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authorJeremy Fitzhardinge <jeremy@goop.org>2008-04-02 10:54:11 -0700
committerIngo Molnar <mingo@elte.hu>2008-04-24 23:57:33 +0200
commitb77797fb2bf31bf076e6b69736119bc6a077525b (patch)
tree4d0bfcb5bcc96988ef421c807837d7236fdb0e07 /arch/x86/kernel/entry_32.S
parent2bd50036b5dfc929390ddc48be7f6314447b2be3 (diff)
xen: fold xen_sysexit into xen_iret
xen_sysexit and xen_iret were doing essentially the same thing. Rather than having a separate implementation for xen_sysexit, we can just strip the stack back to an iret frame and jump into xen_iret. This removes a lot of code and complexity - specifically, another critical region. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
-rw-r--r--arch/x86/kernel/entry_32.S9
1 files changed, 1 insertions, 8 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 209c334bb92..2a609dc3271 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -1044,15 +1044,8 @@ ENTRY(xen_hypervisor_callback)
jmp xen_iret_crit_fixup
-1: cmpl $xen_sysexit_start_crit,%eax
- jb 2f
- cmpl $xen_sysexit_end_crit,%eax
- jae 2f
-
- jmp xen_sysexit_crit_fixup
-
ENTRY(xen_do_upcall)
-2: mov %esp, %eax
+1: mov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC