Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"RISC-V:
- Fix compilation without RISCV_ISA_ZICBOM
- Fix kvm_riscv_vcpu_timer_pending() for Sstc
ARM:
- Fix a bug preventing restoring an ITS containing mappings for very
large and very sparse device topology
- Work around a relocation handling error when compiling the nVHE
object with profile optimisation
- Fix for stage-2 invalidation holding the VM MMU lock for too long
by limiting the walk to the largest block mapping size
- Enable stack protection and branch profiling for VHE
- Two selftest fixes
x86:
- add compat implementation for KVM_X86_SET_MSR_FILTER ioctl
selftests:
- synchronize includes between include/uapi and tools/include/uapi"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
tools: include: sync include/api/linux/kvm.h
KVM: x86: Add compat handler for KVM_X86_SET_MSR_FILTER
KVM: x86: Copy filter arg outside kvm_vm_ioctl_set_msr_filter()
kvm: Add support for arch compat vm ioctls
RISC-V: KVM: Fix kvm_riscv_vcpu_timer_pending() for Sstc
RISC-V: Fix compilation without RISCV_ISA_ZICBOM
KVM: arm64: vgic: Fix exit condition in scan_its_table()
KVM: arm64: nvhe: Fix build with profile optimization
KVM: selftests: Fix number of pages for memory slot in memslot_modification_stress_test
KVM: arm64: selftests: Fix multiple versions of GIC creation
KVM: arm64: Enable stack protection and branch profiling for VHE
KVM: arm64: Limit stage2_apply_range() batch size to largest block
KVM: arm64: Work out supported block level at compile time
diff --git a/arch/arm64/include/asm/kvm_pgtable.h b/arch/arm64/include/asm/kvm_pgtable.h
index 1b098bd..3252eb5 100644
--- a/arch/arm64/include/asm/kvm_pgtable.h
+++ b/arch/arm64/include/asm/kvm_pgtable.h
@@ -13,6 +13,18 @@
#define KVM_PGTABLE_MAX_LEVELS 4U
+/*
+ * The largest supported block sizes for KVM (no 52-bit PA support):
+ * - 4K (level 1): 1GB
+ * - 16K (level 2): 32MB
+ * - 64K (level 2): 512MB
+ */
+#ifdef CONFIG_ARM64_4K_PAGES
+#define KVM_PGTABLE_MIN_BLOCK_LEVEL 1U
+#else
+#define KVM_PGTABLE_MIN_BLOCK_LEVEL 2U
+#endif
+
static inline u64 kvm_get_parange(u64 mmfr0)
{
u64 parange = cpuid_feature_extract_unsigned_field(mmfr0,
@@ -58,11 +70,7 @@
static inline bool kvm_level_supports_block_mapping(u32 level)
{
- /*
- * Reject invalid block mappings and don't bother with 4TB mappings for
- * 52-bit PAs.
- */
- return !(level == 0 || (PAGE_SIZE != SZ_4K && level == 1));
+ return level >= KVM_PGTABLE_MIN_BLOCK_LEVEL;
}
/**
diff --git a/arch/arm64/include/asm/stage2_pgtable.h b/arch/arm64/include/asm/stage2_pgtable.h
index fe341a6..c8dca8a 100644
--- a/arch/arm64/include/asm/stage2_pgtable.h
+++ b/arch/arm64/include/asm/stage2_pgtable.h
@@ -11,13 +11,6 @@
#include <linux/pgtable.h>
/*
- * PGDIR_SHIFT determines the size a top-level page table entry can map
- * and depends on the number of levels in the page table. Compute the
- * PGDIR_SHIFT for a given number of levels.
- */
-#define pt_levels_pgdir_shift(lvls) ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - (lvls))
-
-/*
* The hardware supports concatenation of up to 16 tables at stage2 entry
* level and we use the feature whenever possible, which means we resolve 4
* additional bits of address at the entry level.
