diff options
author | Vishal Annapurve <vannapurve@google.com> | 2023-10-27 21:22:10 +0300 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-11-14 16:01:06 +0300 |
commit | 01244fce2fa22176e46609c051f6fe15cf81e188 (patch) | |
tree | 93732c6ae786a6530d17b5ed6d3499548d2ae747 /tools/testing/selftests/kvm/include/x86_64 | |
parent | f7fa67495d118f734f98b406fd46888616b4a3c3 (diff) | |
download | linux-01244fce2fa22176e46609c051f6fe15cf81e188.tar.xz |
KVM: selftests: Add helpers to do KVM_HC_MAP_GPA_RANGE hypercalls (x86)
Add helpers for x86 guests to invoke the KVM_HC_MAP_GPA_RANGE hypercall,
which KVM will forward to userspace and thus can be used by tests to
coordinate private<=>shared conversions between host userspace code and
guest code.
Signed-off-by: Vishal Annapurve <vannapurve@google.com>
[sean: drop shared/private helpers (let tests specify flags)]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20231027182217.3615211-29-seanjc@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86_64')
-rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/processor.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 25bc61dac5fb..a84863503fcb 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -15,6 +15,7 @@ #include <asm/msr-index.h> #include <asm/prctl.h> +#include <linux/kvm_para.h> #include <linux/stringify.h> #include "../kvm_util.h" @@ -1194,6 +1195,20 @@ uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2, uint64_t __xen_hypercall(uint64_t nr, uint64_t a0, void *a1); void xen_hypercall(uint64_t nr, uint64_t a0, void *a1); +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); +} + +static inline void kvm_hypercall_map_gpa_range(uint64_t gpa, uint64_t size, + uint64_t flags) +{ + uint64_t ret = __kvm_hypercall_map_gpa_range(gpa, size, flags); + + GUEST_ASSERT(!ret); +} + void __vm_xsave_require_permission(uint64_t xfeature, const char *name); #define vm_xsave_require_permission(xfeature) \ |