The previous commit added support for callers of ____vm_create() to specify
what memslots to use for code, page-tables, and data allocations. Change
them accordingly:
- stacks, code, and exception tables use the code memslot
- page tables and the pgd use the pt memslot
- data (anything allocated with vm_vaddr_alloc()) uses the 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>
---
.../selftests/kvm/include/kvm_util_base.h | 3 +
.../selftests/kvm/lib/aarch64/processor.c | 11 ++--
tools/testing/selftests/kvm/lib/elf.c | 3 +-
tools/testing/selftests/kvm/lib/kvm_util.c | 57 ++++++++++++-------
.../selftests/kvm/lib/riscv/processor.c | 7 ++-
.../selftests/kvm/lib/s390x/processor.c | 7 ++-
.../selftests/kvm/lib/x86_64/processor.c | 13 +++--
7 files changed, 61 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 abe6c4e390ff..696719b227b9 100644
--- a/tools/testing/selftests/kvm/include/kvm_util_base.h
+++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
@@ -406,7 +406,10 @@ 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, uint32_t memslot);
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, uint32_t memslot);
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 5a31dc85d054..b6ebfdaf4957 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/processor.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c
@@ -79,7 +79,7 @@ void virt_arch_pgd_alloc(struct kvm_vm *vm)
if (!vm->pgd_created) {
vm_paddr_t paddr = vm_phy_pages_alloc(vm,
page_align(vm, ptrs_per_pgd(vm) * 8) / vm->page_size,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ KVM_GUEST_PAGE_TABLE_MIN_PADDR, vm->memslot.pt);
vm->pgd = paddr;
vm->pgd_created = true;
}
@@ -328,8 +328,9 @@ struct kvm_vcpu *aarch64_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
size_t stack_size = vm->page_size == 4096 ?
DEFAULT_STACK_PGS * vm->page_size :
vm->page_size;
- uint64_t stack_vaddr = vm_vaddr_alloc(vm, stack_size,
- DEFAULT_ARM64_GUEST_STACK_VADDR_MIN);
+ uint64_t stack_vaddr = __vm_vaddr_alloc(vm, stack_size,
+ DEFAULT_ARM64_GUEST_STACK_VADDR_MIN,
+ vm->memslot.code);
struct kvm_vcpu *vcpu = __vm_vcpu_add(vm, vcpu_id);
aarch64_vcpu_setup(vcpu, init);
@@ -435,8 +436,8 @@ 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, vm->memslot.code);
*(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..62cfbe3b6171 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,
+ vm->memslot.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 91b42d6b726b..44b4298d375e 100644
--- a/tools/testing/selftests/kvm/lib/kvm_util.c
+++ b/tools/testing/selftests/kvm/lib/kvm_util.c
@@ -1233,32 +1233,14 @@ 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, uint32_t memslot)
{
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, memslot);
/*
* Find an unused range of virtual page addresses of at least
@@ -1279,6 +1261,30 @@ 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 data memslot.
+ */
+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, vm->memslot.data);
+}
+
/*
* VM Virtual Address Allocate Pages
*
@@ -1298,6 +1304,12 @@ 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, uint32_t memslot)
+{
+ return __vm_vaddr_alloc(vm, getpagesize(), KVM_UTIL_MIN_VADDR,
+ memslot);
+}
+
/*
* VM Virtual Address Allocate Page
*
@@ -1863,7 +1875,8 @@ 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->memslot.pt);
}
/*
diff --git a/tools/testing/selftests/kvm/lib/riscv/processor.c b/tools/testing/selftests/kvm/lib/riscv/processor.c
index 604478151212..464d8db43dbc 100644
--- a/tools/testing/selftests/kvm/lib/riscv/processor.c
+++ b/tools/testing/selftests/kvm/lib/riscv/processor.c
@@ -58,7 +58,7 @@ void virt_arch_pgd_alloc(struct kvm_vm *vm)
if (!vm->pgd_created) {
vm_paddr_t paddr = vm_phy_pages_alloc(vm,
page_align(vm, ptrs_per_pte(vm) * 8) / vm->page_size,
- KVM_GUEST_PAGE_TABLE_MIN_PADDR, 0);
+ KVM_GUEST_PAGE_TABLE_MIN_PADDR, vm->memslot.pt);
vm->pgd = paddr;
vm->pgd_created = true;
}
@@ -282,8 +282,9 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id,
size_t stack_size = vm->page_size == 4096 ?
DEFAULT_STACK_PGS * vm->page_size :
vm->page_size;
- unsigned long stack_vaddr = vm_vaddr_alloc(vm, stack_size,
- DEFAULT_RISCV_GUEST_STACK_VADDR_MIN);
+ unsigned long stack_vaddr = __vm_vaddr_alloc(vm, stack_size,
+ DEFAULT_RISCV_GUEST_STACK_VADDR_MIN,
+ vm->memslot.code);
unsigned long current_gp = 0;
struct kvm_mp_state mps;
struct kvm_vcpu *vcpu;
diff --git a/tools/testing/selftests/kvm/lib/s390x/processor.c b/tools/testing/selftests/kvm/lib/s390x/processor.c
index 89d7340d9cbd..2d3ca4d4d004 100644
--- a/tools/testing/selftests/kvm/lib/s390x/processor.c
+++ b/tools/testing/selftests/kvm/lib/s390x/processor.c
@@ -21,7 +21,7 @@ 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->memslot.pt);
memset(addr_gpa2hva(vm, paddr), 0xff, PAGES_PER_REGION * vm->page_size);
vm->pgd = paddr;
@@ -167,8 +167,9 @@ 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,
+ vm->memslot.code);
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 2e6e61bbe81b..307e654513c6 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -525,7 +525,7 @@ 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, vm->memslot.code);
dt->base = vm->gdt;
dt->limit = getpagesize();
@@ -535,7 +535,7 @@ 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, vm->memslot.code);
memset(segp, 0, sizeof(*segp));
segp->base = vm->tss;
@@ -620,8 +620,9 @@ 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,
+ vm->memslot.code);
vcpu = __vm_vcpu_add(vm, vcpu_id);
vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid());
@@ -1118,8 +1119,8 @@ 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, vm->memslot.code);
+ vm->handlers = __vm_vaddr_alloc_page(vm, vm->memslot.code);
/* 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,
--
2.37.1.595.g718a3a8f04-goog
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