Messages in this thread | | | Date | Fri, 16 Apr 2004 01:32:40 -0400 | From | Brian Gerst <> | Subject | Re: How does ioremap() get non-cached mappings |
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Nagendra Singh Tomar wrote: > ioremap() function in x86 arch code does not seem to be setting _PAGE_PCD > bit in the PTE. How then does it give non-cached mapping to MMIO mappings > for memory on some interface card. I have gone thru some old threads on > this, which have concluded that it does give non-cached mappings, and > moerover ioremap seems to work fine whenever I have used to map any PCI > card memory, > Is it guaranteed thru the means of MTRR ? >
ioremap_nocache()
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