diff mbox series

[RFC,v5,04/16] KVM: TDX: Pass size to tdx_measure_page()

Message ID 8c0aa0968cb1f995cbd4552e1f2cf79ac443475b.1697473009.git.isaku.yamahata@intel.com (mailing list archive)
State New, archived
Headers show
Series KVM TDX: TDP MMU: large page support | expand

Commit Message

Isaku Yamahata Oct. 16, 2023, 4:20 p.m. UTC 
From: Xiaoyao Li <xiaoyao.li@intel.com>

Extend tdx_measure_page() to pass size info so that it can measure
large page as well.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
 arch/x86/kvm/vmx/tdx.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index 471128946e63..bda2c8fa895c 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -1415,13 +1415,15 @@  void tdx_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa, int pgd_level)
 	td_vmcs_write64(to_tdx(vcpu), SHARED_EPT_POINTER, root_hpa & PAGE_MASK);
 }
 
-static void tdx_measure_page(struct kvm_tdx *kvm_tdx, hpa_t gpa)
+static void tdx_measure_page(struct kvm_tdx *kvm_tdx, hpa_t gpa, int size)
 {
 	struct tdx_module_args out;
 	u64 err;
 	int i;
 
-	for (i = 0; i < PAGE_SIZE; i += TDX_EXTENDMR_CHUNKSIZE) {
+	WARN_ON_ONCE(size % TDX_EXTENDMR_CHUNKSIZE);
+
+	for (i = 0; i < size; i += TDX_EXTENDMR_CHUNKSIZE) {
 		err = tdh_mr_extend(kvm_tdx->tdr_pa, gpa + i, &out);
 		if (KVM_BUG_ON(err, &kvm_tdx->kvm)) {
 			pr_tdx_error(TDH_MR_EXTEND, err, &out);
@@ -1543,7 +1545,7 @@  static int tdx_sept_page_add(struct kvm *kvm, gfn_t gfn,
 		tdx_unpin(kvm, pfn);
 		return -EIO;
 	} else if (measure)
-		tdx_measure_page(kvm_tdx, gpa);
+		tdx_measure_page(kvm_tdx, gpa, KVM_HPAGE_SIZE(level));
 
 	return 0;