[PATCH 7/8] x86/entry: Add do_SYSENTER_32() prototype

[Yuxuan Luo]

From: Arnd Bergmann <arnd at arndb.de>

The 32-bit system call entry points can be called on both 32-bit
and 64-bit kernels, but on the former the declarations are hidden:

arch/x86/entry/common.c:238:24: error: no previous prototype for 'do_SYSENTER_32' [-Werror=missing-prototypes]

Move them all out of the #ifdef block to avoid the warnings.

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Dave Hansen <dave.hansen at linux.intel.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin at intel.com>
Link: https://lore.kernel.org/all/20230516193549.544673-12-arnd%40kernel.org
(cherry picked from commit f34f0d3c10eb4d3160fc6fe7a2482cb78d3b0c12)
CVE-2024-25744
Signed-off-by: Yuxuan Luo <yuxuan.luo at canonical.com>
---
 arch/x86/include/asm/syscall.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/syscall.h b/arch/x86/include/asm/syscall.h
index 825528bf0daf5..e873e95ff6bfc 100644
--- a/arch/x86/include/asm/syscall.h
+++ b/arch/x86/include/asm/syscall.h
@@ -158,9 +158,11 @@ static inline int syscall_get_arch(struct task_struct *task)
 }
 
 void do_syscall_64(struct pt_regs *regs, int nr);
-void do_int80_syscall_32(struct pt_regs *regs);
-long do_fast_syscall_32(struct pt_regs *regs);
 
 #endif	/* CONFIG_X86_32 */
 
+void do_int80_syscall_32(struct pt_regs *regs);
+long do_fast_syscall_32(struct pt_regs *regs);
+long do_SYSENTER_32(struct pt_regs *regs);
+
 #endif	/* _ASM_X86_SYSCALL_H */
-- 
2.34.1