49 lines
1.3 KiB
Diff
49 lines
1.3 KiB
Diff
From e1e0a76305927290d75b4aae56f1ed89d83da741 Mon Sep 17 00:00:00 2001
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From: Yousong Zhou <yszhou4tech@gmail.com>
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Date: Mon, 30 Mar 2020 12:48:58 +0800
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Subject: [PATCH] util/mmap-alloc: fix missing MAP_SYNC
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Quote musl-libc commit 9b57db3f958 ("add MAP_SYNC and
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MAP_SHARED_VALIDATE from linux v4.15")
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> for synchronous page faults, new in linux commit
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> 1c9725974074a047f6080eecc62c50a8e840d050 and
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> b6fb293f2497a9841d94f6b57bd2bb2cd222da43
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> note that only targets that use asm-generic/mman.h have this new
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> flag defined, so undef it on other targets (mips*, powerpc*).
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Fixes 119906afa5c ("util/mmap-alloc: support MAP_SYNC in
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qemu_ram_mmap()")
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Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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---
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util/mmap-alloc.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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--- a/util/mmap-alloc.c
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+++ b/util/mmap-alloc.c
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@@ -12,9 +12,6 @@
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#ifdef CONFIG_LINUX
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#include <linux/mman.h>
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-#else /* !CONFIG_LINUX */
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-#define MAP_SYNC 0x0
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-#define MAP_SHARED_VALIDATE 0x0
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#endif /* CONFIG_LINUX */
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#include "qemu/osdep.h"
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@@ -57,6 +54,13 @@ QemuFsType qemu_fd_getfs(int fd)
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#endif
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}
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+#ifndef MAP_SYNC
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+#define MAP_SYNC 0x0
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+#endif
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+#ifndef MAP_SHARED_VALIDATE
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+#define MAP_SHARED_VALIDATE 0x0
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+#endif
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+
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size_t qemu_fd_getpagesize(int fd)
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{
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#ifdef CONFIG_LINUX
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