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Fix overlapping addresses returned by mmap

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kd-11 2024-08-29 02:55:10 +03:00 committed by kd-11
parent 23788b04c6
commit ce9024efc5
2 changed files with 8 additions and 2 deletions
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2
Utilities/JITASM.cpp
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@ -9,7 +9,7 @@
#include "util/v128.hpp"
#include "util/simd.hpp"
#if defined(__linux__) || defined(__APPLE__)
#ifdef __linux__
#include <unistd.h>
#define CAN_OVERCOMMIT
#endif

8
rpcs3/util/vm_native.cpp
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@ -260,7 +260,13 @@ namespace utils
#ifdef __APPLE__
#ifdef ARCH_ARM64
auto ptr = ::mmap(use_addr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
// NOTE: On MacOS, parallel calls to mmap can return the same address more than once. Trying to madvise the same address twice throws EPERM.
static std::mutex mmap_lock;
void* ptr;
{
std::lock_guard lock(mmap_lock);
ptr = ::mmap(use_addr, size, PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
}
#else
auto ptr = ::mmap(use_addr, size, PROT_NONE, MAP_ANON | MAP_PRIVATE | MAP_JIT | c_map_noreserve, -1, 0);
#endif