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Force 2 MB pages size in allocateLargePagesMemory() on Linux

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This commit is contained in:
SChernykh 2020-07-31 09:55:49 +02:00
parent cdb6287d89
commit 838cc08680
1 changed files with 11 additions and 1 deletions
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12
src/crypto/common/VirtualMemory_unix.cpp
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@ -82,7 +82,17 @@ void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
# elif defined(__FreeBSD__) # elif defined(__FreeBSD__)
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0); void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
# else # else
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
# if defined(MAP_HUGE_2MB)
constexpr int flag_2mb = MAP_HUGE_2MB;
# elif defined(MAP_HUGE_SHIFT)
constexpr int flag_2mb = (21 << MAP_HUGE_SHIFT);
# else
constexpr int flag_2mb = 0;
# endif
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | flag_2mb, 0, 0);
# endif # endif
return mem == MAP_FAILED ? nullptr : mem; return mem == MAP_FAILED ? nullptr : mem;