x86-64

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Why does unaligned access to mmap'ed memory sometimes segfault on AMD64?
user_34768490
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8
1
4316
auto-vectorization x86-64 mmap gcc c
What specifically marks an x86 cache line as dirty - any write, or is an explicit change required?
user_4060680
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13
3
1537
memory-bandwidth x86-64 cpu-cache x86 cpu-architecture
How to determine cause of CPU halt
user_89603420
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3
0
218
x86-64 linux-kernel
yasm movsx, movsxd invalid size for operand 2
Admin1
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3
1
1618
yasm nasm x86-64 assembly
Mach-O 64-bit format does not support 32-bit absolute addresses. NASM Accessing Array
user_76370690
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7
1
3462
mach-o nasm x86-64 assembly macos
How do I transform a number into a char* for syscall write in x86 64 Assembly GAS
user_88977220
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3
0
898
x86-64 gnu-assembler assembly int
rsp doesn't move when entering new function
user_83273200
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4
1
356
red-zone x86-64 assembly stack
Why is the construction of std::optional<int> more expensive than a std::pair<int, bool>?
user_5986960
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71
4
4957
c++17 x86-64 assembly c++ performance
What are _mm_prefetch() locality hints?
user_19158540
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31
1
17154
intrinsics x86-64 prefetch cpu-cache c++
Why in x86-64 the virtual address are 4 bits shorter than physical (48 bits vs. 52 long)?
Admin1
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23
2
6829
mmu virtual-memory x86-64 memory-address assembly
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