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Merge tag 'kvm-ppc-fixes-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc into kvm-master

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PPC KVM fix for 5.5

- Fix a bug where we try to do an ultracall on a system without an
  ultravisor.
This commit is contained in:
Paolo Bonzini
2019-12-22 13:18:15 +01:00
parent 19a049f1a4 d89c69f42b
commit d68321dec1
73 changed files with 2720 additions and 704 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/virt/kvm/api.txt
+22 -1
View File
@@ -5,7 +5,7 @@ The Definitive KVM (Kernel-based Virtual Machine) API Documentation
----------------------
The kvm API is a set of ioctls that are issued to control various aspects
of a virtual machine. The ioctls belong to three classes:
of a virtual machine. The ioctls belong to the following classes:
- System ioctls: These query and set global attributes which affect the
whole kvm subsystem. In addition a system ioctl is used to create
@@ -3002,6 +3002,9 @@ can be determined by querying the KVM_CAP_GUEST_DEBUG_HW_BPS and
KVM_CAP_GUEST_DEBUG_HW_WPS capabilities which return a positive number
indicating the number of supported registers.
For ppc, the KVM_CAP_PPC_GUEST_DEBUG_SSTEP capability indicates whether
the single-step debug event (KVM_GUESTDBG_SINGLESTEP) is supported.
When debug events exit the main run loop with the reason
KVM_EXIT_DEBUG with the kvm_debug_exit_arch part of the kvm_run
structure containing architecture specific debug information.
@@ -4146,6 +4149,24 @@ Valid values for 'action':
#define KVM_PMU_EVENT_ALLOW 0
#define KVM_PMU_EVENT_DENY 1
4.121 KVM_PPC_SVM_OFF
Capability: basic
Architectures: powerpc
Type: vm ioctl
Parameters: none
Returns: 0 on successful completion,
Errors:
EINVAL: if ultravisor failed to terminate the secure guest
ENOMEM: if hypervisor failed to allocate new radix page tables for guest
This ioctl is used to turn off the secure mode of the guest or transition
the guest from secure mode to normal mode. This is invoked when the guest
is reset. This has no effect if called for a normal guest.
This ioctl issues an ultravisor call to terminate the secure guest,
unpins the VPA pages and releases all the device pages that are used to
track the secure pages by hypervisor.
5. The kvm_run structure
------------------------
Documentation/virt/kvm/devices/xics.txt
+12 -2
View File
@@ -3,9 +3,19 @@ XICS interrupt controller
Device type supported: KVM_DEV_TYPE_XICS
Groups:
KVM_DEV_XICS_SOURCES
1. KVM_DEV_XICS_GRP_SOURCES
Attributes: One per interrupt source, indexed by the source number.
2. KVM_DEV_XICS_GRP_CTRL
Attributes:
2.1 KVM_DEV_XICS_NR_SERVERS (write only)
The kvm_device_attr.addr points to a __u32 value which is the number of
interrupt server numbers (ie, highest possible vcpu id plus one).
Errors:
-EINVAL: Value greater than KVM_MAX_VCPU_ID.
-EFAULT: Invalid user pointer for attr->addr.
-EBUSY: A vcpu is already connected to the device.
This device emulates the XICS (eXternal Interrupt Controller
Specification) defined in PAPR. The XICS has a set of interrupt
sources, each identified by a 20-bit source number, and a set of
@@ -38,7 +48,7 @@ least-significant end of the word:
Each source has 64 bits of state that can be read and written using
the KVM_GET_DEVICE_ATTR and KVM_SET_DEVICE_ATTR ioctls, specifying the
KVM_DEV_XICS_SOURCES attribute group, with the attribute number being
KVM_DEV_XICS_GRP_SOURCES attribute group, with the attribute number being
the interrupt source number. The 64 bit state word has the following
bitfields, starting from the least-significant end of the word:
Documentation/virt/kvm/devices/xive.txt
+8
View File
@@ -78,6 +78,14 @@ the legacy interrupt mode, referred as XICS (POWER7/8).
migrating the VM.
Errors: none
1.3 KVM_DEV_XIVE_NR_SERVERS (write only)
The kvm_device_attr.addr points to a __u32 value which is the number of
interrupt server numbers (ie, highest possible vcpu id plus one).
