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pro vyhledávání: '"Alex Markuze"'
Autor:
Austin Bolen, Igor Smolyar, Alex Markuze, Dan Tsafrir, Gerd Zellweger, Haggai Eran, Boris Pismenny, Liran Liss, Adam Morrison
Publikováno v:
ASPLOS
In a multi-CPU server, memory modules are local to the CPU to which they are connected, forming a nonuniform memory access (NUMA) architecture. Because non-local accesses are slower than local accesses, the NUMA architecture might degrade application
Publikováno v:
ASPLOS
Malicious I/O devices might compromise the OS using DMAs. The OS therefore utilizes the IOMMU to map and unmap every target buffer right before and after its DMA is processed, thereby restricting DMAs to their designated locations. This usage model,
Publikováno v:
ASPLOS
DMA operations can access memory buffers only if they are "mapped" in the IOMMU, so operating systems protect themselves against malicious/errant network DMAs by mapping and unmapping each packet immediately before/after it is DMAed. This approach wa