This series adds few optimizations to reduce the trap cost in the tlb flush path. We should only make SBI calls to remote tlb flush only if absolutely required.
This series is based on Christoph's series: http://lists.infradead.org/pipermail/linux-riscv/2019-August/006148.html Changes from v3->v4 1. Simplify the local vs remote usecase. 2. Reorder the patches in the series. Changes from v2->v3: 1. Split the patches into smaller one per optimization. Atish Patra (3): RISC-V: Do not invoke SBI call if cpumask is empty RISC-V: Issue a local tlbflush if possible. RISC-V: Issue a tlb page flush if possible arch/riscv/mm/tlbflush.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) -- 2.21.0
