Will Deacon 3d65b6bbc0 arm64: tlbi: Set MAX_TLBI_OPS to PTRS_PER_PTE ... In order to reduce the possibility of soft lock-ups, we bound the maximum number of TLBI operations performed by a single call to flush_tlb_range() to an arbitrary constant of 1024. Whilst this does the job of avoiding lock-ups, we can actually be a bit smarter by defining this as PTRS_PER_PTE. Due to the structure of our page tables, using PTRS_PER_PTE means that an outer loop calling flush_tlb_range() for entire table entries will end up performing just a single TLBI operation for each entry. As an example, mremap()ing a 1GB range mapped using 4k pages now requires only 512 TLBI operations when moving the page tables as opposed to 262144 operations (512*512) when using the current threshold of 1024. Cc: Joel Fernandes <joel@joelfernandes.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>		2018-11-27 19:01:21 +00:00
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asm	arm64: tlbi: Set MAX_TLBI_OPS to PTRS_PER_PTE	2018-11-27 19:01:21 +00:00
uapi/asm	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-10-25 11:14:36 -07:00