X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fentry_32.S;h=c778e4fa55a2eacc79d34954c2fdcef1367d5732;hb=896395c290f902576270d84291c1f7f8bfbe339d;hp=f0f8934fc30324fc29af50dc436db6f14b198a93;hpb=03b883840c630c7b571690577809754739ac773f;p=linux-2.6-omap-h63xx.git

diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index f0f8934fc30..c778e4fa55a 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -248,6 +248,7 @@ ENTRY(resume_userspace)
  	DISABLE_INTERRUPTS(CLBR_ANY)	# make sure we don't miss an interrupt
 					# setting need_resched or sigpending
 					# between sampling and the iret
+	TRACE_IRQS_OFF
 	movl TI_flags(%ebp), %ecx
 	andl $_TIF_WORK_MASK, %ecx	# is there any work to be done on
 					# int/exception return?
@@ -409,7 +410,7 @@ restore_nocheck_notrace:
 irq_return:
 	INTERRUPT_RETURN
 .section .fixup,"ax"
-iret_exc:
+ENTRY(iret_exc)
 	pushl $0			# no error code
 	pushl $do_iret_error
 	jmp error_code
@@ -1017,6 +1018,13 @@ ENTRY(kernel_thread_helper)
 ENDPROC(kernel_thread_helper)
 
 #ifdef CONFIG_XEN
+/* Xen doesn't set %esp to be precisely what the normal sysenter
+   entrypoint expects, so fix it up before using the normal path. */
+ENTRY(xen_sysenter_target)
+	RING0_INT_FRAME
+	addl $5*4, %esp		/* remove xen-provided frame */
+	jmp sysenter_past_esp
+
 ENTRY(xen_hypervisor_callback)
 	CFI_STARTPROC
 	pushl $0
@@ -1035,8 +1043,9 @@ ENTRY(xen_hypervisor_callback)
 	cmpl $xen_iret_end_crit,%eax
 	jae  1f
 
-	call xen_iret_crit_fixup
+	jmp  xen_iret_crit_fixup
 
+ENTRY(xen_do_upcall)
 1:	mov %esp, %eax
 	call xen_evtchn_do_upcall
 	jmp  ret_from_intr