diff options
| author | Olof Johansson <olof@lixom.net> | 2019-07-02 15:13:20 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2019-07-02 15:13:20 -0700 |
| commit | 2659dc8d225c956b91d8a8e4ef05d91b2e985c02 (patch) | |
| tree | 5cb6e035b6f154668f4f144b66ccc825a0c73df5 /arch/riscv/mm | |
| parent | 521a503f5247de9a5cbc381f15c466a6c6f2793c (diff) | |
| parent | 4f2fe646770774d02d52a514849c181c9e0970f6 (diff) | |
Merge tag 'davinci-fixes-for-v5.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into arm/fixes
This set of patches fixes regressions introduced in v5.2 kernel when DA8xx
OHCI driver was converted over to use GPIO regulators.
* tag 'davinci-fixes-for-v5.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: da830-evm: fix GPIO lookup for OHCI
ARM: davinci: omapl138-hawk: add missing regulator constraints for OHCI
ARM: davinci: da830-evm: add missing regulator constraints for OHCI
+ Linux 5.2-rc7
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/riscv/mm')
| -rw-r--r-- | arch/riscv/mm/fault.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/mm/fault.c b/arch/riscv/mm/fault.c index fd7662afddea..f960c3f4ce47 100644 --- a/arch/riscv/mm/fault.c +++ b/arch/riscv/mm/fault.c @@ -16,6 +16,7 @@ #include <asm/pgalloc.h> #include <asm/ptrace.h> +#include <asm/tlbflush.h> /* * This routine handles page faults. It determines the address and the @@ -265,6 +266,15 @@ vmalloc_fault: pte_k = pte_offset_kernel(pmd_k, addr); if (!pte_present(*pte_k)) goto no_context; + + /* + * The kernel assumes that TLBs don't cache invalid + * entries, but in RISC-V, SFENCE.VMA specifies an + * ordering constraint, not a cache flush; it is + * necessary even after writing invalid entries. + */ + local_flush_tlb_page(addr); + return; } } |