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-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_hv.c6
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_radix.c32
-rw-r--r--arch/powerpc/kvm/book3s_64_vio.c21
-rw-r--r--arch/powerpc/kvm/book3s_64_vio_hv.c12
-rw-r--r--arch/powerpc/kvm/book3s_hv.c29
-rw-r--r--arch/powerpc/kvm/book3s_hv_rm_mmu.c20
-rw-r--r--arch/powerpc/kvm/book3s_hv_rmhandlers.S13
-rw-r--r--arch/powerpc/kvm/e500.c8
-rw-r--r--arch/powerpc/kvm/e500_mmu_host.c3
-rw-r--r--arch/powerpc/kvm/e500mc.c4
-rw-r--r--arch/powerpc/kvm/powerpc.c5
11 files changed, 105 insertions, 48 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index b42812e014c0..7c62967d672c 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -37,6 +37,7 @@
#include <asm/synch.h>
#include <asm/ppc-opcode.h>
#include <asm/cputable.h>
+#include <asm/pte-walk.h>
#include "trace_hv.h"
@@ -599,8 +600,8 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
* hugepage split and collapse.
*/
local_irq_save(flags);
- ptep = find_linux_pte_or_hugepte(current->mm->pgd,
- hva, NULL, NULL);
+ ptep = find_current_mm_pte(current->mm->pgd,
+ hva, NULL, NULL);
if (ptep) {
pte = kvmppc_read_update_linux_pte(ptep, 1);
if (__pte_write(pte))
@@ -1940,6 +1941,7 @@ int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *ghf)
rwflag = (ghf->flags & KVM_GET_HTAB_WRITE) ? O_WRONLY : O_RDONLY;
ret = anon_inode_getfd("kvm-htab", &kvm_htab_fops, ctx, rwflag | O_CLOEXEC);
if (ret < 0) {
+ kfree(ctx);
kvm_put_kvm(kvm);
return ret;
}
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c
index f6b3e67c5762..c5d7435455f1 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -17,6 +17,7 @@
#include <asm/mmu.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
+#include <asm/pte-walk.h>
/*
* Supported radix tree geometry.
@@ -322,13 +323,13 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
gpa = vcpu->arch.fault_gpa & ~0xfffUL;
gpa &= ~0xF000000000000000ul;
gfn = gpa >> PAGE_SHIFT;
- if (!(dsisr & DSISR_PGDIRFAULT))
+ if (!(dsisr & DSISR_PRTABLE_FAULT))
gpa |= ea & 0xfff;
memslot = gfn_to_memslot(kvm, gfn);
/* No memslot means it's an emulated MMIO region */
if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID)) {
- if (dsisr & (DSISR_PGDIRFAULT | DSISR_BADACCESS |
+ if (dsisr & (DSISR_PRTABLE_FAULT | DSISR_BADACCESS |
DSISR_SET_RC)) {
/*
* Bad address in guest page table tree, or other
@@ -359,8 +360,7 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (writing)
pgflags |= _PAGE_DIRTY;
local_irq_save(flags);
- ptep = __find_linux_pte_or_hugepte(current->mm->pgd, hva,
- NULL, NULL);
+ ptep = find_current_mm_pte(current->mm->pgd, hva, NULL, NULL);
if (ptep) {
pte = READ_ONCE(*ptep);
if (pte_present(pte) &&
@@ -374,8 +374,12 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
spin_unlock(&kvm->mmu_lock);
return RESUME_GUEST;
}
- ptep = __find_linux_pte_or_hugepte(kvm->arch.pgtable,
- gpa, NULL, &shift);
+ /*
+ * We are walking the secondary page table here. We can do this
+ * without disabling irq.
