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utils::shm: allow 2M hugepages on demand

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Nekotekina 2020-11-25 07:16:49 +03:00
parent 487b572aa6
commit 2b674d4d8c
1 changed files with 14 additions and 1 deletions
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15
rpcs3/util/vm_native.cpp
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@ -15,6 +15,7 @@
#ifdef __linux__ #ifdef __linux__
#include <sys/syscall.h> #include <sys/syscall.h>
#include <linux/memfd.h>
#ifdef __NR_memfd_create #ifdef __NR_memfd_create
#elif __x86_64__ #elif __x86_64__
@ -216,7 +217,19 @@ namespace utils
m_handle = ::CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, m_size, NULL); m_handle = ::CreateFileMappingW(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, 0, m_size, NULL);
verify(HERE), m_handle != INVALID_HANDLE_VALUE; verify(HERE), m_handle != INVALID_HANDLE_VALUE;
#elif __linux__ #elif __linux__
m_file = ::memfd_create_("", 0); m_file = -1;
#ifdef MFD_HUGETLB
// Try to use 2MB pages for 2M-aligned shm
if (m_size % 0x200000 == 0 && flags & 2)
{
m_file = ::memfd_create_("2M", MFD_HUGETLB | MFD_HUGE_2MB);
}
#endif
if (m_file == -1)
{
m_file = ::memfd_create_("", 0);
}
verify(HERE), m_file >= 0; verify(HERE), m_file >= 0;
verify(HERE), ::ftruncate(m_file, m_size) >= 0; verify(HERE), ::ftruncate(m_file, m_size) >= 0;
#else #else