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authorSven Schnelle <svens@linux.ibm.com>2022-05-04 09:23:50 +0300
committerHeiko Carstens <hca@linux.ibm.com>2022-05-09 12:33:38 +0300
commit6d97af487dee3176cb1342d4ab16637e495440ad (patch)
tree12caf1c8054ac1d75ffe9f8bbb61f2057768ec92 /arch/s390
parentfcdc03f78d5c8db53ba090e38474b05113d34ade (diff)
downloadlinux-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.h4
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,