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hv: mmu: replace dynamic memory allocation in memory

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Replace dynamic memory allocation in memory management with static memory allocation.
Since the static memory allocation can guarantee the allocation never failed, so
split_large_page and construct_pgentry don't need to return a errno any more.
Besides, the destroy_ept don't need to free page any more. Instead, it would memset
the eptp to 0 to make sure we can't walk this paging table again.

Tracked-On: #861
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2018-10-30 05:55:57 +08:00
committed by lijinxia
parent 9c7c0de08f
commit 0391f84c83
13 changed files with 147 additions and 236 deletions
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10
hypervisor/common/hypercall.c
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@@ -356,7 +356,7 @@ int32_t hcall_notify_ioreq_finish(uint16_t vmid, uint16_t vcpu_id)
static int32_t local_set_vm_memory_region(struct vm *vm,
struct vm *target_vm, const struct vm_memory_region *region)
{
uint64_t hpa, base_paddr;
uint64_t hpa, base_paddr, gpa_end;
uint64_t prot;
uint64_t *pml4_page;
@@ -366,6 +366,14 @@ static int32_t local_set_vm_memory_region(struct vm *vm,
return -EINVAL;
}
gpa_end = region->gpa + region->size;
if ((gpa_end > vm->arch_vm.ept_mem_ops.info->ept.top_address_space) &&
(region->gpa < TRUSTY_EPT_REBASE_GPA)) {
pr_err("%s, invalid gpa: 0x%llx, size: 0x%llx, top_address_space: 0x%llx", __func__,
region->gpa, region->size, vm->arch_vm.ept_mem_ops.info->ept.top_address_space);
return -EINVAL;
}
dev_dbg(ACRN_DBG_HYCALL,
"[vm%d] type=%d gpa=0x%x vm0_gpa=0x%x size=0x%x",
target_vm->vm_id, region->type, region->gpa,