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| author | Helge Deller <deller@gmx.de> | 2024-07-21 23:36:36 +0200 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2024-07-24 02:04:05 +0200 |
| commit | cbade823342cd013f1fbd46f6e3b74825fecbc16 (patch) | |
| tree | e020587db1ce6124a4389c9df94fd57ce25a63dc /arch/parisc | |
| parent | parisc: Use max() to calculate parisc_tlb_flush_threshold (diff) | |
| download | linux-cbade823342cd013f1fbd46f6e3b74825fecbc16.tar.xz linux-cbade823342cd013f1fbd46f6e3b74825fecbc16.zip | |
parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
Allow users to disable kernel warnings for unaligned memory
accesses from kernel via the /proc/sys/kernel/ignore-unaligned-usertrap
procfs entry.
That way users can disable those warnings in case they happen too
often.
Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/parisc/kernel/unaligned.c | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 50735f3a772c..d815af5f1aeb 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -45,6 +45,7 @@ config PARISC select GENERIC_CPU_DEVICES if !SMP select GENERIC_LIB_DEVMEM_IS_ALLOWED select SYSCTL_ARCH_UNALIGN_ALLOW + select SYSCTL_ARCH_UNALIGN_NO_WARN select SYSCTL_EXCEPTION_TRACE select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA diff --git a/arch/parisc/kernel/unaligned.c b/arch/parisc/kernel/unaligned.c index 71e596ca5a86..3e79e40e361d 100644 --- a/arch/parisc/kernel/unaligned.c +++ b/arch/parisc/kernel/unaligned.c @@ -104,6 +104,7 @@ #define ERR_NOTHANDLED -1 int unaligned_enabled __read_mostly = 1; +int no_unaligned_warning __read_mostly; static int emulate_ldh(struct pt_regs *regs, int toreg) { @@ -399,6 +400,7 @@ void handle_unaligned(struct pt_regs *regs) } else { static DEFINE_RATELIMIT_STATE(kernel_ratelimit, 5 * HZ, 5); if (!(current->thread.flags & PARISC_UAC_NOPRINT) && + !no_unaligned_warning && __ratelimit(&kernel_ratelimit)) pr_warn("Kernel: unaligned access to " RFMT " in %pS " "(iir " RFMT ")\n", |