Errors:
-EINVAL: Value greater than KVM_MAX_VCPU_ID.
-EFAULT: Invalid user pointer for attr->addr.
-EBUSY: A vCPU is already connected to the device.
2. KVM_DEV_XIVE_GRP_SOURCE (write only)
Initializes a new source in the XIVE device and mask it.
Attributes:
arch/powerpc/Kconfig
+17
View File
@@ -451,6 +451,23 @@ config PPC_TRANSACTIONAL_MEM
help
Support user-mode Transactional Memory on POWERPC.
config PPC_UV
bool "Ultravisor support"
depends on KVM_BOOK3S_HV_POSSIBLE
select ZONE_DEVICE
select DEV_PAGEMAP_OPS
select DEVICE_PRIVATE
select MEMORY_HOTPLUG
select MEMORY_HOTREMOVE
default n
help
This option paravirtualizes the kernel to run in POWER platforms that
supports the Protected Execution Facility (PEF). On such platforms,
the ultravisor firmware runs at a privilege level above the
hypervisor.
If unsure, say "N".
config LD_HEAD_STUB_CATCH
bool "Reserve 256 bytes to cope with linker stubs in HEAD text" if EXPERT
depends on PPC64
arch/powerpc/include/asm/hvcall.h
+9
View File
@@ -342,6 +342,15 @@
#define H_TLB_INVALIDATE 0xF808
#define H_COPY_TOFROM_GUEST 0xF80C
/* Flags for H_SVM_PAGE_IN */
#define H_PAGE_IN_SHARED 0x1
/* Platform-specific hcalls used by the Ultravisor */
#define H_SVM_PAGE_IN 0xEF00
#define H_SVM_PAGE_OUT 0xEF04
#define H_SVM_INIT_START 0xEF08
#define H_SVM_INIT_DONE 0xEF0C
/* Values for 2nd argument to H_SET_MODE */
#define H_SET_MODE_RESOURCE_SET_CIABR 1
#define H_SET_MODE_RESOURCE_SET_DAWR 2
arch/powerpc/include/asm/kvm_book3s_uvmem.h
+74
View File
@@ -0,0 +1,74 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_KVM_BOOK3S_UVMEM_H__
#define __ASM_KVM_BOOK3S_UVMEM_H__
#ifdef CONFIG_PPC_UV
int kvmppc_uvmem_init(void);
void kvmppc_uvmem_free(void);
int kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot);
void kvmppc_uvmem_slot_free(struct kvm *kvm,
const struct kvm_memory_slot *slot);
unsigned long kvmppc_h_svm_page_in(struct kvm *kvm,
unsigned long gra,
unsigned long flags,
unsigned long page_shift);
unsigned long kvmppc_h_svm_page_out(struct kvm *kvm,
unsigned long gra,
unsigned long flags,
unsigned long page_shift);
unsigned long kvmppc_h_svm_init_start(struct kvm *kvm);
unsigned long kvmppc_h_svm_init_done(struct kvm *kvm);
int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn);
void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
struct kvm *kvm);
#else
static inline int kvmppc_uvmem_init(void)
{
return 0;
}
static inline void kvmppc_uvmem_free(void) { }
static inline int
kvmppc_uvmem_slot_init(struct kvm *kvm, const struct kvm_memory_slot *slot)
{
return 0;
}
static inline void
kvmppc_uvmem_slot_free(struct kvm *kvm, const struct kvm_memory_slot *slot) { }
static inline unsigned long
kvmppc_h_svm_page_in(struct kvm *kvm, unsigned long gra,
unsigned long flags, unsigned long page_shift)
{
return H_UNSUPPORTED;
}
static inline unsigned long
kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gra,
unsigned long flags, unsigned long page_shift)
{
return H_UNSUPPORTED;
}
static inline unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
{
return H_UNSUPPORTED;
}
static inline unsigned long kvmppc_h_svm_init_done(struct kvm *kvm)
{
return H_UNSUPPORTED;
}
static inline int kvmppc_send_page_to_uv(struct kvm *kvm, unsigned long gfn)
{
return -EFAULT;
}
static inline void
kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *free,
