Now that kvm_vm allows specifying different memslots for code, page tables,
and data, use the appropriate memslot when making allocations in
common/libraty code. Change them accordingly:
- code (allocated by lib/elf) use the CODE memslot
- stacks, exception tables, and other core data pages (like the TSS in x86)
use the DATA memslot
- page tables and the PGD use the PT memslot
- test data (anything allocated with vm_vaddr_alloc()) uses the TEST_DATA
memslot
No functional change intended. All allocators keep using memslot #0.
Cc: Sean Christopherson <seanjc@xxxxxxxxxx>
Cc: Andrew Jones <andrew.jones@xxxxxxxxx>
Signed-off-by: Ricardo Koller <ricarkol@xxxxxxxxxx>
Reviewed-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../selftests/kvm/include/kvm_util_base.h | 4 ++
.../selftests/kvm/lib/aarch64/processor.c | 12 ++--
tools/testing/selftests/kvm/lib/elf.c | 3 +-
tools/testing/selftests/kvm/lib/kvm_util.c | 57 ++++++++++++-------
.../selftests/kvm/lib/riscv/processor.c | 8 ++-
.../selftests/kvm/lib/s390x/processor.c | 8 ++-
.../selftests/kvm/lib/x86_64/processor.c | 13 +++--
7 files changed, 65 insertions(+), 40 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
index 6442aa9e9061..b0da75af1ff3 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -407,7 +407,11 @@ void vm_mem_region_move(struct kvm_vm *vm, uint32_t slot, uint64_t new_gpa);
void vm_mem_region_delete(struct kvm_vm *vm, uint32_t slot);
struct kvm_vcpu *__vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id);
vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min);
+vm_vaddr_t __vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min,
+ enum kvm_mem_region_type type);
vm_vaddr_t vm_vaddr_alloc_pages(struct kvm_vm *vm, int nr_pages);
+vm_vaddr_t __vm_vaddr_alloc_page(struct kvm_vm *vm,
+ enum kvm_mem_region_type type);
vm_vaddr_t vm_vaddr_alloc_page(struct kvm_vm *vm);
void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr,
diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c
index 6ff2b9d6cea6..2883dfd1ad49 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/processor.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c
@@ -82,7 +82,8 @@ void virt_arch_pgd_alloc(struct kvm_vm *vm)
return;
vm->pgd = vm_phy_pages_alloc(vm, nr_pages,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ KVM_GUEST_PAGE_TABLE_MIN_PADDR,
+ vm->memslots[MEM_REGION_PT]);
vm->pgd_created = true;
}
@@ -332,8 +333,9 @@ struct kvm_vcpu *aarch64_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
stack_size = vm->page_size == 4096 ? DEFAULT_STACK_PGS * vm->page_size :
vm->page_size;
- stack_vaddr = vm_vaddr_alloc(vm, stack_size,
- DEFAULT_ARM64_GUEST_STACK_VADDR_MIN);
+ stack_vaddr = __vm_vaddr_alloc(vm, stack_size,
+ DEFAULT_ARM64_GUEST_STACK_VADDR_MIN,
+ MEM_REGION_DATA);
aarch64_vcpu_setup(vcpu, init);
@@ -438,8 +440,8 @@ void route_exception(struct ex_regs *regs, int vector)
void vm_init_descriptor_tables(struct kvm_vm *vm)
{
- vm->handlers = vm_vaddr_alloc(vm, sizeof(struct handlers),
- vm->page_size);
+ vm->handlers = __vm_vaddr_alloc(vm, sizeof(struct handlers),
+ vm->page_size, MEM_REGION_DATA);
*(vm_vaddr_t *)addr_gva2hva(vm, (vm_vaddr_t)(&exception_handlers)) = vm->handlers;
}
diff --git a/tools/testing/selftests/kvm/lib/elf.c b/tools/testing/selftests/kvm/lib/elf.c
index 9f54c098d9d0..51f280c412ba 100644
--- a/tools/testing/selftests/kvm/lib/elf.c
+++ b/tools/testing/selftests/kvm/lib/elf.c
