm_book3s_64.h
@@ -483,7 +483,7 @@ static inline u64 sanitize_msr(u64 msr)
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
static inline void copy_from_checkpoint(struct kvm_vcpu *vcpu)
{
- vcpu->arch.cr = vcpu->arch.cr_tm;
+ vcpu->arch.regs.ccr = vcpu->arch.cr_tm;
vcpu->arch.regs.xer = vcpu->arch.xer_tm;
vcpu->arch.regs.link = vcpu->arch.lr_tm;
vcpu->arch.regs.ctr = vcpu->arch.ctr_tm;
@@ -500,7 +500,7 @@ static inline void copy_from_checkpoint(struct kvm_vcpu *vcpu)
static inline void copy_to_checkpoint(struct kvm_vcpu *vcpu)
{
- vcpu->arch.cr_tm = vcpu->arch.cr;
+ vcpu->arch.cr_tm = vcpu->arch.regs.ccr;
vcpu->arch.xer_tm = vcpu->arch.regs.xer;
vcpu->arch.lr_tm = vcpu->arch.regs.link;
vcpu->arch.ctr_tm = vcpu->arch.regs.ctr;
diff --git a/arch/powerpc/include/asm/kvm_booke.h b/arch/powerpc/include/asm/kvm_booke.h
index d513e3ed1c659c..f0cef625f17ce0 100644
--- a/arch/powerpc/include/asm/kvm_booke.h
+++ b/arch/powerpc/include/asm/kvm_booke.h
@@ -46,12 +46,12 @@ static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
{
- vcpu->arch.cr = val;
+ vcpu->arch.regs.ccr = val;
}
static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
{
- return vcpu->arch.cr;
+ return vcpu->arch.regs.ccr;
}
static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index a3d4f61a409d89..c9cc42f73b3c57 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -538,8 +538,6 @@ struct kvm_vcpu_arch {
ulong tar;
#endif
- u32 cr;
-
#ifdef CONFIG_PPC_BOOK3S
ulong hflags;
ulong guest_owned_ext;
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 89cf15566c4e80..7c3738d890e8b2 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -438,7 +438,7 @@ int main(void)
#ifdef CONFIG_PPC_BOOK3S
OFFSET(VCPU_TAR, kvm_vcpu, arch.tar);
#endif
- OFFSET(VCPU_CR, kvm_vcpu, arch.cr);
+ OFFSET(VCPU_CR, kvm_vcpu, arch.regs.ccr);
OFFSET(VCPU_PC, kvm_vcpu, arch.regs.nip);
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
OFFSET(VCPU_MSR, kvm_vcpu, arch.shregs.msr);
@@ -695,7 +695,7 @@ int main(void)
#endif /* CONFIG_PPC_BOOK3S_64 */
#else /* CONFIG_PPC_BOOK3S */
- OFFSET(VCPU_CR, kvm_vcpu, arch.cr);
+ OFFSET(VCPU_CR, kvm_vcpu, arch.regs.ccr);
OFFSET(VCPU_XER, kvm_vcpu, arch.regs.xer);
OFFSET(VCPU_LR, kvm_vcpu, arch.regs.link);
OFFSET(VCPU_CTR, kvm_vcpu, arch.regs.ctr);
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 36b11c5a0dbb96..2654df220d0548 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -110,7 +110,7 @@ static inline void kvmppc_copyto_vcpu_tm(struct kvm_vcpu *vcpu)
vcpu->arch.ctr_tm = vcpu->arch.regs.ctr;
vcpu->arch.tar_tm = vcpu->arch.tar;
vcpu->arch.lr_tm = vcpu->arch.regs.link;
- vcpu->arch.cr_tm = vcpu->arch.cr;
+ vcpu->arch.cr_tm = vcpu->arch.regs.ccr;
vcpu->arch.xer_tm = vcpu->arch.regs.xer;
vcpu->arch.vrsave_tm = vcpu->arch.vrsave;
}
@@ -129,7 +129,7 @@ static inline void kvmppc_copyfrom_vcpu_tm(struct kvm_vcpu *vcpu)
vcpu->arch.regs.ctr = vcpu->arch.ctr_tm;
vcpu->arch.tar = vcpu->arch.tar_tm;
vcpu->arch.regs.link = vcpu->arch.lr_tm;
- vcpu->arch.cr = vcpu->arch.cr_tm;
+ vcpu->arch.regs.ccr = vcpu->arch.cr_tm;
vcpu->arch.regs.xer = vcpu->arch.xer_tm;
vcpu->arch.vrsave = vcpu->arch.vrsave_tm;
}
@@ -141,7 +141,7 @@ static void kvmppc_emulate_treclaim(struct kvm_vcpu *vcpu, int ra_val)
uint64_t texasr;
/* CR0 = 0 | MSR[TS] | 0 */
- vcpu->arch.cr = (vcpu->arch.cr & ~(CR0_MASK << CR0_SHIFT)) |
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)) |
(((guest_msr & MSR_TS_MASK) >> (MSR_TS_S_LG - 1))
