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Originally posted by THEFOOL
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Smile if you have an AMD chip (for now).
Do Meltdown and Spectre affect AMD CPUs?
AMD claims that its CPU architecture is immune to the attacks, though this statement may have been made prematurely. Because exploits have different variants, current analyses only show that AMD CPUs are safe against the current version of Meltdown, which focuses primarily on Intel?s architecture. The Meltdown paper has the following statement:
"We also tried to reproduce the Meltdown bug on several ARM and AMD CPUs. However, we did not manage to successfully leak kernel memory with the attack described in Section 5, neither on ARM nor on AMD. The reasons for this can be manifold. First of all, our implementation might simply be too slow and a more optimized version might succeed. For instance, a more shallow out-of-order execution pipeline could tip the race condition towards against the data leakage. Similarly, if the processor lacks certain features, e.g., no re-order buffer, our current implementation might not be able to leak data. However, for both ARM and AMD, the toy example as described in Section 3 works reliably, indicating that out-of-order execution generally occurs and instructions past illegal memory accesses are also performed."
So far, then, AMD processors haven't been affected by Meltdown, but they're not immune against Spectre, which uses a wider range of speculative execution features. Spectre impacts CPUs from AMD, ARM, and Intel, and the cure may in some ways be worse than the disease, depending on how much it impairs performance.
เอเอ็มดีอ้างว่าสถาปัตยกรรมของซีพียูมีภูมิคุ้มกันต่อการโจมตี
ในปัจจุบันแสดงให้เห็นว่าซีพียู AMDรุ่นปัจจุบันของ มีความปลอดภัย กับ Meltdown
เรายังได้พยายามสร้างบัฟเฟอร์ Meltdown บนเครื่อง ARM และ AMD หลายตัวอย่างไรก็ตาม เราไม่สามารถไม่ประสบผลสำเร็จ จัดการหน่วยความจำเคอร์เนลได้ด้วยการโจมตี
จนถึงตอนนี้โปรเซสเซอร์ AMD ไม่ได้รับผลกระทบจาก Meltdown
สรุปอีกรอบ สบายใจได้
Smile if you have an AMD chip (for now).
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