@@ -161,7 +161,8 @@ void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename)
seg_vend |= vm->page_size - 1;
size_t seg_size = seg_vend - seg_vstart + 1;
- vm_vaddr_t vaddr = vm_vaddr_alloc(vm, seg_size, seg_vstart);
+ vm_vaddr_t vaddr = __vm_vaddr_alloc(vm, seg_size, seg_vstart,
+ MEM_REGION_CODE);
TEST_ASSERT(vaddr == seg_vstart, "Unable to allocate "
"virtual memory for segment at requested min addr,\n"
" segment idx: %u\n"
diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
index f3dfa4e9ee0f..5ad4acaec8e0 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1226,32 +1226,15 @@ static vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz,
return pgidx_start * vm->page_size;
}
-/*
- * VM Virtual Address Allocate
- *
- * Input Args:
- * vm - Virtual Machine
- * sz - Size in bytes
- * vaddr_min - Minimum starting virtual address
- *
- * Output Args: None
- *
- * Return:
- * Starting guest virtual address
- *
- * Allocates at least sz bytes within the virtual address space of the vm
- * given by vm. The allocated bytes are mapped to a virtual address >=
- * the address given by vaddr_min. Note that each allocation uses a
- * a unique set of pages, with the minimum real allocation being at least
- * a page.
- */
-vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min)
+vm_vaddr_t __vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min,
+ enum kvm_mem_region_type type)
{
uint64_t pages = (sz >> vm->page_shift) + ((sz % vm->page_size) != 0);
virt_pgd_alloc(vm);
vm_paddr_t paddr = vm_phy_pages_alloc(vm, pages,
- KVM_UTIL_MIN_PFN * vm->page_size, 0);
+ KVM_UTIL_MIN_PFN * vm->page_size,
+ vm->memslots[type]);
/*
* Find an unused range of virtual page addresses of at least
@@ -1272,6 +1255,30 @@ vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min)
return vaddr_start;
}
+/*
+ * VM Virtual Address Allocate
+ *
+ * Input Args:
+ * vm - Virtual Machine
+ * sz - Size in bytes
+ * vaddr_min - Minimum starting virtual address
+ *
+ * Output Args: None
+ *
+ * Return:
+ * Starting guest virtual address
+ *
+ * Allocates at least sz bytes within the virtual address space of the vm
+ * given by vm. The allocated bytes are mapped to a virtual address >=
+ * the address given by vaddr_min. Note that each allocation uses a
+ * a unique set of pages, with the minimum real allocation being at least
+ * a page. The allocated physical space comes from the TEST_DATA memory region.
+ */
+vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min)
+{
+ return __vm_vaddr_alloc(vm, sz, vaddr_min, MEM_REGION_TEST_DATA);
+}
+
/*
* VM Virtual Address Allocate Pages
*
@@ -1291,6 +1298,11 @@ vm_vaddr_t vm_vaddr_alloc_pages(struct kvm_vm *vm, int nr_pages)
return vm_vaddr_alloc(vm, nr_pages * getpagesize(), KVM_UTIL_MIN_VADDR);
}
+vm_vaddr_t __vm_vaddr_alloc_page(struct kvm_vm *vm, enum kvm_mem_region_type type)
+{
+ return __vm_vaddr_alloc(vm, getpagesize(), KVM_UTIL_MIN_VADDR, type);
+}
+
/*
* VM Virtual Address Allocate Page
*
@@ -1856,7 +1868,8 @@ vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min,
vm_paddr_t vm_alloc_page_table(struct kvm_vm *vm)
{
- return vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ return vm_phy_page_alloc(vm, KVM_GUEST_PAGE_TABLE_MIN_PADDR,
+ vm->memslots[MEM_REGION_PT]);
}
/*
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
index ac7fc9d317db..d146ca71e0c0 100644
--- a/tools/testing/selftests/kvm/lib/riscv/processor.c
