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(parent: 6384423) | patch
RISC-V: Issue a local tlbflush if possible.
authorAtish Patra <atish.patra@wdc.com>
Thu, 22 Aug 2019 07:51:50 +0000 (00:51 -0700)
committerPaul Walmsley <paul.walmsley@sifive.com>
Tue, 29 Oct 2019 18:32:18 +0000 (11:32 -0700)
commit31738ede9b339c90216b8fd10da0b1567a041f06
tree7dc501804afb05a31fbf29f90091a33cf75b14aftree | snapshot
parent6384423f49c804dbca02add1945e0ccf922cb522commit | diff
RISC-V: Issue a local tlbflush if possible.

In RISC-V, tlb flush happens via SBI which is expensive. If the local
cpu is the only cpu in cpumask, there is no need to invoke a SBI call.

Just do a local flush and return.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
arch/riscv/mm/tlbflush.c diff | blob | history
Domain: System / Kernel;