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| author |   Tong Tiangen <tongtiangen@huawei.com> | 2022-06-21 07:26:29 +0000 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2022-06-28 12:11:00 +0100 |
| commit | 4953fc3d3270b7466a3b334838b76308c75f7751 (patch) | |
| tree | d4d99ecc033576f5dcd3ba8f7b1e83db363ef24f /arch/arm64/mm/extable.c | |
| parent | Linux 5.19-rc3 (diff) | |
| download | linux-dev-4953fc3d3270b7466a3b334838b76308c75f7751.tar.xz linux-dev-4953fc3d3270b7466a3b334838b76308c75f7751.zip | |
arm64: extable: add new extable type EX_TYPE_KACCESS_ERR_ZERO support
Currently, The extable type EX_TYPE_UACCESS_ERR_ZERO is used by
__get/put_kernel_nofault(), but those helpers are not uaccess type, so we
add a new extable type EX_TYPE_KACCESS_ERR_ZERO which can be used by
__get/put_kernel_no_fault().
This is also to prepare for distinguishing the two types in machine check
safe process.
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Tong Tiangen <tongtiangen@huawei.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220621072638.1273594-2-tongtiangen@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/mm/extable.c')
| -rw-r--r-- | arch/arm64/mm/extable.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/mm/extable.c b/arch/arm64/mm/extable.c index 489455309695..056591e5ca80 100644 --- a/arch/arm64/mm/extable.c +++ b/arch/arm64/mm/extable.c @@ -77,6 +77,7 @@ bool fixup_exception(struct pt_regs *regs) case EX_TYPE_BPF: return ex_handler_bpf(ex, regs); case EX_TYPE_UACCESS_ERR_ZERO: + case EX_TYPE_KACCESS_ERR_ZERO: return ex_handler_uaccess_err_zero(ex, regs); case EX_TYPE_LOAD_UNALIGNED_ZEROPAD: return ex_handler_load_unaligned_zeropad(ex, regs); |