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| author | Sven Schnelle <svens@linux.ibm.com> | 2022-05-04 09:23:50 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2022-05-09 12:33:38 +0300 |
| commit | 6d97af487dee3176cb1342d4ab16637e495440ad (patch) | |
| tree | 12caf1c8054ac1d75ffe9f8bbb61f2057768ec92 /arch/s390 | |
| parent | fcdc03f78d5c8db53ba090e38474b05113d34ade (diff) | |
| download | linux-6d97af487dee3176cb1342d4ab16637e495440ad.tar.xz | |
entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
arch_check_user_regs() is used at the moment to verify that struct pt_regs
contains valid values when entering the kernel from userspace. s390 needs
a place in the generic entry code to modify a cpu data structure when
switching from userspace to kernel mode. As arch_check_user_regs() is
exactly this, rename it to arch_enter_from_user_mode().
When entering the kernel from userspace, arch_check_user_regs() is
used to verify that struct pt_regs contains valid values. Note that
the NMI codepath doesn't call this function. s390 needs a place in the
generic entry code to modify a cpu data structure when switching from
userspace to kernel mode. As arch_check_user_regs() is exactly this,
rename it to arch_enter_from_user_mode().
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lore.kernel.org/r/20220504062351.2954280-2-tmricht@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/entry-common.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/include/asm/entry-common.h b/arch/s390/include/asm/entry-common.h index 2f0a1cacdf85..99d654ccd3db 100644 --- a/arch/s390/include/asm/entry-common.h +++ b/arch/s390/include/asm/entry-common.h @@ -15,12 +15,12 @@ void do_per_trap(struct pt_regs *regs); #ifdef CONFIG_DEBUG_ENTRY -static __always_inline void arch_check_user_regs(struct pt_regs *regs) +static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs) { debug_user_asce(0); } -#define arch_check_user_regs arch_check_user_regs +#define arch_enter_from_user_mode arch_enter_from_user_mode #endif /* CONFIG_DEBUG_ENTRY */ static __always_inline void arch_exit_to_user_mode_work(struct pt_regs *regs, |