From b5cd872288a17b1af0220575faaa926be50c8ebb Mon Sep 17 00:00:00 2001
From: Jun Sun <jsun@junsun.net>
Date: Wed, 8 Apr 2026 03:40:51 +0000
Subject: [PATCH] gfxstream: include sys/syscall.h for memfd_create on riscv64

SharedMemory_posix.cpp has hardcoded __NR_memfd_create syscall numbers
for x86/arm but not riscv64.  Including sys/syscall.h provides the
correct kernel-defined value, so the hardcoded fallback is skipped.
---
 .../build_external/gfxstream/gfxstream.MODULE.bazel    |  1 +
 .../gfxstream/riscv64_memfd_create.patch               | 10 ++++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 base/cvd/build_external/gfxstream/riscv64_memfd_create.patch

diff --git a/base/cvd/build_external/gfxstream/gfxstream.MODULE.bazel b/base/cvd/build_external/gfxstream/gfxstream.MODULE.bazel
index 43bcc09d0e7..89bc85f3c32 100644
--- a/base/cvd/build_external/gfxstream/gfxstream.MODULE.bazel
+++ b/base/cvd/build_external/gfxstream/gfxstream.MODULE.bazel
@@ -8,5 +8,6 @@ git_repository(
     patches = [
         "@//build_external/gfxstream:PATCH.gfxstream.build_variables.patch",
         "@//build_external/gfxstream:bazel9.patch",
+        "@//build_external/gfxstream:riscv64_memfd_create.patch",
     ],
 )
diff --git a/base/cvd/build_external/gfxstream/riscv64_memfd_create.patch b/base/cvd/build_external/gfxstream/riscv64_memfd_create.patch
new file mode 100644
index 00000000000..389887d1601
--- /dev/null
+++ b/base/cvd/build_external/gfxstream/riscv64_memfd_create.patch
@@ -0,0 +1,10 @@
+--- a/common/base/SharedMemory_posix.cpp
++++ b/common/base/SharedMemory_posix.cpp
+@@ -16,6 +16,7 @@
+ #include <sys/stat.h>
+ #include <unistd.h>
+
++#include <sys/syscall.h>
+ #include "gfxstream/EintrWrapper.h"
+ #include "gfxstream/Macros.h"
+ #include "gfxstream/files/PathUtils.h"