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hv: Replace dynamic memory allocation for MSR bitmap

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Replace pointer with static memory for msr_bitmap
inside structure vm_arch.

Tracked-On: #861
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Mingqiang Chi 2018-09-07 14:18:25 +08:00 committed by lijinxia
parent 02e7edc063
commit 887ebf0b08
3 changed files with 3 additions and 11 deletions
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3
hypervisor/arch/x86/guest/vm.c
View File

@ -292,9 +292,6 @@ int shutdown_vm(struct vm *vm)
/* Free EPT allocated resources assigned to VM */
destroy_ept(vm);
/* Free MSR bitmap */
free(vm->arch_vm.msr_bitmap);
/* TODO: De-initialize I/O Emulation */
free_io_emulation_resource(vm);

8
hypervisor/arch/x86/guest/vmsr.c
View File

@ -55,7 +55,7 @@ void init_msr_emulation(struct vcpu *vcpu)
{
uint32_t i;
uint32_t msrs_count = ARRAY_SIZE(emulated_msrs);
void *msr_bitmap;
uint8_t *msr_bitmap;
uint64_t value64;
ASSERT(msrs_count == IDX_MAX_MSR,
@ -63,12 +63,6 @@ void init_msr_emulation(struct vcpu *vcpu)
/*msr bitmap, just allocated/init once, and used for all vm's vcpu*/
if (is_vcpu_bsp(vcpu)) {
/* Allocate and initialize memory for MSR bitmap region*/
vcpu->vm->arch_vm.msr_bitmap = alloc_page();
ASSERT(vcpu->vm->arch_vm.msr_bitmap != NULL, "");
(void)memset(vcpu->vm->arch_vm.msr_bitmap, 0x0U, CPU_PAGE_SIZE);
msr_bitmap = vcpu->vm->arch_vm.msr_bitmap;
for (i = 0U; i < msrs_count; i++) {

3
hypervisor/include/arch/x86/guest/vm.h
View File

@ -88,6 +88,8 @@ enum vm_state {
struct vm_arch {
/* I/O bitmaps A and B for this VM, MUST be 4-Kbyte aligned */
uint8_t io_bitmap[CPU_PAGE_SIZE*2];
/* MSR bitmap region for this VM, MUST be 4-Kbyte aligned */
uint8_t msr_bitmap[CPU_PAGE_SIZE];
uint64_t guest_init_pml4;/* Guest init pml4 */
/* EPT hierarchy for Normal World */
@ -99,7 +101,6 @@ struct vm_arch {
void *sworld_eptp;
void *m2p; /* machine address to guest physical address */
void *tmp_pg_array; /* Page array for tmp guest paging struct */
void *msr_bitmap; /* MSR bitmap page base address for this VM */
struct acrn_vioapic vioapic; /* Virtual IOAPIC base address */
struct acrn_vpic vpic; /* Virtual PIC */
/**