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hv: add hardware_detect_support to detect which hardware we support

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Now just add some basic feature/capability detect (not all). Vapic
didn't add here for if we must support vapic then the code which
for vapic not supported must remove, like mmio apic r/w.

Signed-off-by: Li, Fei1 <fei1.li@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Li, Fei1
2018-04-17 11:40:01 +08:00
committed by Jack Ren
parent 10c3a98577
commit 1b1f723c7b
6 changed files with 114 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

105
hypervisor/arch/x86/cpu.c
View File

@@ -126,7 +126,6 @@ static uint64_t get_address_mask(uint8_t limit)
static void get_cpu_capabilities(void)
{
uint32_t eax, unused;
uint32_t max_extended_function_idx;
uint32_t family, model;
cpuid(CPUID_FEATURES, &eax, &unused,
@@ -149,28 +148,28 @@ static void get_cpu_capabilities(void)
&boot_cpu_data.cpuid_leaves[FEAT_7_0_EDX]);
cpuid(CPUID_MAX_EXTENDED_FUNCTION,
&max_extended_function_idx,
&boot_cpu_data.extended_cpuid_level,
&unused, &unused, &unused);
boot_cpu_data.cpuid_leaves[FEAT_8000_0000_EAX] =
max_extended_function_idx;
if (max_extended_function_idx < CPUID_EXTEND_ADDRESS_SIZE) {
panic("CPU w/o CPUID.80000008H is not supported");
if (boot_cpu_data.extended_cpuid_level >= CPUID_EXTEND_FUNCTION_1)
cpuid(CPUID_EXTEND_FUNCTION_1, &unused, &unused,
&boot_cpu_data.cpuid_leaves[FEAT_8000_0001_ECX],
&boot_cpu_data.cpuid_leaves[FEAT_8000_0001_EDX]);
if (boot_cpu_data.extended_cpuid_level >= CPUID_EXTEND_ADDRESS_SIZE) {
cpuid(CPUID_EXTEND_ADDRESS_SIZE, &eax,
&boot_cpu_data.cpuid_leaves[FEAT_8000_0008_EBX],
&unused, &unused);
/* EAX bits 07-00: #Physical Address Bits
* bits 15-08: #Linear Address Bits
*/
boot_cpu_data.x86_virt_bits = (eax >> 8) & 0xff;
boot_cpu_data.x86_phys_bits = eax & 0xff;
boot_cpu_data.physical_address_mask =
get_address_mask(boot_cpu_data.x86_phys_bits);
}
cpuid(CPUID_EXTEND_FUNCTION_1, &unused, &unused,
&boot_cpu_data.cpuid_leaves[FEAT_8000_0001_ECX],
&boot_cpu_data.cpuid_leaves[FEAT_8000_0001_EDX]);
cpuid(CPUID_EXTEND_ADDRESS_SIZE,
&eax, &unused, &unused, &unused);
boot_cpu_data.cpuid_leaves[FEAT_8000_0008_EAX] = eax;
/* EAX bits 07-00: #Physical Address Bits
* bits 15-08: #Linear Address Bits
*/
boot_cpu_data.physical_address_mask =
get_address_mask(eax & 0xff);
/* For speculation defence.
* The default way is to set IBRS at vmexit and then do IBPB at vcpu
* context switch(ibrs_type == IBRS_RAW).
@@ -195,6 +194,64 @@ static void get_cpu_capabilities(void)
#endif
}
/*
* basic hardware capability check
* we should supplement which feature/capability we must support
* here later.
*/
static int hardware_detect_support(void)
{
int ret;
/* Long Mode (x86-64, 64-bit support) */
if (!cpu_has_cap(X86_FEATURE_LM)) {
pr_fatal("%s, LM not supported\n", __func__);
return -ENODEV;
}
if ((boot_cpu_data.x86_phys_bits == 0) ||
(boot_cpu_data.x86_virt_bits == 0)) {
pr_fatal("%s, can't detect Linear/Physical Address size\n",
__func__);
return -ENODEV;
}
/* lapic TSC deadline timer */
if (!cpu_has_cap(X86_FEATURE_TSC_DEADLINE)) {
pr_fatal("%s, TSC deadline not supported\n", __func__);
return -ENODEV;
}
/* Execute Disable */
if (!cpu_has_cap(X86_FEATURE_NX)) {
pr_fatal("%s, NX not supported\n", __func__);
return -ENODEV;
}
/* Supervisor-Mode Execution Prevention */
if (!cpu_has_cap(X86_FEATURE_SMEP)) {
pr_fatal("%s, SMEP not supported\n", __func__);
return -ENODEV;
}
/* Supervisor-Mode Access Prevention */
if (!cpu_has_cap(X86_FEATURE_SMAP)) {
pr_fatal("%s, SMAP not supported\n", __func__);
return -ENODEV;
}
if (!cpu_has_cap(X86_FEATURE_VMX)) {
pr_fatal("%s, vmx not supported\n", __func__);
return -ENODEV;
}
ret = check_vmx_mmu_cap();
if (ret)
return ret;
printf("hardware support HV\n");
return 0;
}
static void alloc_phy_cpu_data(int pcpu_num)
{
phy_cpu_num = pcpu_num;
@@ -458,6 +515,11 @@ void bsp_boot_init(void)
pr_dbg("Core %d is up", CPU_BOOT_ID);
if (hardware_detect_support() != 0) {
pr_fatal("hardware not support!\n");
return;
}
/* Warn for security feature not ready */
if (!cpu_has_cap(X86_FEATURE_IBRS_IBPB) &&
!cpu_has_cap(X86_FEATURE_STIBP)) {
@@ -492,7 +554,10 @@ void bsp_boot_init(void)
ASSERT(get_cpu_id() == CPU_BOOT_ID, "");
init_iommu();
if (init_iommu() != 0) {
pr_fatal("%s, init iommu failed\n", __func__);
return;
}
console_setup_timer();

17
hypervisor/arch/x86/mmu.c
View File

@@ -94,7 +94,7 @@ static inline bool cpu_has_vmx_vpid_cap(uint32_t bit_mask)
return !!(vmx_caps.vpid & bit_mask);
}
static void check_mmu_capability(void)
int check_vmx_mmu_cap(void)
{
uint64_t val;
@@ -103,8 +103,17 @@ static void check_mmu_capability(void)
vmx_caps.ept = (uint32_t) val;
vmx_caps.vpid = (uint32_t) (val >> 32);
if (!cpu_has_vmx_ept_cap(VMX_EPT_INVEPT))
panic("invept must be supported");
if (!cpu_has_vmx_ept_cap(VMX_EPT_INVEPT)) {
pr_fatal("%s, invept not supported\n", __func__);
return -ENODEV;
}
if (!cpu_has_vmx_vpid_cap(VMX_VPID_INVVPID)) {
pr_fatal("%s, invvpid not supported\n", __func__);
return -ENODEV;
}
return 0;
}
void invept(struct vcpu *vcpu)
@@ -495,8 +504,6 @@ void init_paging(void)
pr_dbg("HV MMU Initialization");
check_mmu_capability();
/* Allocate memory for Hypervisor PML4 table */
mmu_pml4_addr = alloc_paging_struct();