@@ -30,11 +23,6 @@
#define stage2_pgtable_levels(ipa) ARM64_HW_PGTABLE_LEVELS((ipa) - 4)
#define kvm_stage2_levels(kvm) VTCR_EL2_LVLS(kvm->arch.vtcr)
-/* stage2_pgdir_shift() is the size mapped by top-level stage2 entry for the VM */
-#define stage2_pgdir_shift(kvm) pt_levels_pgdir_shift(kvm_stage2_levels(kvm))
-#define stage2_pgdir_size(kvm) (1ULL << stage2_pgdir_shift(kvm))
-#define stage2_pgdir_mask(kvm) ~(stage2_pgdir_size(kvm) - 1)
-
/*
* kvm_mmmu_cache_min_pages() is the number of pages required to install
* a stage-2 translation. We pre-allocate the entry level page table at
@@ -42,12 +30,4 @@
*/
#define kvm_mmu_cache_min_pages(kvm) (kvm_stage2_levels(kvm) - 1)
-static inline phys_addr_t
-stage2_pgd_addr_end(struct kvm *kvm, phys_addr_t addr, phys_addr_t end)
-{
- phys_addr_t boundary = (addr + stage2_pgdir_size(kvm)) & stage2_pgdir_mask(kvm);
-
- return (boundary - 1 < end - 1) ? boundary : end;
-}
-
#endif /* __ARM64_S2_PGTABLE_H_ */
diff --git a/arch/arm64/kvm/hyp/Makefile b/arch/arm64/kvm/hyp/Makefile
index 687598e..a38dea6 100644
--- a/arch/arm64/kvm/hyp/Makefile
+++ b/arch/arm64/kvm/hyp/Makefile
@@ -5,9 +5,6 @@
incdir := $(srctree)/$(src)/include
subdir-asflags-y := -I$(incdir)
-subdir-ccflags-y := -I$(incdir) \
- -fno-stack-protector \
- -DDISABLE_BRANCH_PROFILING \
- $(DISABLE_STACKLEAK_PLUGIN)
+subdir-ccflags-y := -I$(incdir)
obj-$(CONFIG_KVM) += vhe/ nvhe/ pgtable.o
diff --git a/arch/arm64/kvm/hyp/nvhe/Makefile b/arch/arm64/kvm/hyp/nvhe/Makefile
index b5c5119..be0a2bc 100644
--- a/arch/arm64/kvm/hyp/nvhe/Makefile
+++ b/arch/arm64/kvm/hyp/nvhe/Makefile
@@ -10,6 +10,9 @@
# will explode instantly (Words of Marc Zyngier). So introduce a generic flag
# __DISABLE_TRACE_MMIO__ to disable MMIO tracing for nVHE KVM.
ccflags-y := -D__KVM_NVHE_HYPERVISOR__ -D__DISABLE_EXPORTS -D__DISABLE_TRACE_MMIO__
+ccflags-y += -fno-stack-protector \
+ -DDISABLE_BRANCH_PROFILING \
+ $(DISABLE_STACKLEAK_PLUGIN)
hostprogs := gen-hyprel
HOST_EXTRACFLAGS += -I$(objtree)/include
@@ -89,6 +92,10 @@
# Remove ftrace, Shadow Call Stack, and CFI CFLAGS.
# This is equivalent to the 'notrace', '__noscs', and '__nocfi' annotations.
KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_FTRACE) $(CC_FLAGS_SCS) $(CC_FLAGS_CFI), $(KBUILD_CFLAGS))
+# Starting from 13.0.0 llvm emits SHT_REL section '.llvm.call-graph-profile'
+# when profile optimization is applied. gen-hyprel does not support SHT_REL and
+# causes a build failure. Remove profile optimization flags.
