x86/entry: Fix some comments

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-and-tested-by: Borislav Petkov <bp@alien8.de>
Cc: <mark.gross@intel.com>
Cc: Su Tao <tao.su@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: <qiuxu.zhuo@intel.com>
Cc: <frank.wang@intel.com>
Cc: <borun.fu@intel.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Mingwei Shi <mingwei.shi@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 0870825a95685bfe916c2fc3523937444a21e948..fcad8ac30a8e776ee2f99285214d523262ef7751 100644 (file)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -292,7 +292,7 @@ ENTRY(entry_SYSENTER_32)
        movl    TSS_sysenter_sp0(%esp), %esp
 sysenter_past_esp:
        pushl   $__USER_DS              /* pt_regs->ss */
-       pushl   %ecx                    /* pt_regs->cx */
+       pushl   %ecx                    /* pt_regs->sp (stashed in cx) */
        pushfl                          /* pt_regs->flags (except IF = 0) */
        orl     $X86_EFLAGS_IF, (%esp)  /* Fix IF */
        pushl   $__USER_CS              /* pt_regs->cs */

diff --git a/arch/x86/entry/vdso/vdso32/system_call.S b/arch/x86/entry/vdso/vdso32/system_call.S
index 93bd8452383f8e355fcc5743a54947f46ef1a32e..8f42b1b9e8dfaef61d55ec19ded56522eb8ea455 100644 (file)
--- a/arch/x86/entry/vdso/vdso32/system_call.S
+++ b/arch/x86/entry/vdso/vdso32/system_call.S
@@ -1,5 +1,5 @@
 /*
- * Code for the vDSO.  This version uses the old int $0x80 method.
+ * AT_SYSINFO entry point
 */
 
 #include <asm/dwarf2.h>