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