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host_memory: Use transparent huge pages where available

This commit is contained in:
Merry 2023-01-01 11:38:49 +00:00
parent 4d7be85e73
commit fd1831b65b
1 changed files with 15 additions and 0 deletions
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15
src/common/host_memory.cpp
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@ -393,12 +393,27 @@ public:
}
// Virtual memory initialization
#if defined(__FreeBSD__)
virtual_base =
static_cast<u8*>(mmap(nullptr, virtual_size, PROT_NONE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER, -1, 0));
if (virtual_base == MAP_FAILED) {
virtual_base = static_cast<u8*>(
mmap(nullptr, virtual_size, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
if (virtual_base == MAP_FAILED) {
LOG_CRITICAL(HW_Memory, "mmap failed: {}", strerror(errno));
throw std::bad_alloc{};
}
}
#else
virtual_base = static_cast<u8*>(mmap(nullptr, virtual_size, PROT_NONE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0));
if (virtual_base == MAP_FAILED) {
LOG_CRITICAL(HW_Memory, "mmap failed: {}", strerror(errno));
throw std::bad_alloc{};
}
madvise(virtual_base, virtual_size, MADV_HUGEPAGE);
#endif
good = true;
}