Hi Anshuman,
On 03/12/2018 13:50, Anshuman Khandual wrote:
On 10/31/2018 11:27 PM, Punit Agrawal wrote:
Introduce helpers to abstract architectural handling of the conversion
of pfn to page table entries and marking a PMD page table entry as a
block entry.
Why is this necessary ? we would still need to access PMD, PUD as is
without any conversion. IOW KVM knows the breakdown of the page table
at various levels. Is this something required from generic KVM code ?
The KVM MMU code is shared for arm32 and arm64. Hence we need arch specific
helpers to hide how we deal with the levels. e.g, PUD never exists for
arm32.
The helpers are introduced in preparation for supporting PUD hugepages
at stage 2 - which are supported on arm64 but do not exist on arm.
Some of these patches (including the earlier two) are good on it's
own. Do we have still mention in commit message about the incoming PUD
enablement as the reason for these cleanup patches ?
Cheers
Suzuki
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