tree ab59e43380e7b8e32b79875eb26a5c27e5046957
parent c35f1b87fc595807ff15d2834d241f9771497205
author ShihPo Hung <shihpo.hung@sifive.com> 1560745577 +0800
committer Paul Walmsley <paul.walmsley@sifive.com> 1560768284 -0700

riscv: mm: synchronize MMU after pte change

Because RISC-V compliant implementations can cache invalid entries
in TLB, an SFENCE.VMA is necessary after changes to the page table.
This patch adds an SFENCE.vma for the vmalloc_fault path.

Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
[paul.walmsley@sifive.com: reversed tab->whitespace conversion,
 wrapped comment lines]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org
Cc: stable@vger.kernel.org