linux-kernel - [V3 PATCH 1/8] KVM: selftests: private

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Date:   Fri, 23 Dec 2022 00:13:45 +0000
From:   Vishal Annapurve <vannapurve@...gle.com>
To:     x86@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Cc:     pbonzini@...hat.com, vkuznets@...hat.com, wanpengli@...cent.com,
        jmattson@...gle.com, joro@...tes.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        hpa@...or.com, shuah@...nel.org, yang.zhong@...el.com,
        drjones@...hat.com, ricarkol@...gle.com, aaronlewis@...gle.com,
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        axelrasmussen@...gle.com, maciej.szmigiero@...cle.com,
        mizhang@...gle.com, bgardon@...gle.com, ackerleytng@...gle.com,
        Vishal Annapurve <vannapurve@...gle.com>
Subject: [V3 PATCH 1/8] KVM: selftests: private_mem: Use native hypercall

CVMs need to execute hypercalls as per the cpu type without relying on
KVM emulation.

Execute hypercall from the guest using native instructions.

Signed-off-by: Vishal Annapurve <vannapurve@...gle.com>
---
 tools/testing/selftests/kvm/lib/x86_64/private_mem.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/lib/x86_64/private_mem.c b/tools/testing/selftests/kvm/lib/x86_64/private_mem.c
index 2b97fc34ec4a..5a8fd8c3bc04 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/private_mem.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/private_mem.c
@@ -24,7 +24,7 @@
 static inline uint64_t __kvm_hypercall_map_gpa_range(uint64_t gpa, uint64_t size,
 	uint64_t flags)
 {
-	return kvm_hypercall(KVM_HC_MAP_GPA_RANGE, gpa, size >> PAGE_SHIFT, flags, 0);
+	return kvm_native_hypercall(KVM_HC_MAP_GPA_RANGE, gpa, size >> PAGE_SHIFT, flags, 0);
 }
 
 static inline void kvm_hypercall_map_gpa_range(uint64_t gpa, uint64_t size,
-- 
2.39.0.314.g84b9a713c41-goog