<< CR0_SHIFT);
@@ -220,7 +220,7 @@ void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val)
tm_abort(ra_val);
/* CR0 = 0 | MSR[TS] | 0 */
- vcpu->arch.cr = (vcpu->arch.cr & ~(CR0_MASK << CR0_SHIFT)) |
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)) |
(((guest_msr & MSR_TS_MASK) >> (MSR_TS_S_LG - 1))
<< CR0_SHIFT);
@@ -494,8 +494,8 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (!(kvmppc_get_msr(vcpu) & MSR_PR)) {
preempt_disable();
- vcpu->arch.cr = (CR0_TBEGIN_FAILURE |
- (vcpu->arch.cr & ~(CR0_MASK << CR0_SHIFT)));
+ vcpu->arch.regs.ccr = (CR0_TBEGIN_FAILURE |
+ (vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)));
vcpu->arch.texasr = (TEXASR_FS | TEXASR_EXACT |
(((u64)(TM_CAUSE_EMULATE | TM_CAUSE_PERSISTENT))
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 70ae0cef88a8d8..123bd18d43dd99 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -410,8 +410,8 @@ static void kvmppc_dump_regs(struct kvm_vcpu *vcpu)
vcpu->arch.shregs.sprg0, vcpu->arch.shregs.sprg1);
pr_err("sprg2 = %.16llx sprg3 = %.16llx\n",
vcpu->arch.shregs.sprg2, vcpu->arch.shregs.sprg3);
- pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n",
- vcpu->arch.cr, vcpu->arch.regs.xer, vcpu->arch.shregs.dsisr);
+ pr_err("cr = %.8lx xer = %.16lx dsisr = %.8x\n",
+ vcpu->arch.regs.ccr, vcpu->arch.regs.xer, vcpu->arch.shregs.dsisr);
pr_err("dar = %.16llx\n", vcpu->arch.shregs.dar);
pr_err("fault dar = %.16lx dsisr = %.8x\n",
vcpu->arch.fault_dar, vcpu->arch.fault_dsisr);
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index ea84696b0a3cbc..9cea23866378b6 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -1092,7 +1092,7 @@ BEGIN_FTR_SECTION
END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
ld r5, VCPU_LR(r4)
- lwz r6, VCPU_CR(r4)
+ ld r6, VCPU_CR(r4)
mtlr r5
mtcr r6
@@ -1280,7 +1280,7 @@ kvmppc_interrupt_hv:
std r3, VCPU_GPR(R12)(r9)
/* CR is in the high half of r12 */
srdi r4, r12, 32
- stw r4, VCPU_CR(r9)
+ std r4, VCPU_CR(r9)
BEGIN_FTR_SECTION
ld r3, HSTATE_CFAR(r13)
std r3, VCPU_CFAR(r9)
diff --git a/arch/powerpc/kvm/book3s_hv_tm.c b/arch/powerpc/kvm/book3s_hv_tm.c
index 008285058f9b55..888e2609e3f156 100644
--- a/arch/powerpc/kvm/book3s_hv_tm.c
+++ b/arch/powerpc/kvm/book3s_hv_tm.c
@@ -130,7 +130,7 @@ int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu)
return RESUME_GUEST;
}
/* Set CR0 to indicate previous transactional state */
- vcpu->arch.cr = (vcpu->arch.cr & 0x0fffffff) |
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & 0x0fffffff) |
(((msr & MSR_TS_MASK) >> MSR_TS_S_LG) << 28);
/* L=1 => tresume, L=0 => tsuspend */
if (instr & (1 << 21)) {
@@ -174,7 +174,7 @@ int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu)
copy_from_checkpoint(vcpu);
/* Set CR0 to indicate previous transactional state */
- vcpu->arch.cr = (vcpu->arch.cr & 0x0fffffff) |
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & 0x0fffffff) |
(((msr & MSR_TS_MASK) >> MSR_TS_S_LG) << 28);
vcpu->arch.shregs.msr &= ~MSR_TS_MASK;
return RESUME_GUEST;
@@ -204,7 +204,7 @@ int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu)
copy_to_checkpoint(vcpu);
/* Set CR0 to indicate previous transactional state */
- vcpu->arch.cr = (vcpu->arch.cr & 0x0fffffff) |
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & 0x0fffffff) |
(((msr & MSR_TS_MASK) >> MSR_TS_S_LG) << 28);
vcpu->arch.shregs.msr = msr | MSR_TS_S;
return RESUME_GUEST;
diff --git a/arch/powerpc/kvm/book3s_hv_tm_builtin.c b/arch/powerpc/kvm/book3s_hv_tm_builtin.c
