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KVM: PPC: e500: Stop keeping shadow TLB

Browse Source 
Instead of a fully separate set of TLB entries, keep just the
pfn and dirty status.

Signed-off-by: Liu Yu <yu.liu@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Liu Yu 2011-06-14 18:34:59 -05:00 committed by Avi Kivity
parent a4cd8b23ac
commit 08b7fa92b9
2 changed files with 154 additions and 183 deletions
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20
arch/powerpc/include/asm/kvm_e500.h
View File

@ -29,15 +29,23 @@ struct tlbe{
u32 mas7;
};
#define E500_TLB_VALID 1
#define E500_TLB_DIRTY 2
struct tlbe_priv {
pfn_t pfn;
unsigned int flags; /* E500_TLB_* */
};
struct kvmppc_vcpu_e500 {
/* Unmodified copy of the guest's TLB. */
struct tlbe *guest_tlb[E500_TLB_NUM];
/* TLB that's actually used when the guest is running. */
struct tlbe *shadow_tlb[E500_TLB_NUM];
struct tlbe *gtlb_arch[E500_TLB_NUM];
unsigned int guest_tlb_size[E500_TLB_NUM];
unsigned int shadow_tlb_size[E500_TLB_NUM];
unsigned int guest_tlb_nv[E500_TLB_NUM];
/* KVM internal information associated with each guest TLB entry */
struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
unsigned int gtlb_size[E500_TLB_NUM];
unsigned int gtlb_nv[E500_TLB_NUM];
u32 host_pid[E500_PID_NUM];
u32 pid[E500_PID_NUM];

317
arch/powerpc/kvm/e500_tlb.c
View File

@ -41,25 +41,14 @@ void kvmppc_dump_tlbs(struct kvm_vcpu *vcpu)
for (tlbsel = 0; tlbsel < 2; tlbsel++) {
printk("Guest TLB%d:\n", tlbsel);
for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) {
tlbe = &vcpu_e500->guest_tlb[tlbsel][i];
for (i = 0; i < vcpu_e500->gtlb_size[tlbsel]; i++) {
tlbe = &vcpu_e500->gtlb_arch[tlbsel][i];
if (tlbe->mas1 & MAS1_VALID)
printk(" G[%d][%3d] | %08X | %08X | %08X | %08X |\n",
tlbsel, i, tlbe->mas1, tlbe->mas2,
tlbe->mas3, tlbe->mas7);
}
}
for (tlbsel = 0; tlbsel < 2; tlbsel++) {
printk("Shadow TLB%d:\n", tlbsel);
for (i = 0; i < vcpu_e500->shadow_tlb_size[tlbsel]; i++) {
tlbe = &vcpu_e500->shadow_tlb[tlbsel][i];
if (tlbe->mas1 & MAS1_VALID)
printk(" S[%d][%3d] | %08X | %08X | %08X | %08X |\n",
tlbsel, i, tlbe->mas1, tlbe->mas2,
tlbe->mas3, tlbe->mas7);
}
}
}
static inline unsigned int tlb0_get_next_victim(
@ -67,9 +56,9 @@ static inline unsigned int tlb0_get_next_victim(
{
unsigned int victim;
victim = vcpu_e500->guest_tlb_nv[0]++;
if (unlikely(vcpu_e500->guest_tlb_nv[0] >= KVM_E500_TLB0_WAY_NUM))
vcpu_e500->guest_tlb_nv[0] = 0;
victim = vcpu_e500->gtlb_nv[0]++;
if (unlikely(vcpu_e500->gtlb_nv[0] >= KVM_E500_TLB0_WAY_NUM))
vcpu_e500->gtlb_nv[0] = 0;
return victim;
}
@ -128,10 +117,8 @@ static inline void __write_host_tlbe(struct tlbe *stlbe, uint32_t mas0)
}
static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
int tlbsel, int esel, struct tlbe *stlbe)
{
struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
if (tlbsel == 0) {
__write_host_tlbe(stlbe,
MAS0_TLBSEL(0) |
@ -141,6 +128,8 @@ static inline void write_host_tlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
MAS0_TLBSEL(1) |
MAS0_ESEL(to_htlb1_esel(esel)));
}
trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2,
stlbe->mas3, stlbe->mas7);
}
void kvmppc_map_magic(struct kvm_vcpu *vcpu)