+KBUILD_CFLAGS := $(filter-out -fprofile-sample-use=% -fprofile-use=%, $(KBUILD_CFLAGS))
# KVM nVHE code is run at a different exception code with a different map, so
# compiler instrumentation that inserts callbacks or checks into the code may
diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 34c5fee..60ee3d9 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -31,6 +31,13 @@
static unsigned long io_map_base;
+static phys_addr_t stage2_range_addr_end(phys_addr_t addr, phys_addr_t end)
+{
+ phys_addr_t size = kvm_granule_size(KVM_PGTABLE_MIN_BLOCK_LEVEL);
+ phys_addr_t boundary = ALIGN_DOWN(addr + size, size);
+
+ return (boundary - 1 < end - 1) ? boundary : end;
+}
/*
* Release kvm_mmu_lock periodically if the memory region is large. Otherwise,
@@ -52,7 +59,7 @@
if (!pgt)
return -EINVAL;
- next = stage2_pgd_addr_end(kvm, addr, end);
+ next = stage2_range_addr_end(addr, end);
ret = fn(pgt, addr, next - addr);
if (ret)
break;
diff --git a/arch/arm64/kvm/vgic/vgic-its.c b/arch/arm64/kvm/vgic/vgic-its.c
index 24d7778..733b530 100644
--- a/arch/arm64/kvm/vgic/vgic-its.c
+++ b/arch/arm64/kvm/vgic/vgic-its.c
@@ -2149,7 +2149,7 @@
memset(entry, 0, esz);
- while (len > 0) {
+ while (true) {
int next_offset;
size_t byte_offset;
@@ -2162,6 +2162,9 @@
return next_offset;
byte_offset = next_offset * esz;
+ if (byte_offset >= len)
+ break;
+
id += next_offset;
gpa += byte_offset;
len -= byte_offset;
diff --git a/arch/riscv/include/asm/cacheflush.h b/arch/riscv/include/asm/cacheflush.h
index 8a5c246..f6fbe70 100644
--- a/arch/riscv/include/asm/cacheflush.h
+++ b/arch/riscv/include/asm/cacheflush.h
@@ -42,16 +42,8 @@
#endif /* CONFIG_SMP */
-/*
- * The T-Head CMO errata internally probe the CBOM block size, but otherwise
- * don't depend on Zicbom.
- */
extern unsigned int riscv_cbom_block_size;
-#ifdef CONFIG_RISCV_ISA_ZICBOM
void riscv_init_cbom_blocksize(void);
-#else
-static inline void riscv_init_cbom_blocksize(void) { }
-#endif
#ifdef CONFIG_RISCV_DMA_NONCOHERENT
void riscv_noncoherent_supported(void);
diff --git a/arch/riscv/include/asm/kvm_vcpu_timer.h b/arch/riscv/include/asm/kvm_vcpu_timer.h
index 0d8fdb8..82f7260 100644
--- a/arch/riscv/include/asm/kvm_vcpu_timer.h
+++ b/arch/riscv/include/asm/kvm_vcpu_timer.h
@@ -45,6 +45,7 @@
int kvm_riscv_vcpu_timer_reset(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_timer_restore(struct kvm_vcpu *vcpu);
void kvm_riscv_guest_timer_init(struct kvm *kvm);
+void kvm_riscv_vcpu_timer_sync(struct kvm_vcpu *vcpu);
void kvm_riscv_vcpu_timer_save(struct kvm_vcpu *vcpu);
bool kvm_riscv_vcpu_timer_pending(struct kvm_vcpu *vcpu);
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
index a032c4f..71ebbc4 100644
--- a/arch/riscv/kvm/vcpu.c
+++ b/arch/riscv/kvm/vcpu.c
@@ -708,6 +708,9 @@
clear_bit(IRQ_VS_SOFT, &v->irqs_pending);
}
}
+
+ /* Sync-up timer CSRs */
+ kvm_riscv_vcpu_timer_sync(vcpu);
}
int kvm_riscv_vcpu_set_interrupt(struct kvm_vcpu *vcpu, unsigned int irq)
diff --git a/arch/riscv/kvm/vcpu_timer.c b/arch/riscv/kvm/vcpu_timer.c
index 185f238..ad34519 100644
--- a/arch/riscv/kvm/vcpu_timer.c
+++ b/arch/riscv/kvm/vcpu_timer.c
@@ -320,6 +320,21 @@
kvm_riscv_vcpu_timer_unblocking(vcpu);
}
+void kvm_riscv_vcpu_timer_sync(struct kvm_vcpu *vcpu)
+{
+ struct kvm_vcpu_timer *t = &vcpu->arch.timer;
+
+ if (!t->sstc_enabled)
+ return;
+
+#if defined(CONFIG_32BIT)
+ t->next_cycles = csr_read(CSR_VSTIMECMP);
+ t->next_cycles |= (u64)csr_read(CSR_VSTIMECMPH) << 32;
+#else
+ t->next_cycles = csr_read(CSR_VSTIMECMP);
+#endif
+}
+
void kvm_riscv_vcpu_timer_save(struct kvm_vcpu *vcpu)
{
struct kvm_vcpu_timer *t = &vcpu->arch.timer;
@@ -327,13 +342,11 @@
if (!t->sstc_enabled)
return;
- t = &vcpu->arch.timer;
-#if defined(CONFIG_32BIT)
- t->next_cycles = csr_read(CSR_VSTIMECMP);
- t->next_cycles |= (u64)csr_read(CSR_VSTIMECMPH) << 32;
-#else
- t->next_cycles = csr_read(CSR_VSTIMECMP);
-#endif
+ /*
+ * The vstimecmp CSRs are saved by kvm_riscv_vcpu_timer_sync()
+ * upon every VM exit so no need to save here.
