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| author |  Mark Rutland <mark.rutland@arm.com>
| 2020-12-02 13:15:56 +0000 |
|---|---|---|
| committer |  Catalin Marinas <catalin.marinas@arm.com>
| 2020-12-02 19:49:11 +0000 |
| commit | b5a5a01d8e9a44ecb18dc31d471233cad2f88291 (patch) | |
| tree | 8e5cfa7153eb095491e7d611bdddbfe2d14246ca /arch/arm64/kernel/signal.c | |
| parent | arm64: uaccess: remove set_fs() (diff) | |
| download | linux-b5a5a01d8e9a44ecb18dc31d471233cad2f88291.tar.gz linux-b5a5a01d8e9a44ecb18dc31d471233cad2f88291.tar.bz2 linux-b5a5a01d8e9a44ecb18dc31d471233cad2f88291.zip | |
arm64: uaccess: remove addr_limit_user_check()
Now that set_fs() is gone, addr_limit_user_check() is redundant. Remove
the checks and associated thread flag.
To ensure that _TIF_WORK_MASK can be used as an immediate value in an
AND instruction (as it is in `ret_to_user`), TIF_MTE_ASYNC_FAULT is
renumbered to keep the constituent bits of _TIF_WORK_MASK contiguous.
There should be no functional change as a result of this patch.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201202131558.39270-11-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/signal.c')
| -rw-r--r-- | arch/arm64/kernel/signal.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index a8184cad8890..af5c6c6638f7 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -922,9 +922,6 @@ asmlinkage void do_notify_resume(struct pt_regs *regs, trace_hardirqs_off(); do { - /* Check valid user FS if needed */ - addr_limit_user_check(); - if (thread_flags & _TIF_NEED_RESCHED) { /* Unmask Debug and SError for the next task */ local_daif_restore(DAIF_PROCCTX_NOIRQ); |