Hi Zhenyu, On 2020/3/21 20:16, Zhenyu Ye wrote:
-- ChangeList: v3: use vma->vm_flags to replace mm->context.flags. v2: build the patch on Marc's NV series[1]. v1: add support for TTL field in arm64. -- ARMv8.4-TTL provides the TTL field in tlbi instruction to indicate the level of translation table walk holding the leaf entry for the address that is being invalidated. Hardware can use this information to determine if there was a risk of splintering. Marc has provided basic support for ARM64-TTL features on his NV series[1] patches. NV is a large feature, however, only patches 62[2] and 67[3] are need by this patch set. ** You only need read those two patches before review this patch. **
It'd be good if you can put the whole thing into a series, otherwise people will have difficulty when reviewing and testing it... I haven't tracked the previous versions. If Marc is OK to share the two patches below [2][3], I'd suggest you to pick them up, add them in your series, rebase on top of mainline and resend it. Thanks, Zenghui
Some of this patch depends on a feature powered by @Will Deacon two years ago, which tracking the level of page tables in mm_gather. See more in commit a6d60245. [1] git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/nv-5.6-rc1 [2] https://lore.kernel.org/linux-arm-kernel/20200211174938.27809-63-maz@xxxxxxxxxx/ [3] https://lore.kernel.org/linux-arm-kernel/20200211174938.27809-68-maz@xxxxxxxxxx/ Zhenyu Ye (4): arm64: Add level-hinted TLB invalidation helper to tlbi_user mm: Add page table level flags to vm_flags arm64: tlb: Use translation level hint in vm_flags mm: Set VM_LEVEL flags in some tlb_flush functions arch/arm64/include/asm/mmu.h | 2 ++ arch/arm64/include/asm/tlb.h | 12 +++++++++ arch/arm64/include/asm/tlbflush.h | 44 ++++++++++++++++++++++++++----- arch/arm64/mm/hugetlbpage.c | 4 +-- arch/arm64/mm/mmu.c | 14 ++++++++++ include/asm-generic/pgtable.h | 16 +++++++++-- include/linux/mm.h | 10 +++++++ include/trace/events/mmflags.h | 15 ++++++++++- mm/huge_memory.c | 8 +++++- 9 files changed, 113 insertions(+), 12 deletions(-)