+ */
+
/* timer should be enabled for the remaining operations */
if (unlikely(!t->init_done))
return;
diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c
index 6cb7d96..57b40a3 100644
--- a/arch/riscv/mm/cacheflush.c
+++ b/arch/riscv/mm/cacheflush.c
@@ -3,6 +3,7 @@
* Copyright (C) 2017 SiFive
*/
+#include <linux/of.h>
#include <asm/cacheflush.h>
#ifdef CONFIG_SMP
@@ -86,3 +87,40 @@
flush_icache_all();
}
#endif /* CONFIG_MMU */
+
+unsigned int riscv_cbom_block_size;
+EXPORT_SYMBOL_GPL(riscv_cbom_block_size);
+
+void riscv_init_cbom_blocksize(void)
+{
+ struct device_node *node;
+ unsigned long cbom_hartid;
+ u32 val, probed_block_size;
+ int ret;
+
+ probed_block_size = 0;
+ for_each_of_cpu_node(node) {
+ unsigned long hartid;
+
+ ret = riscv_of_processor_hartid(node, &hartid);
+ if (ret)
+ continue;
+
+ /* set block-size for cbom extension if available */
+ ret = of_property_read_u32(node, "riscv,cbom-block-size", &val);
+ if (ret)
+ continue;
+
+ if (!probed_block_size) {
+ probed_block_size = val;
+ cbom_hartid = hartid;
+ } else {
+ if (probed_block_size != val)
+ pr_warn("cbom-block-size mismatched between harts %lu and %lu\n",
+ cbom_hartid, hartid);
+ }
+ }
+
+ if (probed_block_size)
+ riscv_cbom_block_size = probed_block_size;
+}
diff --git a/arch/riscv/mm/dma-noncoherent.c b/arch/riscv/mm/dma-noncoherent.c
index b0add98..d919efa 100644
--- a/arch/riscv/mm/dma-noncoherent.c
+++ b/arch/riscv/mm/dma-noncoherent.c
@@ -8,13 +8,8 @@
#include <linux/dma-direct.h>
#include <linux/dma-map-ops.h>
#include <linux/mm.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
#include <asm/cacheflush.h>
-unsigned int riscv_cbom_block_size;
-EXPORT_SYMBOL_GPL(riscv_cbom_block_size);
-
static bool noncoherent_supported;
void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
@@ -77,42 +72,6 @@
dev->dma_coherent = coherent;
}
-#ifdef CONFIG_RISCV_ISA_ZICBOM
-void riscv_init_cbom_blocksize(void)
-{
- struct device_node *node;
- unsigned long cbom_hartid;
- u32 val, probed_block_size;
- int ret;
-
- probed_block_size = 0;
- for_each_of_cpu_node(node) {
- unsigned long hartid;
-
- ret = riscv_of_processor_hartid(node, &hartid);
- if (ret)
- continue;
-
- /* set block-size for cbom extension if available */
- ret = of_property_read_u32(node, "riscv,cbom-block-size", &val);
- if (ret)
- continue;
-
- if (!probed_block_size) {
- probed_block_size = val;
- cbom_hartid = hartid;
- } else {
- if (probed_block_size != val)
- pr_warn("cbom-block-size mismatched between harts %lu and %lu\n",
- cbom_hartid, hartid);
- }
- }
-
- if (probed_block_size)
- riscv_cbom_block_size = probed_block_size;
-}
-#endif
-
void riscv_noncoherent_supported(void)
{
WARN(!riscv_cbom_block_size,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4bd5f8a..9cf1ba8 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6442,26 +6442,22 @@
return 0;
}