@ -178,8 +167,8 @@ static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500,
int i;
/* XXX Replace loop with fancy data structures. */
for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++) {
struct tlbe *tlbe = &vcpu_e500->guest_tlb[tlbsel][i];
for (i = 0; i < vcpu_e500->gtlb_size[tlbsel]; i++) {
struct tlbe *tlbe = &vcpu_e500->gtlb_arch[tlbsel][i];
unsigned int tid;
if (eaddr < get_tlb_eaddr(tlbe))
@ -204,60 +193,33 @@ static int kvmppc_e500_tlb_index(struct kvmppc_vcpu_e500 *vcpu_e500,
return -1;
}
static void kvmppc_e500_shadow_release(struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
static inline void kvmppc_e500_priv_setup(struct tlbe_priv *priv,
struct tlbe *gtlbe,
pfn_t pfn)
{
struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
unsigned long pfn;
priv->pfn = pfn;
priv->flags = E500_TLB_VALID;
pfn = stlbe->mas3 >> PAGE_SHIFT;
pfn |= stlbe->mas7 << (32 - PAGE_SHIFT);
if (get_tlb_v(stlbe)) {
if (tlbe_is_writable(stlbe))
kvm_release_pfn_dirty(pfn);
else
kvm_release_pfn_clean(pfn);
}
if (tlbe_is_writable(gtlbe))
priv->flags |= E500_TLB_DIRTY;
}
static void kvmppc_e500_stlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
static inline void kvmppc_e500_priv_release(struct tlbe_priv *priv)
{
struct tlbe *stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
if (priv->flags & E500_TLB_VALID) {
if (priv->flags & E500_TLB_DIRTY)
kvm_release_pfn_dirty(priv->pfn);
else
kvm_release_pfn_clean(priv->pfn);
kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel);
stlbe->mas1 = 0;
trace_kvm_stlb_inval(index_of(tlbsel, esel));
priv->flags = 0;
}
}
static void kvmppc_e500_tlb1_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
gva_t eaddr, gva_t eend, u32 tid)
int esel)
{
unsigned int pid = tid & 0xff;
unsigned int i;
/* XXX Replace loop with fancy data structures. */
for (i = 0; i < vcpu_e500->guest_tlb_size[1]; i++) {
struct tlbe *stlbe = &vcpu_e500->shadow_tlb[1][i];
unsigned int tid;
if (!get_tlb_v(stlbe))
continue;
if (eend < get_tlb_eaddr(stlbe))
continue;
if (eaddr > get_tlb_end(stlbe))
continue;
tid = get_tlb_tid(stlbe);
if (tid && (tid != pid))
continue;
kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i);
write_host_tlbe(vcpu_e500, 1, i);
}
mtspr(SPRN_MMUCSR0, MMUCSR0_TLB1FI);
}
static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
@ -274,7 +236,7 @@ static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
tsized = (vcpu_e500->mas4 >> 7) & 0x1f;
vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim)
| MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
| MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
vcpu_e500->mas1 = MAS1_VALID | (as ? MAS1_TS : 0)
| MAS1_TID(vcpu_e500->pid[pidsel])
| MAS1_TSIZE(tsized);
@ -287,16 +249,35 @@ static inline void kvmppc_e500_deliver_tlb_miss(struct kvm_vcpu *vcpu,
vcpu_e500->mas7 = 0;
}
static inline void kvmppc_e500_setup_stlbe(struct kvmppc_vcpu_e500 *vcpu_e500,
struct tlbe *gtlbe, int tsize,
struct tlbe_priv *priv,
u64 gvaddr, struct tlbe *stlbe)
{
pfn_t pfn = priv->pfn;
/* Force TS=1 IPROT=0 for all guest mappings. */
stlbe->mas1 = MAS1_TSIZE(tsize)
| MAS1_TID(get_tlb_tid(gtlbe)) | MAS1_TS | MAS1_VALID;
stlbe->mas2 = (gvaddr & MAS2_EPN)
| e500_shadow_mas2_attrib(gtlbe->mas2,
vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
stlbe->mas3 = ((pfn << PAGE_SHIFT) & MAS3_RPN)
| e500_shadow_mas3_attrib(gtlbe->mas3,
vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
stlbe->mas7 = (pfn >> (32 - PAGE_SHIFT)) & MAS7_RPN;
}
static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, int tlbsel, int esel)
u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, int tlbsel, int esel,
struct tlbe *stlbe)
{
struct kvm_memory_slot *slot;
struct tlbe *stlbe;
unsigned long pfn, hva;
int pfnmap = 0;
int tsize = BOOK3E_PAGESZ_4K;
stlbe = &vcpu_e500->shadow_tlb[tlbsel][esel];
struct tlbe_priv *priv;
/*
* Translate guest physical to true physical, acquiring
@ -392,35 +373,25 @@ static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
}
}
/* Drop reference to old page. */
kvmppc_e500_shadow_release(vcpu_e500, tlbsel, esel);
/* Drop old priv and setup new one. */
priv = &vcpu_e500->gtlb_priv[tlbsel][esel];
kvmppc_e500_priv_release(priv);
kvmppc_e500_priv_setup(priv, gtlbe, pfn);
/* Force TS=1 IPROT=0 for all guest mappings. */
stlbe->mas1 = MAS1_TSIZE(tsize)
| MAS1_TID(get_tlb_tid(gtlbe)) | MAS1_TS | MAS1_VALID;
stlbe->mas2 = (gvaddr & MAS2_EPN)
| e500_shadow_mas2_attrib(gtlbe->mas2,
vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
stlbe->mas3 = ((pfn << PAGE_SHIFT) & MAS3_RPN)
| e500_shadow_mas3_attrib(gtlbe->mas3,
vcpu_e500->vcpu.arch.shared->msr & MSR_PR);
stlbe->mas7 = (pfn >> (32 - PAGE_SHIFT)) & MAS7_RPN;
trace_kvm_stlb_write(index_of(tlbsel, esel), stlbe->mas1, stlbe->mas2,
stlbe->mas3, stlbe->mas7);
kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, tsize, priv, gvaddr, stlbe);
}
/* XXX only map the one-one case, for now use TLB0 */
static int kvmppc_e500_stlbe_map(struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
static int kvmppc_e500_tlb0_map(struct kvmppc_vcpu_e500 *vcpu_e500,
int esel, struct tlbe *stlbe)
{
struct tlbe *gtlbe;
gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
gtlbe = &vcpu_e500->gtlb_arch[0][esel];
kvmppc_e500_shadow_map(vcpu_e500, get_tlb_eaddr(gtlbe),
get_tlb_raddr(gtlbe) >> PAGE_SHIFT,
gtlbe, tlbsel, esel);
gtlbe, 0, esel, stlbe);
return esel;
}
@ -429,16 +400,16 @@ static int kvmppc_e500_stlbe_map(struct kvmppc_vcpu_e500 *vcpu_e500,
* the shadow TLB. */
/* XXX for both one-one and one-to-many , for now use TLB1 */
static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe)
u64 gvaddr, gfn_t gfn, struct tlbe *gtlbe, struct tlbe *stlbe)
{
unsigned int victim;
victim = vcpu_e500->guest_tlb_nv[1]++;
victim = vcpu_e500->gtlb_nv[1]++;
if (unlikely(vcpu_e500->guest_tlb_nv[1] >= tlb1_max_shadow_size()))
vcpu_e500->guest_tlb_nv[1] = 0;
if (unlikely(vcpu_e500->gtlb_nv[1] >= tlb1_max_shadow_size()))
vcpu_e500->gtlb_nv[1] = 0;
kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, victim);
kvmppc_e500_shadow_map(vcpu_e500, gvaddr, gfn, gtlbe, 1, victim, stlbe);
return victim;
}
@ -449,33 +420,19 @@ static int kvmppc_e500_tlb1_map(struct kvmppc_vcpu_e500 *vcpu_e500,
void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode)
{
if (usermode) {
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
int i;
/* XXX Replace loop with fancy data structures. */
for (i = 0; i < tlb1_max_shadow_size(); i++)
