From: Peter Gonda <pgonda@google.com>
To: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, marcorr@google.com,
seanjc@google.com, michael.roth@amd.com, thomas.lendacky@amd.com,
joro@8bytes.org, mizhang@google.com, pbonzini@redhat.com,
andrew.jones@linux.dev, pgonda@google.com, vannapurve@google.com
Subject: [PATCH V5 6/7] KVM: selftests: Update ucall pool to allocate from shared memory
Date: Tue, 18 Oct 2022 13:58:44 -0700 [thread overview]
Message-ID: <20221018205845.770121-7-pgonda@google.com> (raw)
In-Reply-To: <20221018205845.770121-1-pgonda@google.com>
Update the per VM ucall_header allocation from vm_vaddr_alloc() to
vm_vaddr_alloc_shared(). This allows encrypted guests to use ucall pools
by placing their shared ucall structures in unencrypted (shared) memory.
No behavior change for non encrypted guests.
Signed-off-by: Peter Gonda <pgonda@google.com>
---
tools/testing/selftests/kvm/lib/ucall_common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/kvm/lib/ucall_common.c b/tools/testing/selftests/kvm/lib/ucall_common.c
index fcae96461e46..b4168e562255 100644
--- a/tools/testing/selftests/kvm/lib/ucall_common.c
+++ b/tools/testing/selftests/kvm/lib/ucall_common.c
@@ -22,7 +22,7 @@ void ucall_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa)
vm_vaddr_t vaddr;
int i;
- vaddr = vm_vaddr_alloc(vm, sizeof(*hdr), KVM_UTIL_MIN_VADDR);
+ vaddr = vm_vaddr_alloc_shared(vm, sizeof(*hdr), KVM_UTIL_MIN_VADDR);
hdr = (struct ucall_header *)addr_gva2hva(vm, vaddr);
memset(hdr, 0, sizeof(*hdr));
--
2.38.0.413.g74048e4d9e-goog
next prev parent reply other threads:[~2022-10-18 20:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-18 20:58 [PATCH V5 0/7] KVM: selftests: Add simple SEV test Peter Gonda
2022-10-18 20:58 ` [PATCH V5 1/7] KVM: selftests: sparsebit: add const where appropriate Peter Gonda
2022-10-18 20:58 ` [PATCH V5 2/7] KVM: selftests: add hooks for managing protected guest memory Peter Gonda
2022-10-18 20:58 ` [PATCH V5 3/7] KVM: selftests: handle protected bits in page tables Peter Gonda
2022-10-18 20:58 ` [PATCH V5 4/7] KVM: selftests: add support for protected vm_vaddr_* allocations Peter Gonda
2022-10-18 20:58 ` [PATCH V5 5/7] KVM: selftests: add library for creating/interacting with SEV guests Peter Gonda
2022-12-21 21:13 ` Ackerley Tng
2023-01-09 21:19 ` Peter Gonda
2022-12-22 22:19 ` Vishal Annapurve
2023-01-09 21:20 ` Peter Gonda
2022-10-18 20:58 ` Peter Gonda [this message]
2022-10-18 20:58 ` [PATCH V5 7/7] KVM: selftests: Add simple sev vm testing Peter Gonda
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