index b2c7c6fca4f96e..3cf5863bc06e85 100644
--- a/arch/powerpc/kvm/book3s_hv_tm_builtin.c
+++ b/arch/powerpc/kvm/book3s_hv_tm_builtin.c
@@ -89,7 +89,8 @@ int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu)
if (instr & (1 << 21))
vcpu->arch.shregs.msr = (msr & ~MSR_TS_MASK) | MSR_TS_T;
/* Set CR0 to 0b0010 */
- vcpu->arch.cr = (vcpu->arch.cr & 0x0fffffff) | 0x20000000;
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & 0x0fffffff) |
+ 0x20000000;
return 1;
}
@@ -105,5 +106,5 @@ void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu)
vcpu->arch.shregs.msr &= ~MSR_TS_MASK; /* go to N state */
vcpu->arch.regs.nip = vcpu->arch.tfhar;
copy_from_checkpoint(vcpu);
- vcpu->arch.cr = (vcpu->arch.cr & 0x0fffffff) | 0xa0000000;
+ vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & 0x0fffffff) | 0xa0000000;
}
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index 059683e4e67a2e..4efd65d9e82806 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -167,7 +167,7 @@ void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu)
svcpu->gpr[11] = vcpu->arch.regs.gpr[11];
svcpu->gpr[12] = vcpu->arch.regs.gpr[12];
svcpu->gpr[13] = vcpu->arch.regs.gpr[13];
- svcpu->cr = vcpu->arch.cr;
+ svcpu->cr = vcpu->arch.regs.ccr;
svcpu->xer = vcpu->arch.regs.xer;
svcpu->ctr = vcpu->arch.regs.ctr;
svcpu->lr = vcpu->arch.regs.link;
@@ -249,7 +249,7 @@ void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu)
vcpu->arch.regs.gpr[11] = svcpu->gpr[11];
vcpu->arch.regs.gpr[12] = svcpu->gpr[12];
vcpu->arch.regs.gpr[13] = svcpu->gpr[13];
- vcpu->arch.cr = svcpu->cr;
+ vcpu->arch.regs.ccr = svcpu->cr;
vcpu->arch.regs.xer = svcpu->xer;
vcpu->arch.regs.ctr = svcpu->ctr;
vcpu->arch.regs.link = svcpu->lr;
diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S
index 81bd8a07aa51f0..051af7d973275a 100644
--- a/arch/powerpc/kvm/bookehv_interrupts.S
+++ b/arch/powerpc/kvm/bookehv_interrupts.S
@@ -182,7 +182,7 @@
*/
PPC_LL r4, PACACURRENT(r13)
PPC_LL r4, (THREAD + THREAD_KVM_VCPU)(r4)
- stw r10, VCPU_CR(r4)
+ PPC_STL r10, VCPU_CR(r4)
PPC_STL r11, VCPU_GPR(R4)(r4)
PPC_STL r5, VCPU_GPR(R5)(r4)
PPC_STL r6, VCPU_GPR(R6)(r4)
@@ -292,7 +292,7 @@ _GLOBAL(kvmppc_handler_\intno\()_\srr1)
PPC_STL r4, VCPU_GPR(R4)(r11)
PPC_LL r4, THREAD_NORMSAVE(0)(r10)
PPC_STL r5, VCPU_GPR(R5)(r11)
- stw r13, VCPU_CR(r11)
+ PPC_STL r13, VCPU_CR(r11)
mfspr r5, \srr0
PPC_STL r3, VCPU_GPR(R10)(r11)
PPC_LL r3, THREAD_NORMSAVE(2)(r10)
@@ -319,7 +319,7 @@ _GLOBAL(kvmppc_handler_\intno\()_\srr1)
PPC_STL r4, VCPU_GPR(R4)(r11)
PPC_LL r4, GPR9(r8)
PPC_STL r5, VCPU_GPR(R5)(r11)
- stw r9, VCPU_CR(r11)
+ PPC_STL r9, VCPU_CR(r11)
mfspr r5, \srr0
PPC_STL r3, VCPU_GPR(R8)(r11)
PPC_LL r3, GPR10(r8)
@@ -643,7 +643,7 @@ lightweight_exit:
PPC_LL r3, VCPU_LR(r4)
PPC_LL r5, VCPU_XER(r4)
PPC_LL r6, VCPU_CTR(r4)
- lwz r7, VCPU_CR(r4)
+ PPC_LL r7, VCPU_CR(r4)
PPC_LL r8, VCPU_PC(r4)
PPC_LD(r9, VCPU_SHARED_MSR, r11)
PPC_LL r0, VCPU_GPR(R0)(r4)
diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c
index 75dce1ef3bc834..f91b1309a0a861 100644
--- a/arch/powerpc/kvm/emulate_loadstore.c
+++ b/arch/powerpc/kvm/emulate_loadstore.c
@@ -117,7 +117,6 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu)
emulated = EMULATE_FAIL;
vcpu->arch.regs.msr = vcpu->arch.shared->msr;
- vcpu->arch.regs.ccr = vcpu->arch.cr;
if (analyse_instr(&op, &vcpu->arch.regs, inst) == 0) {
int type = op.type & INSTR_TYPE_MASK;
int size = GETSIZE(op.type);