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Merge 'git://github.com/agraf/linux-2.6.git kvm-ppc-next' into queue

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This commit is contained in:
Gleb Natapov 2013-03-24 11:43:09 +02:00
commit 9a6d77d553
11 changed files with 133 additions and 93 deletions
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4
Documentation/virtual/kvm/api.txt
View File

@ -1788,6 +1788,10 @@ registers, find a list below:
PPC | KVM_REG_PPC_VPA_DTL | 128
PPC | KVM_REG_PPC_EPCR | 32
PPC | KVM_REG_PPC_EPR | 32
PPC | KVM_REG_PPC_TCR | 32
PPC | KVM_REG_PPC_TSR | 32
PPC | KVM_REG_PPC_OR_TSR | 32
PPC | KVM_REG_PPC_CLEAR_TSR | 32
ARM registers are mapped using the lower 32 bits. The upper 16 of that
is the register group type, or coprocessor number:

1
arch/powerpc/include/asm/kvm_host.h
View File

@ -504,6 +504,7 @@ struct kvm_vcpu_arch {
u32 tlbcfg[4];
u32 mmucfg;
u32 epr;
u32 crit_save;
struct kvmppc_booke_debug_reg dbg_reg;
#endif
gpa_t paddr_accessed;

3
arch/powerpc/include/asm/kvm_ppc.h
View File

@ -104,8 +104,7 @@ extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu);
extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq);
extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq);
extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu);
extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu);
extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,

5
arch/powerpc/include/uapi/asm/kvm.h
View File

@ -417,4 +417,9 @@ struct kvm_get_htab_header {
#define KVM_REG_PPC_EPCR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x85)
#define KVM_REG_PPC_EPR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x86)
/* Timer Status Register OR/CLEAR interface */
#define KVM_REG_PPC_OR_TSR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x87)
#define KVM_REG_PPC_CLEAR_TSR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x88)
#define KVM_REG_PPC_TCR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x89)
#define KVM_REG_PPC_TSR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x8a)
#endif /* __LINUX_KVM_POWERPC_H */

1
arch/powerpc/kernel/asm-offsets.c
View File

@ -596,6 +596,7 @@ int main(void)
DEFINE(VCPU_LAST_INST, offsetof(struct kvm_vcpu, arch.last_inst));
DEFINE(VCPU_FAULT_DEAR, offsetof(struct kvm_vcpu, arch.fault_dear));
DEFINE(VCPU_FAULT_ESR, offsetof(struct kvm_vcpu, arch.fault_esr));
DEFINE(VCPU_CRIT_SAVE, offsetof(struct kvm_vcpu, arch.crit_save));
#endif /* CONFIG_PPC_BOOK3S */
#endif /* CONFIG_KVM */

3
arch/powerpc/kvm/book3s.c
View File

@ -160,8 +160,7 @@ void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
kvmppc_book3s_queue_irqprio(vcpu, vec);
}
void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq)
void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
{
kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);

57
arch/powerpc/kvm/booke.c
View File

@ -222,8 +222,7 @@ void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
kvmppc_booke_queue_irqprio(vcpu, prio);
}
void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
struct kvm_interrupt *irq)
void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
{
clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
@ -1148,6 +1147,18 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
return r;
}
static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
{
u32 old_tsr = vcpu->arch.tsr;
vcpu->arch.tsr = new_tsr;
if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
arm_next_watchdog(vcpu);
update_timer_ints(vcpu);
}
/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
@ -1287,16 +1298,8 @@ static int set_sregs_base(struct kvm_vcpu *vcpu,
kvmppc_emulate_dec(vcpu);
}
if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) {
u32 old_tsr = vcpu->arch.tsr;
vcpu->arch.tsr = sregs->u.e.tsr;
if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
arm_next_watchdog(vcpu);
update_timer_ints(vcpu);
}
if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
return 0;
}
@ -1438,6 +1441,12 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
r = put_user(vcpu->arch.epcr, (u32 __user *)(long)reg->addr);
break;
#endif
case KVM_REG_PPC_TCR:
r = put_user(vcpu->arch.tcr, (u32 __user *)(long)reg->addr);
break;
case KVM_REG_PPC_TSR:
r = put_user(vcpu->arch.tsr, (u32 __user *)(long)reg->addr);
break;
default:
break;
}
@ -1481,6 +1490,30 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
break;
}
#endif
case KVM_REG_PPC_OR_TSR: {
u32 tsr_bits;
r = get_user(tsr_bits, (u32 __user *)(long)reg->addr);
kvmppc_set_tsr_bits(vcpu, tsr_bits);
break;
}
case KVM_REG_PPC_CLEAR_TSR: {
u32 tsr_bits;
r = get_user(tsr_bits, (u32 __user *)(long)reg->addr);
kvmppc_clr_tsr_bits(vcpu, tsr_bits);
break;
}
case KVM_REG_PPC_TSR: {
u32 tsr;
r = get_user(tsr, (u32 __user *)(long)reg->addr);
kvmppc_set_tsr(vcpu, tsr);
break;
}
case KVM_REG_PPC_TCR: {
u32 tcr;
r = get_user(tcr, (u32 __user *)(long)reg->addr);
kvmppc_set_tcr(vcpu, tcr);
break;
}
default:
break;
}