-static int kvm_vm_ioctl_set_msr_filter(struct kvm *kvm, void __user *argp)
+static int kvm_vm_ioctl_set_msr_filter(struct kvm *kvm,
+ struct kvm_msr_filter *filter)
{
- struct kvm_msr_filter __user *user_msr_filter = argp;
struct kvm_x86_msr_filter *new_filter, *old_filter;
- struct kvm_msr_filter filter;
bool default_allow;
bool empty = true;
int r = 0;
u32 i;
- if (copy_from_user(&filter, user_msr_filter, sizeof(filter)))
- return -EFAULT;
-
- if (filter.flags & ~KVM_MSR_FILTER_DEFAULT_DENY)
+ if (filter->flags & ~KVM_MSR_FILTER_DEFAULT_DENY)
return -EINVAL;
- for (i = 0; i < ARRAY_SIZE(filter.ranges); i++)
- empty &= !filter.ranges[i].nmsrs;
+ for (i = 0; i < ARRAY_SIZE(filter->ranges); i++)
+ empty &= !filter->ranges[i].nmsrs;
- default_allow = !(filter.flags & KVM_MSR_FILTER_DEFAULT_DENY);
+ default_allow = !(filter->flags & KVM_MSR_FILTER_DEFAULT_DENY);
if (empty && !default_allow)
return -EINVAL;
@@ -6469,8 +6465,8 @@
if (!new_filter)
return -ENOMEM;
- for (i = 0; i < ARRAY_SIZE(filter.ranges); i++) {
- r = kvm_add_msr_filter(new_filter, &filter.ranges[i]);
+ for (i = 0; i < ARRAY_SIZE(filter->ranges); i++) {
+ r = kvm_add_msr_filter(new_filter, &filter->ranges[i]);
if (r) {
kvm_free_msr_filter(new_filter);
return r;
@@ -6493,6 +6489,62 @@
return 0;
}
+#ifdef CONFIG_KVM_COMPAT
+/* for KVM_X86_SET_MSR_FILTER */
+struct kvm_msr_filter_range_compat {
+ __u32 flags;
+ __u32 nmsrs;
+ __u32 base;
+ __u32 bitmap;
+};
+
+struct kvm_msr_filter_compat {
+ __u32 flags;
+ struct kvm_msr_filter_range_compat ranges[KVM_MSR_FILTER_MAX_RANGES];
+};
+
+#define KVM_X86_SET_MSR_FILTER_COMPAT _IOW(KVMIO, 0xc6, struct kvm_msr_filter_compat)
+
+long kvm_arch_vm_compat_ioctl(struct file *filp, unsigned int ioctl,
+ unsigned long arg)
+{
+ void __user *argp = (void __user *)arg;
+ struct kvm *kvm = filp->private_data;
+ long r = -ENOTTY;
+
+ switch (ioctl) {
+ case KVM_X86_SET_MSR_FILTER_COMPAT: {
+ struct kvm_msr_filter __user *user_msr_filter = argp;
+ struct kvm_msr_filter_compat filter_compat;
+ struct kvm_msr_filter filter;
+ int i;
+
+ if (copy_from_user(&filter_compat, user_msr_filter,
+ sizeof(filter_compat)))
+ return -EFAULT;
+
+ filter.flags = filter_compat.flags;
+ for (i = 0; i < ARRAY_SIZE(filter.ranges); i++) {
+ struct kvm_msr_filter_range_compat *cr;
+
+ cr = &filter_compat.ranges[i];
+ filter.ranges[i] = (struct kvm_msr_filter_range) {
+ .flags = cr->flags,
+ .nmsrs = cr->nmsrs,
+ .base = cr->base,
+ .bitmap = (__u8 *)(ulong)cr->bitmap,
+ };
+ }
+
+ r = kvm_vm_ioctl_set_msr_filter(kvm, &filter);
+ break;
+ }
+ }
+
+ return r;
+}
+#endif
+
#ifdef CONFIG_HAVE_KVM_PM_NOTIFIER
static int kvm_arch_suspend_notifier(struct kvm *kvm)
{
@@ -6915,9 +6967,16 @@
case KVM_SET_PMU_EVENT_FILTER:
r = kvm_vm_ioctl_set_pmu_event_filter(kvm, argp);
break;
- case KVM_X86_SET_MSR_FILTER:
- r = kvm_vm_ioctl_set_msr_filter(kvm, argp);
