Hi Chintan, Thanks for sticking with this. I've reviewed the series now and I'm keen for it to land in mainline. Just a couple of things below.
On Wed, Jun 06, 2018 at 12:31:18PM +0530, Chintan Pandya wrote: > This series of patches re-bring huge vmap back for arm64. > > Patch 1/3 has been taken by Toshi in his series of patches > by name "[PATCH v3 0/3] fix free pmd/pte page handlings on x86" > to avoid merge conflict with this series. > > These patches are tested on 4.16 kernel with Cortex-A75 based SoC. > > The test used for verifying these patches is a stress test on > ioremap/unmap which tries to re-use same io-address but changes > size of mapping randomly i.e. 4K to 2M to 1G etc. The same test > used to reproduce 3rd level translation fault without these fixes > (and also of course with Revert "arm64: Enforce BBM for huge IO/VMAP > mappings" being part of the tree). [...] > These patches can also go into '-stable' branch (if accepted) > for 4.6 onwards. Not sure we need to target -stable, since we solved the crash by disabling the use of huge io mappings. > arch/arm64/include/asm/tlbflush.h | 7 ++++++ > arch/arm64/mm/mmu.c | 48 > +++++++++++++++++++++++++++++++++++---- > arch/x86/mm/pgtable.c | 8 ++++--- > include/asm-generic/pgtable.h | 8 +++---- > lib/ioremap.c | 4 ++-- If you get an ack from the x86 folks, then I could take all of this via arm64. Alternatively, now that I've reviewed the series this could happily go via another tree (e.g. akpm). Thanks, Will
