diff options
| author | Pekka Enberg <penberg@kernel.org> | 2020-08-25 18:42:54 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-09-16 03:46:04 +0200 |
| commit | 6747430197ed414be37e843064a7f365f4d1fd57 (patch) | |
| tree | c375d5ab5f89bd62656e5467cde41e121c940bb4 | |
| parent | riscv/mm/fault: Simplify mm_fault_error() (diff) | |
| download | linux-6747430197ed414be37e843064a7f365f4d1fd57.tar.xz linux-6747430197ed414be37e843064a7f365f4d1fd57.zip | |
riscv/mm/fault: Move FAULT_FLAG_WRITE handling in do_page_fault()
Let's handle the translation of EXC_STORE_PAGE_FAULT to FAULT_FLAG_WRITE
once before looking up the VMA. This makes it easier to extract access
error logic in the next patch.
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| -rw-r--r-- | arch/riscv/mm/fault.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index 3b430fb18de3..bdc70d3d507f 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -208,6 +208,9 @@ asmlinkage void do_page_fault(struct pt_regs *regs) perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, addr); + if (cause == EXC_STORE_PAGE_FAULT) + flags |= FAULT_FLAG_WRITE; + retry: mmap_read_lock(mm); vma = find_vma(mm, addr); @@ -251,7 +254,6 @@ good_area: bad_area(regs, mm, code, addr); return; } - flags |= FAULT_FLAG_WRITE; break; default: panic("%s: unhandled cause %lu", __func__, cause); |