42
arch/powerpc/kvm/booke_interrupts.S
View File

@ -54,8 +54,7 @@
(1<<BOOKE_INTERRUPT_DTLB_MISS) | \
(1<<BOOKE_INTERRUPT_ALIGNMENT))
.macro KVM_HANDLER ivor_nr scratch srr0
_GLOBAL(kvmppc_handler_\ivor_nr)
.macro __KVM_HANDLER ivor_nr scratch srr0
/* Get pointer to vcpu and record exit number. */
mtspr \scratch , r4
mfspr r4, SPRN_SPRG_THREAD
@ -76,6 +75,43 @@ _GLOBAL(kvmppc_handler_\ivor_nr)
bctr
.endm
.macro KVM_HANDLER ivor_nr scratch srr0
_GLOBAL(kvmppc_handler_\ivor_nr)
__KVM_HANDLER \ivor_nr \scratch \srr0
.endm
.macro KVM_DBG_HANDLER ivor_nr scratch srr0
_GLOBAL(kvmppc_handler_\ivor_nr)
mtspr \scratch, r4
mfspr r4, SPRN_SPRG_THREAD
lwz r4, THREAD_KVM_VCPU(r4)
stw r3, VCPU_CRIT_SAVE(r4)
mfcr r3
mfspr r4, SPRN_CSRR1
andi. r4, r4, MSR_PR
bne 1f
/* debug interrupt happened in enter/exit path */
mfspr r4, SPRN_CSRR1
rlwinm r4, r4, 0, ~MSR_DE
mtspr SPRN_CSRR1, r4
lis r4, 0xffff
ori r4, r4, 0xffff
mtspr SPRN_DBSR, r4
mfspr r4, SPRN_SPRG_THREAD
lwz r4, THREAD_KVM_VCPU(r4)
mtcr r3
lwz r3, VCPU_CRIT_SAVE(r4)
mfspr r4, \scratch
rfci
1: /* debug interrupt happened in guest */
mtcr r3
mfspr r4, SPRN_SPRG_THREAD
lwz r4, THREAD_KVM_VCPU(r4)
lwz r3, VCPU_CRIT_SAVE(r4)
mfspr r4, \scratch
__KVM_HANDLER \ivor_nr \scratch \srr0
.endm
.macro KVM_HANDLER_ADDR ivor_nr
.long kvmppc_handler_\ivor_nr
.endm
@ -100,7 +136,7 @@ KVM_HANDLER BOOKE_INTERRUPT_FIT SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_WATCHDOG SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0
KVM_HANDLER BOOKE_INTERRUPT_DTLB_MISS SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_ITLB_MISS SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_DEBUG SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0
KVM_DBG_HANDLER BOOKE_INTERRUPT_DEBUG SPRN_SPRG_RSCRATCH_CRIT SPRN_CSRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_UNAVAIL SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_DATA SPRN_SPRG_RSCRATCH0 SPRN_SRR0
KVM_HANDLER BOOKE_INTERRUPT_SPE_FP_ROUND SPRN_SPRG_RSCRATCH0 SPRN_SRR0