+ */
+ ptep = __find_linux_pte(kvm->arch.pgtable,
+ gpa, NULL, &shift);
if (ptep && pte_present(*ptep)) {
kvmppc_radix_update_pte(kvm, ptep, 0, pgflags,
gpa, shift);
@@ -427,8 +431,8 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
pgflags |= _PAGE_WRITE;
} else {
local_irq_save(flags);
- ptep = __find_linux_pte_or_hugepte(current->mm->pgd,
- hva, NULL, NULL);
+ ptep = find_current_mm_pte(current->mm->pgd,
+ hva, NULL, NULL);
if (ptep && pte_write(*ptep) && pte_dirty(*ptep))
pgflags |= _PAGE_WRITE;
local_irq_restore(flags);
@@ -499,8 +503,7 @@ int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
unsigned int shift;
unsigned long old;
- ptep = __find_linux_pte_or_hugepte(kvm->arch.pgtable, gpa,
- NULL, &shift);
+ ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep)) {
old = kvmppc_radix_update_pte(kvm, ptep, _PAGE_PRESENT, 0,
gpa, shift);
@@ -525,8 +528,7 @@ int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
unsigned int shift;
int ref = 0;
- ptep = __find_linux_pte_or_hugepte(kvm->arch.pgtable, gpa,
- NULL, &shift);
+ ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_young(*ptep)) {
kvmppc_radix_update_pte(kvm, ptep, _PAGE_ACCESSED, 0,
gpa, shift);
@@ -545,8 +547,7 @@ int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
unsigned int shift;
int ref = 0;
- ptep = __find_linux_pte_or_hugepte(kvm->arch.pgtable, gpa,
- NULL, &shift);
+ ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_young(*ptep))
ref = 1;
return ref;
@@ -562,8 +563,7 @@ static int kvm_radix_test_clear_dirty(struct kvm *kvm,
unsigned int shift;
int ret = 0;
- ptep = __find_linux_pte_or_hugepte(kvm->arch.pgtable, gpa,
- NULL, &shift);
+ ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_dirty(*ptep)) {
ret = 1;
if (shift)
diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 53766e2bc029..8f2da8bba737 100644
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -265,8 +265,11 @@ static int kvm_spapr_tce_release(struct inode *inode, struct file *filp)
{
struct kvmppc_spapr_tce_table *stt = filp->private_data;
struct kvmppc_spapr_tce_iommu_table *stit, *tmp;
+ struct kvm *kvm = stt->kvm;
+ mutex_lock(&kvm->lock);
list_del_rcu(&stt->list);
+ mutex_unlock(&kvm->lock);
list_for_each_entry_safe(stit, tmp, &stt->iommu_tables, next) {
WARN_ON(!kref_read(&stit->kref));
@@ -298,7 +301,6 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
unsigned long npages, size;
int ret = -ENOMEM;
int i;
- int fd = -1;
if (!args->size)
return -EINVAL;
@@ -328,11 +330,6 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
goto fail;
}
- ret = fd = anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
- stt, O_RDWR | O_CLOEXEC);
- if (ret < 0)
- goto fail;
-
mutex_lock(&kvm->lock);
/* Check this LIOBN hasn't been previously allocated */
@@ -344,17 +341,19 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
}
}
- if (!ret) {
+ if (!ret)
+ ret = anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops,
+ stt, O_RDWR | O_CLOEXEC);
+
+ if (ret >= 0) {
list_add_rcu(&stt->list, &kvm->arch.spapr_tce_tables);
kvm_get_kvm(kvm);
}
mutex_unlock(&kvm->lock);
- if (!ret)
- return fd;
-
- put_unused_fd(fd);
+ if (ret >= 0)
+ return ret;
fail:
for (i = 0; i < npages; i++)
diff --git a/arch/powerpc/kvm/book3s_64_vio_hv.c b/arch/powerpc/kvm/book3s_64_vio_hv.c
index 3adfd2f5301c..c32e9bfe75b1 100644
--- a/arch/powerpc/kvm/book3s_64_vio_hv.c
+++ b/arch/powerpc/kvm/book3s_64_vio_hv.c
@@ -39,6 +39,7 @@
#include <asm/udbg.h>
#include <asm/iommu.h>
#include <asm/tce.h>
+#include <asm/pte-walk.h>
#ifdef CONFIG_BUG
@@ -353,7 +354,16 @@ static long kvmppc_rm_ua_to_hpa(struct kvm_vcpu *vcpu,
pte_t *ptep, pte;
unsigned shift = 0;
- ptep = __find_linux_pte_or_hugepte(vcpu->arch.pgdir, ua, NULL, &shift);
+ /*
+ * Called in real mode with MSR_EE = 0. We are safe here.
+ * It is ok to do the lookup with arch.pgdir here, because
+ * we are doing this on secondary cpus and current task there
+ * is not the hypervisor. Also this is safe against THP in the
+ * host, because an IPI to primary thread will wait for the secondary
+ * to exit which will agains result in the below page table walk
+ * to finish.
+ */
+ ptep = __find_linux_pte(vcpu->arch.pgdir, ua, NULL, &shift);
if (!ptep || !pte_present(*ptep))
return -ENXIO;
pte = *ptep;
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 359c79cdf0cc..18e974a34fce 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -485,7 +485,13 @@ static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu,
switch (subfunc) {
case H_VPA_REG_VPA: /* register VPA */
- if (len < sizeof(struct lppaca))
+ /*
+ * The size of our lppaca is 1kB because of the way we align
+ * it for the guest to avoid crossing a 4kB boundary. We only
+ * use 640 bytes of the structure though, so we should accept
+ * clients that set a size of 640.
