Re: [patch 0/7] x86 PAT: track pfnmap mappings with remap_pfn_rangevm_insert_pfn - v3

[H. Peter Anvin]

venkatesh.pallipadi@xxxxxxxxx wrote:
> v3: Patches updated based on Andrew's comments on the earlier version.
> 
> Drivers use mmap followed by pgprot_* and remap_pfn_range or vm_insert_pfn,
> in order to export reserved memory to userspace. Currently, such mappings are
> not tracked and hence not kept consistent with other mappings (/dev/mem,
> pci resource, ioremap) for the sme memory, that may exist in the system.
> 
> The following patchset adds x86 PAT attribute tracking and untracking for
> pfnmap related APIs.
> 
> First three patches in the patchset are changing the generic mm code to fit
> in this tracking. Last four patches are x86 specific to make things work
> with x86 PAT code. The patchset aso introduces pgprot_writecombine interface,
> which gives writecombine mapping when enabled, falling back to
> pgprot_noncached otherwise.

Series applied to tip:x86/pat2, thanks!

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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