kvmppc_e500_stlbe_invalidate(vcpu_e500, 1, i);
_tlbil_all();
}
}
static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
static inline int kvmppc_e500_gtlbe_invalidate(
struct kvmppc_vcpu_e500 *vcpu_e500,
int tlbsel, int esel)
{
struct tlbe *gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
struct tlbe *gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel];
if (unlikely(get_tlb_iprot(gtlbe)))
return -1;
if (tlbsel == 1) {
kvmppc_e500_tlb1_invalidate(vcpu_e500, get_tlb_eaddr(gtlbe),
get_tlb_end(gtlbe),
get_tlb_tid(gtlbe));
} else {
kvmppc_e500_stlbe_invalidate(vcpu_e500, tlbsel, esel);
}
gtlbe->mas1 = 0;
return 0;
@ -486,10 +443,10 @@ int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value)
int esel;
if (value & MMUCSR0_TLB0FI)
for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++)
for (esel = 0; esel < vcpu_e500->gtlb_size[0]; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel);
if (value & MMUCSR0_TLB1FI)
for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++)
for (esel = 0; esel < vcpu_e500->gtlb_size[1]; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel);
_tlbil_all();
@ -513,7 +470,7 @@ int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb)
if (ia) {
/* invalidate all entries */
for (esel = 0; esel < vcpu_e500->guest_tlb_size[tlbsel]; esel++)
for (esel = 0; esel < vcpu_e500->gtlb_size[tlbsel]; esel++)
kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel);
} else {
ea &= 0xfffff000;
@ -537,9 +494,9 @@ int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu)
tlbsel = get_tlb_tlbsel(vcpu_e500);
esel = get_tlb_esel(vcpu_e500, tlbsel);
gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel];
vcpu_e500->mas0 &= ~MAS0_NV(~0);
vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
vcpu_e500->mas0 |= MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
vcpu_e500->mas1 = gtlbe->mas1;
vcpu_e500->mas2 = gtlbe->mas2;
vcpu_e500->mas3 = gtlbe->mas3;
@ -562,14 +519,14 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb)
for (tlbsel = 0; tlbsel < 2; tlbsel++) {
esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, as);
if (esel >= 0) {
gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel];
break;
}
}
if (gtlbe) {
vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(esel)
| MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
| MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
vcpu_e500->mas1 = gtlbe->mas1;
vcpu_e500->mas2 = gtlbe->mas2;
vcpu_e500->mas3 = gtlbe->mas3;
@ -582,7 +539,7 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb)
victim = (tlbsel == 0) ? tlb0_get_next_victim(vcpu_e500) : 0;
vcpu_e500->mas0 = MAS0_TLBSEL(tlbsel) | MAS0_ESEL(victim)
| MAS0_NV(vcpu_e500->guest_tlb_nv[tlbsel]);
| MAS0_NV(vcpu_e500->gtlb_nv[tlbsel]);
vcpu_e500->mas1 = (vcpu_e500->mas6 & MAS6_SPID0)
| (vcpu_e500->mas6 & (MAS6_SAS ? MAS1_TS : 0))
| (vcpu_e500->mas4 & MAS4_TSIZED(~0));
@ -599,23 +556,16 @@ int kvmppc_e500_emul_tlbsx(struct kvm_vcpu *vcpu, int rb)
int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
u64 eaddr;
u64 raddr;
u32 tid;
struct tlbe *gtlbe;
int tlbsel, esel, stlbsel, sesel;
int tlbsel, esel;
tlbsel = get_tlb_tlbsel(vcpu_e500);
esel = get_tlb_esel(vcpu_e500, tlbsel);
