github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-03 20:59:53 +00:00
Code Issues Projects Releases Wiki Activity

hv: check eptp value before calling free_ept_mem()

Browse Source 
There is chance to destroy vm whose ept table was not created, for
example, dm fails to setup mem for vm. In this case, it's better
to check the value of eptp before calling free_ept_mem() rather than
relying on assertion in the function.

Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yan, Like 2018-07-17 22:59:33 +08:00 committed by lijinxia
parent 3571afc683
commit 3aa7d59497
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
hypervisor/arch/x86/ept.c
View File

@ -98,8 +98,10 @@ static void free_ept_mem(void *pml4_addr)
void destroy_ept(struct vm *vm)
{
free_ept_mem(HPA2HVA(vm->arch_vm.nworld_eptp));
free_ept_mem(HPA2HVA(vm->arch_vm.m2p));
if (vm->arch_vm.nworld_eptp != 0U)
free_ept_mem(HPA2HVA(vm->arch_vm.nworld_eptp));
if (vm->arch_vm.m2p != 0U)
free_ept_mem(HPA2HVA(vm->arch_vm.m2p));
/*
* If secure world is initialized, destroy Secure world ept.