24
arch/powerpc/kvm/e500.h
View File

@ -26,17 +26,20 @@
#define E500_PID_NUM 3
#define E500_TLB_NUM 2
#define E500_TLB_VALID 1
#define E500_TLB_BITMAP 2
/* entry is mapped somewhere in host TLB */
#define E500_TLB_VALID (1 << 0)
/* TLB1 entry is mapped by host TLB1, tracked by bitmaps */
#define E500_TLB_BITMAP (1 << 1)
/* TLB1 entry is mapped by host TLB0 */
#define E500_TLB_TLB0 (1 << 2)
struct tlbe_ref {
pfn_t pfn;
unsigned int flags; /* E500_TLB_* */
pfn_t pfn; /* valid only for TLB0, except briefly */
unsigned int flags; /* E500_TLB_* */
};
struct tlbe_priv {
struct tlbe_ref ref; /* TLB0 only -- TLB1 uses tlb_refs */
struct tlbe_ref ref;
};
#ifdef CONFIG_KVM_E500V2
@ -63,17 +66,6 @@ struct kvmppc_vcpu_e500 {
unsigned int gtlb_nv[E500_TLB_NUM];
/*
* information associated with each host TLB entry --
* TLB1 only for now. If/when guest TLB1 entries can be
* mapped with host TLB0, this will be used for that too.
*
* We don't want to use this for guest TLB0 because then we'd
* have the overhead of doing the translation again even if
* the entry is still in the guest TLB (e.g. we swapped out
* and back, and our host TLB entries got evicted).
*/
struct tlbe_ref *tlb_refs[E500_TLB_NUM];
unsigned int host_tlb1_nv;
u32 svr;