gtlbe = &vcpu_e500->guest_tlb[tlbsel][esel];
gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel];
if (get_tlb_v(gtlbe) && tlbsel == 1) {
eaddr = get_tlb_eaddr(gtlbe);
tid = get_tlb_tid(gtlbe);
kvmppc_e500_tlb1_invalidate(vcpu_e500, eaddr,
get_tlb_end(gtlbe), tid);
}
if (get_tlb_v(gtlbe) && tlbsel == 1)
kvmppc_e500_tlb1_invalidate(vcpu_e500, esel);
gtlbe->mas1 = vcpu_e500->mas1;
gtlbe->mas2 = vcpu_e500->mas2;
@ -627,6 +577,11 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
/* Invalidate shadow mappings for the about-to-be-clobbered TLBE. */
if (tlbe_is_host_safe(vcpu, gtlbe)) {
struct tlbe stlbe;
int stlbsel, sesel;
u64 eaddr;
u64 raddr;
switch (tlbsel) {
case 0:
/* TLB0 */
@ -634,7 +589,7 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
gtlbe->mas1 |= MAS1_TSIZE(BOOK3E_PAGESZ_4K);
stlbsel = 0;
sesel = kvmppc_e500_stlbe_map(vcpu_e500, 0, esel);
sesel = kvmppc_e500_tlb0_map(vcpu_e500, esel, &stlbe);
break;
@ -649,13 +604,13 @@ int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *vcpu)
* are mapped on the fly. */
stlbsel = 1;
sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr,
raddr >> PAGE_SHIFT, gtlbe);
raddr >> PAGE_SHIFT, gtlbe, &stlbe);
break;
default:
BUG();
}
write_host_tlbe(vcpu_e500, stlbsel, sesel);
write_host_tlbe(vcpu_e500, stlbsel, sesel, &stlbe);
}
kvmppc_set_exit_type(vcpu, EMULATED_TLBWE_EXITS);
@ -695,7 +650,7 @@ gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index,
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
struct tlbe *gtlbe =
&vcpu_e500->guest_tlb[tlbsel_of(index)][esel_of(index)];
&vcpu_e500->gtlb_arch[tlbsel_of(index)][esel_of(index)];
u64 pgmask = get_tlb_bytes(gtlbe) - 1;
return get_tlb_raddr(gtlbe) | (eaddr & pgmask);
@ -703,38 +658,36 @@ gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int index,
void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
int tlbsel, i;
for (tlbsel = 0; tlbsel < 2; tlbsel++)
for (i = 0; i < vcpu_e500->guest_tlb_size[tlbsel]; i++)
kvmppc_e500_shadow_release(vcpu_e500, tlbsel, i);
/* discard all guest mapping */
_tlbil_all();
}
void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
unsigned int index)
{
struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu);
struct tlbe_priv *priv;
struct tlbe *gtlbe, stlbe;
int tlbsel = tlbsel_of(index);
int esel = esel_of(index);
int stlbsel, sesel;
gtlbe = &vcpu_e500->gtlb_arch[tlbsel][esel];
switch (tlbsel) {
case 0:
stlbsel = 0;
sesel = esel;
priv = &vcpu_e500->gtlb_priv[stlbsel][sesel];
kvmppc_e500_setup_stlbe(vcpu_e500, gtlbe, BOOK3E_PAGESZ_4K,
priv, eaddr, &stlbe);
break;
case 1: {
gfn_t gfn = gpaddr >> PAGE_SHIFT;
struct tlbe *gtlbe
= &vcpu_e500->guest_tlb[tlbsel][esel];
stlbsel = 1;
sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn, gtlbe);
sesel = kvmppc_e500_tlb1_map(vcpu_e500, eaddr, gfn,
gtlbe, &stlbe);
break;
}
@ -742,7 +695,8 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 eaddr, gpa_t gpaddr,
BUG();
break;
}
write_host_tlbe(vcpu_e500, stlbsel, sesel);
write_host_tlbe(vcpu_e500, stlbsel, sesel, &stlbe);
}
int kvmppc_e500_tlb_search(struct kvm_vcpu *vcpu,
@ -773,14 +727,14 @@ void kvmppc_e500_tlb_setup(struct kvmppc_vcpu_e500 *vcpu_e500)
struct tlbe *tlbe;
/* Insert large initial mapping for guest. */