+ */
+ if (len < 640)
break;
vpap = &tvcpu->arch.vpa;
err = 0;
@@ -2111,6 +2117,15 @@ static int kvmppc_grab_hwthread(int cpu)
struct paca_struct *tpaca;
long timeout = 10000;
+ /*
+ * ISA v3.0 idle routines do not set hwthread_state or test
+ * hwthread_req, so they can not grab idle threads.
+ */
+ if (cpu_has_feature(CPU_FTR_ARCH_300)) {
+ WARN(1, "KVM: can not control sibling threads\n");
+ return -EBUSY;
+ }
+
tpaca = &paca[cpu];
/* Ensure the thread won't go into the kernel if it wakes */
@@ -2145,10 +2160,12 @@ static void kvmppc_release_hwthread(int cpu)
struct paca_struct *tpaca;
tpaca = &paca[cpu];
- tpaca->kvm_hstate.hwthread_req = 0;
tpaca->kvm_hstate.kvm_vcpu = NULL;
tpaca->kvm_hstate.kvm_vcore = NULL;
tpaca->kvm_hstate.kvm_split_mode = NULL;
+ if (!cpu_has_feature(CPU_FTR_ARCH_300))
+ tpaca->kvm_hstate.hwthread_req = 0;
+
}
static void radix_flush_cpu(struct kvm *kvm, int cpu, struct kvm_vcpu *vcpu)
@@ -3325,6 +3342,14 @@ static int kvm_vm_ioctl_get_smmu_info_hv(struct kvm *kvm,
if (radix_enabled())
return -EINVAL;
+ /*
+ * POWER7, POWER8 and POWER9 all support 32 storage keys for data.
+ * POWER7 doesn't support keys for instruction accesses,
+ * POWER8 and POWER9 do.
+ */
+ info->data_keys = 32;
+ info->instr_keys = cpu_has_feature(CPU_FTR_ARCH_207S) ? 32 : 0;
+
info->flags = KVM_PPC_PAGE_SIZES_REAL;
if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
info->flags |= KVM_PPC_1T_SEGMENTS;
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 584c74c8119f..4efe364f1188 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -22,6 +22,7 @@
#include <asm/hvcall.h>
#include <asm/synch.h>
#include <asm/ppc-opcode.h>
+#include <asm/pte-walk.h>
/* Translate address of a vmalloc'd thing to a linear map address */
static void *real_vmalloc_addr(void *x)
@@ -31,9 +32,9 @@ static void *real_vmalloc_addr(void *x)
/*
* assume we don't have huge pages in vmalloc space...
* So don't worry about THP collapse/split. Called
- * Only in realmode, hence won't need irq_save/restore.
+ * Only in realmode with MSR_EE = 0, hence won't need irq_save/restore.
*/
- p = __find_linux_pte_or_hugepte(swapper_pg_dir, addr, NULL, NULL);
+ p = find_init_mm_pte(addr, NULL);
if (!p || !pte_present(*p))
return NULL;
addr = (pte_pfn(*p) << PAGE_SHIFT) | (addr & ~PAGE_MASK);
@@ -230,14 +231,13 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
* If we had a page table table change after lookup, we would
* retry via mmu_notifier_retry.
*/
- if (realmode)
- ptep = __find_linux_pte_or_hugepte(pgdir, hva, NULL,
- &hpage_shift);
- else {
+ if (!realmode)
local_irq_save(irq_flags);
- ptep = find_linux_pte_or_hugepte(pgdir, hva, NULL,
- &hpage_shift);
- }
+ /*
+ * If called in real mode we have MSR_EE = 0. Otherwise
+ * we disable irq above.
+ */
+ ptep = __find_linux_pte(pgdir, hva, NULL, &hpage_shift);
if (ptep) {
pte_t pte;
unsigned int host_pte_size;
@@ -269,7 +269,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
if (!realmode)
local_irq_restore(irq_flags);
- ptel &= ~(HPTE_R_PP0 - psize);
+ ptel &= HPTE_R_KEY | HPTE_R_PP0 | (psize-1);
ptel |= pa;
if (pa)
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 9c9c983b864f..663a4a861e7f 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -149,9 +149,11 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
subf r4, r4, r3
mtspr SPRN_DEC, r4
+BEGIN_FTR_SECTION
/* hwthread_req may have got set by cede or no vcpu, so clear it */
li r0, 0
stb r0, HSTATE_HWTHREAD_REQ(r13)
+END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300)
/*
* For external interrupts we need to call the Linux
@@ -314,6 +316,7 @@ kvm_novcpu_exit:
* Relocation is off and most register values are lost.
