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(likely) fixes for virtual dmem?

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lizzie
2025-12-01 10:58:26 +00:00
parent 2aeb14b096
commit 628b1a84b9
1 changed files with 11 additions and 7 deletions
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18
src/common/host_memory.cpp
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@@ -34,15 +34,19 @@
// FreeBSD
#ifndef MAP_NORESERVE
#define MAP_NORESERVE 0
# define MAP_NORESERVE 0
#endif
// Solaris 11 and illumos
#ifndef MAP_ALIGNED_SUPER
#define MAP_ALIGNED_SUPER 0
# define MAP_ALIGNED_SUPER 0
#endif
// macOS
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
# define MAP_ANONYMOUS MAP_ANON
#endif
// PlayStation 4
#ifndef MAP_SYSTEM
# define MAP_SYSTEM 0
#endif
#endif // ^^^ POSIX ^^^
@@ -439,8 +443,8 @@ static void* ChooseVirtualBase(size_t virtual_size) {
#else
static void* ChooseVirtualBase(size_t virtual_size) {
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__sun__) || defined(__HAIKU__) || defined(__managarm__) || defined(__AIX__)
void* virtual_base = mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_ALIGNED_SUPER, -1, 0);
#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__OpenBSD__) || defined(__sun__) || defined(__HAIKU__) || defined(__managarm__) || defined(__AIX__) || defined(__OPENORBIS__)
void* virtual_base = mmap(nullptr, virtual_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE | MAP_ALIGNED_SUPER | MAP_SYSTEM, -1, 0);
if (virtual_base != MAP_FAILED)
return virtual_base;
#endif
@@ -539,13 +543,13 @@ public:
}
if (use_anon) {
LOG_WARNING(Common_Memory, "Using private mappings instead of shared ones");
backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0));
backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_SYSTEM, -1, 0));
if (fd > 0) {
fd = -1;
close(fd);
}
} else {
backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0));
backing_base = static_cast<u8*>(mmap(nullptr, backing_size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_SYSTEM, fd, 0));
}
ASSERT_MSG(backing_base != MAP_FAILED, "mmap failed: {}", strerror(errno));