tlbe = &vcpu_e500->guest_tlb[1][0];
tlbe = &vcpu_e500->gtlb_arch[1][0];
tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_256M);
tlbe->mas2 = 0;
tlbe->mas3 = E500_TLB_SUPER_PERM_MASK;
tlbe->mas7 = 0;
/* 4K map for serial output. Used by kernel wrapper. */
tlbe = &vcpu_e500->guest_tlb[1][1];
tlbe = &vcpu_e500->gtlb_arch[1][1];
tlbe->mas1 = MAS1_VALID | MAS1_TSIZE(BOOK3E_PAGESZ_4K);
tlbe->mas2 = (0xe0004500 & 0xFFFFF000) | MAS2_I | MAS2_G;
tlbe->mas3 = (0xe0004500 & 0xFFFFF000) | E500_TLB_SUPER_PERM_MASK;
@ -791,52 +745,61 @@ int kvmppc_e500_tlb_init(struct kvmppc_vcpu_e500 *vcpu_e500)
{
tlb1_entry_num = mfspr(SPRN_TLB1CFG) & 0xFFF;
vcpu_e500->guest_tlb_size[0] = KVM_E500_TLB0_SIZE;
vcpu_e500->guest_tlb[0] =
vcpu_e500->gtlb_size[0] = KVM_E500_TLB0_SIZE;
vcpu_e500->gtlb_arch[0] =
kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
if (vcpu_e500->guest_tlb[0] == NULL)
if (vcpu_e500->gtlb_arch[0] == NULL)
goto err_out;
vcpu_e500->shadow_tlb_size[0] = KVM_E500_TLB0_SIZE;
vcpu_e500->shadow_tlb[0] =
kzalloc(sizeof(struct tlbe) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
if (vcpu_e500->shadow_tlb[0] == NULL)
vcpu_e500->gtlb_size[1] = KVM_E500_TLB1_SIZE;
vcpu_e500->gtlb_arch[1] =
kzalloc(sizeof(struct tlbe) * KVM_E500_TLB1_SIZE, GFP_KERNEL);
if (vcpu_e500->gtlb_arch[1] == NULL)
goto err_out_guest0;
vcpu_e500->guest_tlb_size[1] = KVM_E500_TLB1_SIZE;
vcpu_e500->guest_tlb[1] =
kzalloc(sizeof(struct tlbe) * KVM_E500_TLB1_SIZE, GFP_KERNEL);
if (vcpu_e500->guest_tlb[1] == NULL)
goto err_out_shadow0;
vcpu_e500->shadow_tlb_size[1] = tlb1_entry_num;
vcpu_e500->shadow_tlb[1] =
kzalloc(sizeof(struct tlbe) * tlb1_entry_num, GFP_KERNEL);
if (vcpu_e500->shadow_tlb[1] == NULL)
vcpu_e500->gtlb_priv[0] = (struct tlbe_priv *)
kzalloc(sizeof(struct tlbe_priv) * KVM_E500_TLB0_SIZE, GFP_KERNEL);
if (vcpu_e500->gtlb_priv[0] == NULL)
goto err_out_guest1;
vcpu_e500->gtlb_priv[1] = (struct tlbe_priv *)
kzalloc(sizeof(struct tlbe_priv) * KVM_E500_TLB1_SIZE, GFP_KERNEL);
if (vcpu_e500->gtlb_priv[1] == NULL)
goto err_out_priv0;
/* Init TLB configuration register */
vcpu_e500->tlb0cfg = mfspr(SPRN_TLB0CFG) & ~0xfffUL;
vcpu_e500->tlb0cfg |= vcpu_e500->guest_tlb_size[0];
vcpu_e500->tlb0cfg |= vcpu_e500->gtlb_size[0];
vcpu_e500->tlb1cfg = mfspr(SPRN_TLB1CFG) & ~0xfffUL;
vcpu_e500->tlb1cfg |= vcpu_e500->guest_tlb_size[1];
vcpu_e500->tlb1cfg |= vcpu_e500->gtlb_size[1];
return 0;
err_out_priv0:
kfree(vcpu_e500->gtlb_priv[0]);
err_out_guest1:
kfree(vcpu_e500->guest_tlb[1]);
err_out_shadow0:
kfree(vcpu_e500->shadow_tlb[0]);
kfree(vcpu_e500->gtlb_arch[1]);
err_out_guest0:
kfree(vcpu_e500->guest_tlb[0]);
kfree(vcpu_e500->gtlb_arch[0]);
err_out:
return -1;
}
void kvmppc_e500_tlb_uninit(struct kvmppc_vcpu_e500 *vcpu_e500)
{
kfree(vcpu_e500->shadow_tlb[1]);
kfree(vcpu_e500->guest_tlb[1]);
kfree(vcpu_e500->shadow_tlb[0]);
kfree(vcpu_e500->guest_tlb[0]);
int stlbsel, i;
/* release all privs */
for (stlbsel = 0; stlbsel < 2; stlbsel++)
for (i = 0; i < vcpu_e500->gtlb_size[stlbsel]; i++) {
struct tlbe_priv *priv =
&vcpu_e500->gtlb_priv[stlbsel][i];
kvmppc_e500_priv_release(priv);
}
/* discard all guest mapping */
_tlbil_all();
kfree(vcpu_e500->gtlb_arch[1]);
kfree(vcpu_e500->gtlb_arch[0]);
}