struct kvm *kvm) { }
#endif /* CONFIG_PPC_UV */
#endif /* __ASM_KVM_BOOK3S_UVMEM_H__ */
arch/powerpc/include/asm/kvm_host.h
+6 -1
View File
@@ -275,6 +275,10 @@ struct kvm_hpt_info {
struct kvm_resize_hpt;
/* Flag values for kvm_arch.secure_guest */
#define KVMPPC_SECURE_INIT_START 0x1 /* H_SVM_INIT_START has been called */
#define KVMPPC_SECURE_INIT_DONE 0x2 /* H_SVM_INIT_DONE completed */
struct kvm_arch {
unsigned int lpid;
unsigned int smt_mode; /* # vcpus per virtual core */
@@ -330,6 +334,8 @@ struct kvm_arch {
#endif
struct kvmppc_ops *kvm_ops;
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
struct mutex uvmem_lock;
struct list_head uvmem_pfns;
struct mutex mmu_setup_lock; /* nests inside vcpu mutexes */
u64 l1_ptcr;
int max_nested_lpid;
@@ -401,7 +407,6 @@ struct kvmppc_mmu {
u32 (*mfsrin)(struct kvm_vcpu *vcpu, u32 srnum);
int (*xlate)(struct kvm_vcpu *vcpu, gva_t eaddr,
struct kvmppc_pte *pte, bool data, bool iswrite);
void (*reset_msr)(struct kvm_vcpu *vcpu);
void (*tlbie)(struct kvm_vcpu *vcpu, ulong addr, bool large);
int (*esid_to_vsid)(struct kvm_vcpu *vcpu, ulong esid, u64 *vsid);
u64 (*ea_to_vp)(struct kvm_vcpu *vcpu, gva_t eaddr, bool data);
arch/powerpc/include/asm/kvm_ppc.h
+2
View File
@@ -271,6 +271,7 @@ struct kvmppc_ops {
union kvmppc_one_reg *val);
void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
void (*vcpu_put)(struct kvm_vcpu *vcpu);
void (*inject_interrupt)(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr);
int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu);
struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id);
@@ -321,6 +322,7 @@ struct kvmppc_ops {
int size);
int (*store_to_eaddr)(struct kvm_vcpu *vcpu, ulong *eaddr, void *ptr,
int size);
int (*svm_off)(struct kvm *kvm);
};
extern struct kvmppc_ops *kvmppc_hv_ops;
arch/powerpc/include/asm/reg.h
+12
View File
@@ -748,6 +748,18 @@
#define SPRN_USPRG7 0x107 /* SPRG7 userspace read */
#define SPRN_SRR0 0x01A /* Save/Restore Register 0 */
#define SPRN_SRR1 0x01B /* Save/Restore Register 1 */
#ifdef CONFIG_PPC_BOOK3S
/*
* Bits loaded from MSR upon interrupt.
* PPC (64-bit) bits 33-36,42-47 are interrupt dependent, the others are
* loaded from MSR. The exception is that SRESET and MCE do not always load
* bit 62 (RI) from MSR. Don't use PPC_BITMASK for this because 32-bit uses
* it.
*/
#define SRR1_MSR_BITS (~0x783f0000UL)
#endif
#define SRR1_ISI_NOPT 0x40000000 /* ISI: Not found in hash */
#define SRR1_ISI_N_OR_G 0x10000000 /* ISI: Access is no-exec or G */
#define SRR1_ISI_PROT 0x08000000 /* ISI: Other protection fault */
arch/powerpc/include/asm/ultravisor-api.h
+6
View File
@@ -26,8 +26,14 @@
#define UV_WRITE_PATE 0xF104
#define UV_RETURN 0xF11C
#define UV_ESM 0xF110
#define UV_REGISTER_MEM_SLOT 0xF120
#define UV_UNREGISTER_MEM_SLOT 0xF124
#define UV_PAGE_IN 0xF128
#define UV_PAGE_OUT 0xF12C
#define UV_SHARE_PAGE 0xF130
#define UV_UNSHARE_PAGE 0xF134
#define UV_UNSHARE_ALL_PAGES 0xF140
#define UV_PAGE_INVAL 0xF138
#define UV_SVM_TERMINATE 0xF13C
#endif /* _ASM_POWERPC_ULTRAVISOR_API_H */
arch/powerpc/include/asm/ultravisor.h
+36
View File
@@ -46,4 +46,40 @@ static inline int uv_unshare_all_pages(void)
return ucall_norets(UV_UNSHARE_ALL_PAGES);
}
static inline int uv_page_in(u64 lpid, u64 src_ra, u64 dst_gpa, u64 flags,
u64 page_shift)
{
return ucall_norets(UV_PAGE_IN, lpid, src_ra, dst_gpa, flags,