+ case KVM_X86_SET_MSR_FILTER: {
+ struct kvm_msr_filter __user *user_msr_filter = argp;
+ struct kvm_msr_filter filter;
+
+ if (copy_from_user(&filter, user_msr_filter, sizeof(filter)))
+ return -EFAULT;
+
+ r = kvm_vm_ioctl_set_msr_filter(kvm, &filter);
break;
+ }
default:
r = -ENOTTY;
}
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 32f259f..00c3448 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1390,6 +1390,8 @@
struct kvm_enable_cap *cap);
long kvm_arch_vm_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg);
+long kvm_arch_vm_compat_ioctl(struct file *filp, unsigned int ioctl,
+ unsigned long arg);
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
diff --git a/tools/include/uapi/linux/kvm.h b/tools/include/uapi/linux/kvm.h
index eed0315..0d5d441 100644
--- a/tools/include/uapi/linux/kvm.h
+++ b/tools/include/uapi/linux/kvm.h
@@ -1177,6 +1177,7 @@
#define KVM_CAP_VM_DISABLE_NX_HUGE_PAGES 220
#define KVM_CAP_S390_ZPCI_OP 221
#define KVM_CAP_S390_CPU_TOPOLOGY 222
+#define KVM_CAP_DIRTY_LOG_RING_ACQ_REL 223
#ifdef KVM_CAP_IRQ_ROUTING
diff --git a/tools/testing/selftests/kvm/aarch64/vgic_init.c b/tools/testing/selftests/kvm/aarch64/vgic_init.c
index e05ecb3..9c131d9 100644
--- a/tools/testing/selftests/kvm/aarch64/vgic_init.c
+++ b/tools/testing/selftests/kvm/aarch64/vgic_init.c
@@ -662,8 +662,8 @@
: KVM_DEV_TYPE_ARM_VGIC_V2;
if (!__kvm_test_create_device(v.vm, other)) {
- ret = __kvm_test_create_device(v.vm, other);
- TEST_ASSERT(ret && (errno == EINVAL || errno == EEXIST),
+ ret = __kvm_create_device(v.vm, other);
+ TEST_ASSERT(ret < 0 && (errno == EINVAL || errno == EEXIST),
"create GIC device while other version exists");
}
diff --git a/tools/testing/selftests/kvm/memslot_modification_stress_test.c b/tools/testing/selftests/kvm/memslot_modification_stress_test.c
index 6ee7e1d..bb1d17a 100644
--- a/tools/testing/selftests/kvm/memslot_modification_stress_test.c
+++ b/tools/testing/selftests/kvm/memslot_modification_stress_test.c
@@ -67,7 +67,7 @@
static void add_remove_memslot(struct kvm_vm *vm, useconds_t delay,
uint64_t nr_modifications)
{
- const uint64_t pages = 1;
+ uint64_t pages = max_t(int, vm->page_size, getpagesize()) / vm->page_size;
uint64_t gpa;
int i;
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index e30f1b4..1376a47 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -4839,6 +4839,12 @@
};
};
+long __weak kvm_arch_vm_compat_ioctl(struct file *filp, unsigned int ioctl,
+ unsigned long arg)
+{
+ return -ENOTTY;
+}
+
static long kvm_vm_compat_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@@ -4847,6 +4853,11 @@
if (kvm->mm != current->mm || kvm->vm_dead)
return -EIO;
+
+ r = kvm_arch_vm_compat_ioctl(filp, ioctl, arg);
+ if (r != -ENOTTY)
+ return r;
+
switch (ioctl) {
#ifdef CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT
case KVM_CLEAR_DIRTY_LOG: {
