Thread (79 messages) 79 messages, 10 authors, 2025-10-07

Re: [PATCH 28/34] KVM: selftests: Add GUEST_SYNC[1-6] macros for synchronizing more data

From: Fuad Tabba <hidden>
Date: 2023-11-06 11:45:26
Also in: kvm, kvm-riscv, kvmarm, linux-arm-kernel, linux-fsdevel, linux-mips, linux-mm, linux-riscv, lkml

On Sun, Nov 5, 2023 at 4:34 PM Paolo Bonzini [off-list ref] wrote:
From: Sean Christopherson <seanjc@google.com>

Add GUEST_SYNC[1-6]() so that tests can pass the maximum amount of
information supported via ucall(), without needing to resort to shared
memory.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: [ref]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
Reviewed-by: Fuad Tabba <redacted>
Tested-by: Fuad Tabba <redacted>

Cheers,
/fuad
quoted hunk ↗ jump to hunk
 tools/testing/selftests/kvm/include/ucall_common.h | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/ucall_common.h b/tools/testing/selftests/kvm/include/ucall_common.h
index ce33d306c2cb..0fb472a5a058 100644
--- a/tools/testing/selftests/kvm/include/ucall_common.h
+++ b/tools/testing/selftests/kvm/include/ucall_common.h
@@ -52,6 +52,17 @@ int ucall_nr_pages_required(uint64_t page_size);
 #define GUEST_SYNC_ARGS(stage, arg1, arg2, arg3, arg4) \
                                ucall(UCALL_SYNC, 6, "hello", stage, arg1, arg2, arg3, arg4)
 #define GUEST_SYNC(stage)      ucall(UCALL_SYNC, 2, "hello", stage)
+#define GUEST_SYNC1(arg0)      ucall(UCALL_SYNC, 1, arg0)
+#define GUEST_SYNC2(arg0, arg1)        ucall(UCALL_SYNC, 2, arg0, arg1)
+#define GUEST_SYNC3(arg0, arg1, arg2) \
+                               ucall(UCALL_SYNC, 3, arg0, arg1, arg2)
+#define GUEST_SYNC4(arg0, arg1, arg2, arg3) \
+                               ucall(UCALL_SYNC, 4, arg0, arg1, arg2, arg3)
+#define GUEST_SYNC5(arg0, arg1, arg2, arg3, arg4) \
+                               ucall(UCALL_SYNC, 5, arg0, arg1, arg2, arg3, arg4)
+#define GUEST_SYNC6(arg0, arg1, arg2, arg3, arg4, arg5) \
+                               ucall(UCALL_SYNC, 6, arg0, arg1, arg2, arg3, arg4, arg5)
+
 #define GUEST_PRINTF(_fmt, _args...) ucall_fmt(UCALL_PRINTF, _fmt, ##_args)
 #define GUEST_DONE()           ucall(UCALL_DONE, 0)

--
2.39.1
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