page_shift);
}
static inline int uv_page_out(u64 lpid, u64 dst_ra, u64 src_gpa, u64 flags,
u64 page_shift)
{
return ucall_norets(UV_PAGE_OUT, lpid, dst_ra, src_gpa, flags,
page_shift);
}
static inline int uv_register_mem_slot(u64 lpid, u64 start_gpa, u64 size,
u64 flags, u64 slotid)
{
return ucall_norets(UV_REGISTER_MEM_SLOT, lpid, start_gpa,
size, flags, slotid);
}
static inline int uv_unregister_mem_slot(u64 lpid, u64 slotid)
{
return ucall_norets(UV_UNREGISTER_MEM_SLOT, lpid, slotid);
}
static inline int uv_page_inval(u64 lpid, u64 gpa, u64 page_shift)
{
return ucall_norets(UV_PAGE_INVAL, lpid, gpa, page_shift);
}
static inline int uv_svm_terminate(u64 lpid)
{
return ucall_norets(UV_SVM_TERMINATE, lpid);
}
#endif /* _ASM_POWERPC_ULTRAVISOR_H */
arch/powerpc/include/uapi/asm/kvm.h
+3
View File
@@ -667,6 +667,8 @@ struct kvm_ppc_cpu_char {
/* PPC64 eXternal Interrupt Controller Specification */
#define KVM_DEV_XICS_GRP_SOURCES 1 /* 64-bit source attributes */
#define KVM_DEV_XICS_GRP_CTRL 2
#define KVM_DEV_XICS_NR_SERVERS 1
/* Layout of 64-bit source attribute values */
#define KVM_XICS_DESTINATION_SHIFT 0
@@ -683,6 +685,7 @@ struct kvm_ppc_cpu_char {
#define KVM_DEV_XIVE_GRP_CTRL 1
#define KVM_DEV_XIVE_RESET 1
#define KVM_DEV_XIVE_EQ_SYNC 2
#define KVM_DEV_XIVE_NR_SERVERS 3
#define KVM_DEV_XIVE_GRP_SOURCE 2 /* 64-bit source identifier */
#define KVM_DEV_XIVE_GRP_SOURCE_CONFIG 3 /* 64-bit source identifier */
#define KVM_DEV_XIVE_GRP_EQ_CONFIG 4 /* 64-bit EQ identifier */
arch/powerpc/kvm/Makefile
+3
View File
@@ -71,6 +71,9 @@ kvm-hv-y += \
book3s_64_mmu_radix.o \
book3s_hv_nested.o
kvm-hv-$(CONFIG_PPC_UV) += \
book3s_hv_uvmem.o
kvm-hv-$(CONFIG_PPC_TRANSACTIONAL_MEM) += \
book3s_hv_tm.o
arch/powerpc/kvm/book3s.c
+1 -26
View File
@@ -74,27 +74,6 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
{ NULL }
};
void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
{
if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
ulong pc = kvmppc_get_pc(vcpu);
ulong lr = kvmppc_get_lr(vcpu);
if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
kvmppc_set_lr(vcpu, lr & ~SPLIT_HACK_MASK);
vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
}
}
EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
{
if (!is_kvmppc_hv_enabled(vcpu->kvm))
return to_book3s(vcpu)->hior;
return 0;
}
static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
unsigned long pending_now, unsigned long old_pending)
{
@@ -134,11 +113,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
{
kvmppc_unfixup_split_real(vcpu);
kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
kvmppc_set_srr1(vcpu, (kvmppc_get_msr(vcpu) & ~0x783f0000ul) | flags);
kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
vcpu->arch.mmu.reset_msr(vcpu);
vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
}
static int kvmppc_book3s_vec2irqprio(unsigned int vec)
arch/powerpc/kvm/book3s.h
+3
View File
@@ -32,4 +32,7 @@ extern void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val);
static inline void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val) {}
#endif
extern void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr);
extern void kvmppc_inject_interrupt_hv(struct kvm_vcpu *vcpu, int vec, u64 srr1_flags);
#endif
arch/powerpc/kvm/book3s_32_mmu.c
-6
View File
