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KVM, x86: add architectural support code for #VE

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Dump the contents of the #VE info data structure and assert that #VE does
not happen, but do not yet do anything with it.

No functional change intended, separated for clarity only.

Extracted from a patch by Isaku Yamahata <isaku.yamahata@intel.com>.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-04-05 13:43:29 -04:00
parent 949019b982
commit fb29541ead
2 changed files with 16 additions and 0 deletions
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12
arch/x86/include/asm/vmx.h
View File

@ -71,6 +71,7 @@
#define SECONDARY_EXEC_ENCLS_EXITING VMCS_CONTROL_BIT(ENCLS_EXITING)
#define SECONDARY_EXEC_RDSEED_EXITING VMCS_CONTROL_BIT(RDSEED_EXITING)
#define SECONDARY_EXEC_ENABLE_PML VMCS_CONTROL_BIT(PAGE_MOD_LOGGING)
#define SECONDARY_EXEC_EPT_VIOLATION_VE VMCS_CONTROL_BIT(EPT_VIOLATION_VE)
#define SECONDARY_EXEC_PT_CONCEAL_VMX VMCS_CONTROL_BIT(PT_CONCEAL_VMX)
#define SECONDARY_EXEC_ENABLE_XSAVES VMCS_CONTROL_BIT(XSAVES)
#define SECONDARY_EXEC_MODE_BASED_EPT_EXEC VMCS_CONTROL_BIT(MODE_BASED_EPT_EXEC)
@ -226,6 +227,8 @@ enum vmcs_field {
VMREAD_BITMAP_HIGH = 0x00002027,
VMWRITE_BITMAP = 0x00002028,
VMWRITE_BITMAP_HIGH = 0x00002029,
VE_INFORMATION_ADDRESS = 0x0000202A,
VE_INFORMATION_ADDRESS_HIGH = 0x0000202B,
XSS_EXIT_BITMAP = 0x0000202C,
XSS_EXIT_BITMAP_HIGH = 0x0000202D,
ENCLS_EXITING_BITMAP = 0x0000202E,
@ -631,4 +634,13 @@ enum vmx_l1d_flush_state {
extern enum vmx_l1d_flush_state l1tf_vmx_mitigation;
struct vmx_ve_information {
u32 exit_reason;
u32 delivery;
u64 exit_qualification;
u64 guest_linear_address;
u64 guest_physical_address;
u16 eptp_index;
};
#endif

4
arch/x86/kvm/vmx/vmx.c
View File

@ -6408,6 +6408,10 @@ void dump_vmcs(struct kvm_vcpu *vcpu)
if (secondary_exec_control & SECONDARY_EXEC_ENABLE_VPID)
pr_err("Virtual processor ID = 0x%04x\n",
vmcs_read16(VIRTUAL_PROCESSOR_ID));
if (secondary_exec_control & SECONDARY_EXEC_EPT_VIOLATION_VE) {
pr_err("VE info address = 0x%016llx\n",
vmcs_read64(VE_INFORMATION_ADDRESS));
}
}
/*