+++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
@@ -61,7 +61,8 @@ void virt_arch_pgd_alloc(struct kvm_vm *vm)
return;
vm->pgd = vm_phy_pages_alloc(vm, nr_pages,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ KVM_GUEST_PAGE_TABLE_MIN_PADDR,
+ vm->memslots[MEM_REGION_PT]);
vm->pgd_created = true;
}
@@ -288,8 +289,9 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
stack_size = vm->page_size == 4096 ? DEFAULT_STACK_PGS * vm->page_size :
vm->page_size;
- stack_vaddr = vm_vaddr_alloc(vm, stack_size,
- DEFAULT_RISCV_GUEST_STACK_VADDR_MIN);
+ stack_vaddr = __vm_vaddr_alloc(vm, stack_size,
+ DEFAULT_RISCV_GUEST_STACK_VADDR_MIN,
+ MEM_REGION_DATA);
vcpu = __vm_vcpu_add(vm, vcpu_id);
riscv_vcpu_mmu_setup(vcpu);
diff --git a/tools/testing/selftests/kvm/lib/s390x/processor.c b/tools/testing/selftests/kvm/lib/s390x/processor.c
index 89d7340d9cbd..15945121daf1 100644
--- a/tools/testing/selftests/kvm/lib/s390x/processor.c
+++ b/tools/testing/selftests/kvm/lib/s390x/processor.c
@@ -21,7 +21,8 @@ void virt_arch_pgd_alloc(struct kvm_vm *vm)
return;
paddr = vm_phy_pages_alloc(vm, PAGES_PER_REGION,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ KVM_GUEST_PAGE_TABLE_MIN_PADDR,
+ vm->memslots[MEM_REGION_PT]);
memset(addr_gpa2hva(vm, paddr), 0xff, PAGES_PER_REGION * vm->page_size);
vm->pgd = paddr;
@@ -167,8 +168,9 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
TEST_ASSERT(vm->page_size == 4096, "Unsupported page size: 0x%x",
vm->page_size);
- stack_vaddr = vm_vaddr_alloc(vm, stack_size,
- DEFAULT_GUEST_STACK_VADDR_MIN);
+ stack_vaddr = __vm_vaddr_alloc(vm, stack_size,
+ DEFAULT_GUEST_STACK_VADDR_MIN,
+ MEM_REGION_DATA);
vcpu = __vm_vcpu_add(vm, vcpu_id);
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index 39c4409ef56a..b199dde90e9f 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -552,7 +552,7 @@ vm_paddr_t addr_arch_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
static void kvm_setup_gdt(struct kvm_vm *vm, struct kvm_dtable *dt)
{
if (!vm->gdt)
- vm->gdt = vm_vaddr_alloc_page(vm);
+ vm->gdt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA);
dt->base = vm->gdt;
dt->limit = getpagesize();
@@ -562,7 +562,7 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp,
int selector)
{
if (!vm->tss)
- vm->tss = vm_vaddr_alloc_page(vm);
+ vm->tss = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA);
memset(segp, 0, sizeof(*segp));
segp->base = vm->tss;
@@ -647,8 +647,9 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
vm_vaddr_t stack_vaddr;
struct kvm_vcpu *vcpu;
- stack_vaddr = vm_vaddr_alloc(vm, DEFAULT_STACK_PGS * getpagesize(),
- DEFAULT_GUEST_STACK_VADDR_MIN);
+ stack_vaddr = __vm_vaddr_alloc(vm, DEFAULT_STACK_PGS * getpagesize(),
+ DEFAULT_GUEST_STACK_VADDR_MIN,
+ MEM_REGION_DATA);
vcpu = __vm_vcpu_add(vm, vcpu_id);
vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid());
@@ -1145,8 +1146,8 @@ void vm_init_descriptor_tables(struct kvm_vm *vm)
extern void *idt_handlers;
int i;
- vm->idt = vm_vaddr_alloc_page(vm);
- vm->handlers = vm_vaddr_alloc_page(vm);
+ vm->idt = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA);
+ vm->handlers = __vm_vaddr_alloc_page(vm, MEM_REGION_DATA);
/* Handlers have the same address in both address spaces.*/
for (i = 0; i < NUM_INTERRUPTS; i++)
set_idt_entry(vm, i, (unsigned long)(&idt_handlers)[i], 0,
--
2.38.0.rc1.362.ged0d419d3c-goog
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