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x86/entry: Drop asmlinkage from syscalls

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asmlinkage is no longer required since the syscall ABI is now fully under
x86 architecture control.  This makes the 32-bit native syscalls a bit more
effecient by passing in regs via EAX instead of on the stack.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20200313195144.164260-18-brgerst@gmail.com
This commit is contained in:
Brian Gerst
2020-03-13 15:51:43 -04:00
committed by Thomas Gleixner
parent 25c619e59b
commit 0f78ff1711
5 changed files with 19 additions and 22 deletions
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2
arch/x86/include/asm/syscall.h
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@@ -16,7 +16,7 @@
#include <asm/thread_info.h> /* for TS_COMPAT */
#include <asm/unistd.h>
typedef asmlinkage long (*sys_call_ptr_t)(const struct pt_regs *);
typedef long (*sys_call_ptr_t)(const struct pt_regs *);
extern const sys_call_ptr_t sys_call_table[];
#if defined(CONFIG_X86_32)