* r13 points to the PACA.
* r3 contains the SRR1 wakeup value, SRR1 is trashed.
+ * This is not used by ISAv3.0B processors.
*/
.globl kvm_start_guest
kvm_start_guest:
@@ -432,6 +435,9 @@ kvm_secondary_got_guest:
* While waiting we also need to check if we get given a vcpu to run.
*/
kvm_no_guest:
+BEGIN_FTR_SECTION
+ twi 31,0,0
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
lbz r3, HSTATE_HWTHREAD_REQ(r13)
cmpwi r3, 0
bne 53f
@@ -976,7 +982,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_300)
#ifdef CONFIG_KVM_XICS
/* We are entering the guest on that thread, push VCPU to XIVE */
ld r10, HSTATE_XIVE_TIMA_PHYS(r13)
- cmpldi cr0, r10, r0
+ cmpldi cr0, r10, 0
beq no_xive
ld r11, VCPU_XIVE_SAVED_STATE(r4)
li r9, TM_QW1_OS
@@ -1280,7 +1286,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
cmpwi r12,BOOK3S_INTERRUPT_HV_DECREMENTER
bne 2f
mfspr r3,SPRN_HDEC
- cmpwi r3,0
+ EXTEND_HDEC(r3)
+ cmpdi r3,0
mr r4,r9
bge fast_guest_return
2:
@@ -2512,8 +2519,10 @@ kvm_do_nap:
clrrdi r0, r0, 1
mtspr SPRN_CTRLT, r0
+BEGIN_FTR_SECTION
li r0,1
stb r0,HSTATE_HWTHREAD_REQ(r13)
+END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300)
mfspr r5,SPRN_LPCR
ori r5,r5,LPCR_PECE0 | LPCR_PECE1
BEGIN_FTR_SECTION
diff --git a/arch/powerpc/kvm/e500.c b/arch/powerpc/kvm/e500.c
index 32fdab57d604..f9f6468f4171 100644
--- a/arch/powerpc/kvm/e500.c
+++ b/arch/powerpc/kvm/e500.c
@@ -455,16 +455,20 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_e500(struct kvm *kvm,
if (err)
goto free_vcpu;
- if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL)
+ if (kvmppc_e500_id_table_alloc(vcpu_e500) == NULL) {
+ err = -ENOMEM;
goto uninit_vcpu;
+ }
err = kvmppc_e500_tlb_init(vcpu_e500);
if (err)
goto uninit_id;
vcpu->arch.shared = (void*)__get_free_page(GFP_KERNEL|__GFP_ZERO);
- if (!vcpu->arch.shared)
+ if (!vcpu->arch.shared) {
+ err = -ENOMEM;
goto uninit_tlb;
+ }
return vcpu;
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index 77fd043b3ecc..c6c734424c70 100644
--- a/arch/powerpc/kvm/e500_mmu_host.c
+++ b/arch/powerpc/kvm/e500_mmu_host.c
@@ -30,6 +30,7 @@
#include <linux/vmalloc.h>
#include <linux/hugetlb.h>
#include <asm/kvm_ppc.h>
+#include <asm/pte-walk.h>
#include "e500.h"
#include "timing.h"
@@ -476,7 +477,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
* can't run hence pfn won't change.
*/
local_irq_save(flags);
- ptep = find_linux_pte_or_hugepte(pgdir, hva, NULL, NULL);
+ ptep = find_linux_pte(pgdir, hva, NULL, NULL);
if (ptep) {
pte_t pte = READ_ONCE(*ptep);
diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c
index f48a0c22e8f9..d0b6b5788afc 100644
--- a/arch/powerpc/kvm/e500mc.c
+++ b/arch/powerpc/kvm/e500mc.c
@@ -331,8 +331,10 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_e500mc(struct kvm *kvm,
goto uninit_vcpu;
vcpu->arch.shared = (void *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
- if (!vcpu->arch.shared)
+ if (!vcpu->arch.shared) {
+ err = -ENOMEM;
goto uninit_tlb;
+ }
return vcpu;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 1a75c0b5f4ca..3480faaf1ef8 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -58,6 +58,11 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
return !!(v->arch.pending_exceptions) || kvm_request_pending(v);
}
+bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
+{
+ return false;
+}
+
int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
{
return 1;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-06-11 06:43:29 +0200