@@ -90,11 +90,6 @@ static u64 kvmppc_mmu_book3s_32_ea_to_vp(struct kvm_vcpu *vcpu, gva_t eaddr,
return (((u64)eaddr >> 12) & 0xffff) | (vsid << 16);
}
static void kvmppc_mmu_book3s_32_reset_msr(struct kvm_vcpu *vcpu)
{
kvmppc_set_msr(vcpu, 0);
}
static hva_t kvmppc_mmu_book3s_32_get_pteg(struct kvm_vcpu *vcpu,
u32 sre, gva_t eaddr,
bool primary)
@@ -406,7 +401,6 @@ void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu)
mmu->mtsrin = kvmppc_mmu_book3s_32_mtsrin;
mmu->mfsrin = kvmppc_mmu_book3s_32_mfsrin;
mmu->xlate = kvmppc_mmu_book3s_32_xlate;
mmu->reset_msr = kvmppc_mmu_book3s_32_reset_msr;
mmu->tlbie = kvmppc_mmu_book3s_32_tlbie;
mmu->esid_to_vsid = kvmppc_mmu_book3s_32_esid_to_vsid;
mmu->ea_to_vp = kvmppc_mmu_book3s_32_ea_to_vp;
arch/powerpc/kvm/book3s_64_mmu.c
-15
View File
@@ -24,20 +24,6 @@
#define dprintk(X...) do { } while(0)
#endif
static void kvmppc_mmu_book3s_64_reset_msr(struct kvm_vcpu *vcpu)
{
unsigned long msr = vcpu->arch.intr_msr;
unsigned long cur_msr = kvmppc_get_msr(vcpu);
/* If transactional, change to suspend mode on IRQ delivery */
if (MSR_TM_TRANSACTIONAL(cur_msr))
msr |= MSR_TS_S;
else
msr |= cur_msr & MSR_TS_MASK;
kvmppc_set_msr(vcpu, msr);
}
static struct kvmppc_slb *kvmppc_mmu_book3s_64_find_slbe(
struct kvm_vcpu *vcpu,
gva_t eaddr)
@@ -676,7 +662,6 @@ void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu)
mmu->slbie = kvmppc_mmu_book3s_64_slbie;
mmu->slbia = kvmppc_mmu_book3s_64_slbia;
mmu->xlate = kvmppc_mmu_book3s_64_xlate;
mmu->reset_msr = kvmppc_mmu_book3s_64_reset_msr;
mmu->tlbie = kvmppc_mmu_book3s_64_tlbie;
mmu->esid_to_vsid = kvmppc_mmu_book3s_64_esid_to_vsid;
mmu->ea_to_vp = kvmppc_mmu_book3s_64_ea_to_vp;
arch/powerpc/kvm/book3s_64_mmu_hv.c
+7 -19
View File
@@ -275,18 +275,6 @@ int kvmppc_mmu_hv_init(void)
return 0;
}
static void kvmppc_mmu_book3s_64_hv_reset_msr(struct kvm_vcpu *vcpu)
{
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);
}
static long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags,
long pte_index, unsigned long pteh,
unsigned long ptel, unsigned long *pte_idx_ret)
@@ -508,6 +496,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
struct vm_area_struct *vma;
unsigned long rcbits;
long mmio_update;
struct mm_struct *mm;
if (kvm_is_radix(kvm))
return kvmppc_book3s_radix_page_fault(run, vcpu, ea, dsisr);
@@ -584,6 +573,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
is_ci = false;
pfn = 0;
page = NULL;
mm = current->mm;
pte_size = PAGE_SIZE;
writing = (dsisr & DSISR_ISSTORE) != 0;
/* If writing != 0, then the HPTE must allow writing, if we get here */
@@ -592,8 +582,8 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
npages = get_user_pages_fast(hva, 1, writing ? FOLL_WRITE : 0, pages);
if (npages < 1) {
/* Check if it's an I/O mapping */
down_read(&current->mm->mmap_sem);
vma = find_vma(current->mm, hva);
down_read(&mm->mmap_sem);
vma = find_vma(mm, hva);
if (vma && vma->vm_start <= hva && hva + psize <= vma->vm_end &&
(vma->vm_flags & VM_PFNMAP)) {
pfn = vma->vm_pgoff +
@@ -602,7 +592,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
is_ci = pte_ci(__pte((pgprot_val(vma->vm_page_prot))));
write_ok = vma->vm_flags & VM_WRITE;
}
up_read(&current->mm->mmap_sem);
up_read(&mm->mmap_sem);
if (!pfn)
goto out_put;
} else {
@@ -621,8 +611,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
* hugepage split and collapse.
*/
local_irq_save(flags);
ptep = find_current_mm_pte(current->mm->pgd,
hva, NULL, NULL);
ptep = find_current_mm_pte(mm->pgd, hva, NULL, NULL);
if (ptep) {
pte = kvmppc_read_update_linux_pte(ptep, 1);
if (__pte_write(pte))
@@ -2000,7 +1989,7 @@ int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *ghf)
ret = anon_inode_getfd("kvm-htab", &kvm_htab_fops, ctx, rwflag | O_CLOEXEC);
if (ret < 0) {
kfree(ctx);
kvm_put_kvm(kvm);
kvm_put_kvm_no_destroy(kvm);
return ret;
}
@@ -2161,7 +2150,6 @@ void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu)
vcpu->arch.slb_nr = 32; /* POWER7/POWER8 */
mmu->xlate = kvmppc_mmu_book3s_64_hv_xlate;
mmu->reset_msr = kvmppc_mmu_book3s_64_hv_reset_msr;
vcpu->arch.hflags |= BOOK3S_HFLAG_SLB;
}
arch/powerpc/kvm/book3s_64_mmu_radix.c
+25
View File
@@ -19,6 +19,8 @@
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/pte-walk.h>
#include <asm/ultravisor.h>
#include <asm/kvm_book3s_uvmem.h>
/*
* Supported radix tree geometry.
@@ -915,6 +917,9 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
if (!(dsisr & DSISR_PRTABLE_FAULT))
gpa |= ea & 0xfff;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE)
return kvmppc_send_page_to_uv(kvm, gfn);
/* Get the corresponding memslot */
memslot = gfn_to_memslot(kvm, gfn);
@@ -972,6 +977,11 @@ int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
unsigned long gpa = gfn << PAGE_SHIFT;
unsigned int shift;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE) {
uv_page_inval(kvm->arch.lpid, gpa, PAGE_SHIFT);
return 0;
}
ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep))
kvmppc_unmap_pte(kvm, ptep, gpa, shift, memslot,
@@ -989,6 +999,9 @@ int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
int ref = 0;
unsigned long old, *rmapp;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE)
return ref;
ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_young(*ptep)) {
old = kvmppc_radix_update_pte(kvm, ptep, _PAGE_ACCESSED, 0,
@@ -1013,6 +1026,9 @@ int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
unsigned int shift;
int ref = 0;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE)
return ref;
ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_young(*ptep))
ref = 1;
@@ -1030,6 +1046,9 @@ static int kvm_radix_test_clear_dirty(struct kvm *kvm,
int ret = 0;
unsigned long old, *rmapp;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE)
return ret;
ptep = __find_linux_pte(kvm->arch.pgtable, gpa, NULL, &shift);
if (ptep && pte_present(*ptep) && pte_dirty(*ptep)) {
ret = 1;
@@ -1082,6 +1101,12 @@ void kvmppc_radix_flush_memslot(struct kvm *kvm,
unsigned long gpa;
unsigned int shift;
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_START)
kvmppc_uvmem_drop_pages(memslot, kvm);
if (kvm->arch.secure_guest & KVMPPC_SECURE_INIT_DONE)
return;
gpa = memslot->base_gfn << PAGE_SHIFT;
spin_lock(&kvm->mmu_lock);
for (n = memslot->npages; n; --n) {
arch/powerpc/kvm/book3s_64_vio.c
+1 -1
View File
@@ -317,7 +317,7 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
if (ret >= 0)
list_add_rcu(&stt->list, &kvm->arch.spapr_tce_tables);
else
kvm_put_kvm(kvm);
kvm_put_kvm_no_destroy(kvm);
mutex_unlock(&kvm->lock);

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