84
arch/powerpc/kvm/e500_mmu_host.c
View File

@ -193,8 +193,11 @@ void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel,
struct tlbe_ref *ref = &vcpu_e500->gtlb_priv[tlbsel][esel].ref;
/* Don't bother with unmapped entries */
if (!(ref->flags & E500_TLB_VALID))
return;
if (!(ref->flags & E500_TLB_VALID)) {
WARN(ref->flags & (E500_TLB_BITMAP | E500_TLB_TLB0),
"%s: flags %x\n", __func__, ref->flags);
WARN_ON(tlbsel == 1 && vcpu_e500->g2h_tlb1_map[esel]);
}
if (tlbsel == 1 && ref->flags & E500_TLB_BITMAP) {
u64 tmp = vcpu_e500->g2h_tlb1_map[esel];
@ -248,7 +251,7 @@ static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
pfn_t pfn)
{
ref->pfn = pfn;
ref->flags = E500_TLB_VALID;
ref->flags |= E500_TLB_VALID;
if (tlbe_is_writable(gtlbe))
kvm_set_pfn_dirty(pfn);
@ -257,6 +260,7 @@ static inline void kvmppc_e500_ref_setup(struct tlbe_ref *ref,
static inline void kvmppc_e500_ref_release(struct tlbe_ref *ref)
{
if (ref->flags & E500_TLB_VALID) {
/* FIXME: don't log bogus pfn for TLB1 */
trace_kvm_booke206_ref_release(ref->pfn, ref->flags);
ref->flags = 0;
}
@ -274,36 +278,23 @@ static void clear_tlb1_bitmap(struct kvmppc_vcpu_e500 *vcpu_e500)
static void clear_tlb_privs(struct kvmppc_vcpu_e500 *vcpu_e500)
{
int tlbsel = 0;
int tlbsel;
int i;
for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) {
struct tlbe_ref *ref =
&vcpu_e500->gtlb_priv[tlbsel][i].ref;
kvmppc_e500_ref_release(ref);
for (tlbsel = 0; tlbsel <= 1; tlbsel++) {
for (i = 0; i < vcpu_e500->gtlb_params[tlbsel].entries; i++) {
struct tlbe_ref *ref =
&vcpu_e500->gtlb_priv[tlbsel][i].ref;
kvmppc_e500_ref_release(ref);
}
}
}
static void clear_tlb_refs(struct kvmppc_vcpu_e500 *vcpu_e500)
{
int stlbsel = 1;
int i;
kvmppc_e500_tlbil_all(vcpu_e500);
for (i = 0; i < host_tlb_params[stlbsel].entries; i++) {
struct tlbe_ref *ref =
&vcpu_e500->tlb_refs[stlbsel][i];
kvmppc_e500_ref_release(ref);
}
clear_tlb_privs(vcpu_e500);
}
void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
clear_tlb_refs(vcpu_e500);
kvmppc_e500_tlbil_all(vcpu_e500);
clear_tlb_privs(vcpu_e500);
clear_tlb1_bitmap(vcpu_e500);
}
@ -458,8 +449,6 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
gvaddr &= ~((tsize_pages << PAGE_SHIFT) - 1);
}
/* Drop old ref and setup new one. */
kvmppc_e500_ref_release(ref);
kvmppc_e500_ref_setup(ref, gtlbe, pfn);
kvmppc_e500_setup_stlbe(&vcpu_e500->vcpu, gtlbe, tsize,
@ -507,14 +496,15 @@ static int kvmppc_e500_tlb1_map_tlb1(struct kvmppc_vcpu_e500 *vcpu_e500,
if (unlikely(vcpu_e500->host_tlb1_nv >= tlb1_max_shadow_size()))
vcpu_e500->host_tlb1_nv = 0;
vcpu_e500->tlb_refs[1][sesel] = *ref;
vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << sesel;
vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
if (vcpu_e500->h2g_tlb1_rmap[sesel]) {
unsigned int idx = vcpu_e500->h2g_tlb1_rmap[sesel];
unsigned int idx = vcpu_e500->h2g_tlb1_rmap[sesel] - 1;
vcpu_e500->g2h_tlb1_map[idx] &= ~(1ULL << sesel);
}
vcpu_e500->h2g_tlb1_rmap[sesel] = esel;
vcpu_e500->gtlb_priv[1][esel].ref.flags |= E500_TLB_BITMAP;
vcpu_e500->g2h_tlb1_map[esel] |= (u64)1 << sesel;
vcpu_e500->h2g_tlb1_rmap[sesel] = esel + 1;
WARN_ON(!(ref->flags & E500_TLB_VALID));
return sesel;
}
@ -526,13 +516,12 @@ static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
u64 gvaddr, gfn_t gfn, struct kvm_book3e_206_tlb_entry *gtlbe,
struct kvm_book3e_206_tlb_entry *stlbe, int esel)
{
struct tlbe_ref ref;
struct tlbe_ref *ref = &vcpu_e500->gtlb_priv[1][esel].ref;
int sesel;
int r;
ref.flags = 0;
r = kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, stlbe,
&ref);
ref);
if (r)
return r;
@ -544,7 +533,7 @@ static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
}
/* Otherwise map into TLB1 */
sesel = kvmppc_e500_tlb1_map_tlb1(vcpu_e500, &ref, esel);
sesel = kvmppc_e500_tlb1_map_tlb1(vcpu_e500, ref, esel);
write_stlbe(vcpu_e500, gtlbe, stlbe, 1, sesel);
return 0;
@ -565,7 +554,7 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
case 0:
priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
/* Triggers after clear_tlb_refs or on initial mapping */
/* Triggers after clear_tlb_privs or on initial mapping */
if (!(priv->ref.flags & E500_TLB_VALID)) {
kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
} else {
@ -665,35 +654,16 @@ int e500_mmu_host_init(struct kvmppc_vcpu_e500 *vcpu_e500)
host_tlb_params[0].entries / host_tlb_params[0].ways;
host_tlb_params[1].sets = 1;
vcpu_e500->tlb_refs[0] =
kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[0].entries,
GFP_KERNEL);
if (!vcpu_e500->tlb_refs[0])
goto err;
vcpu_e500->tlb_refs[1] =
kzalloc(sizeof(struct tlbe_ref) * host_tlb_params[1].entries,
GFP_KERNEL);
if (!vcpu_e500->tlb_refs[1])
goto err;
vcpu_e500->h2g_tlb1_rmap = kzalloc(sizeof(unsigned int) *
host_tlb_params[1].entries,
GFP_KERNEL);
if (!vcpu_e500->h2g_tlb1_rmap)
goto err;
return -EINVAL;
return 0;
err:
kfree(vcpu_e500->tlb_refs[0]);
kfree(vcpu_e500->tlb_refs[1]);
return -EINVAL;
}
void e500_mmu_host_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
{
kfree(vcpu_e500->h2g_tlb1_rmap);
kfree(vcpu_e500->tlb_refs[0]);
kfree(vcpu_e500->tlb_refs[1]);
}

2
arch/powerpc/kvm/powerpc.c
View File

@ -739,7 +739,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
{
if (irq->irq == KVM_INTERRUPT_UNSET) {
kvmppc_core_dequeue_external(vcpu, irq);
kvmppc_core_dequeue_external(vcpu);
return 0;
}