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authorJeremy Fitzhardinge <jeremy@goop.org>2008-06-25 00:19:27 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-08 13:13:37 +0200
commitc7245da6ae7e5208504ff027c4e0eec69b788651 (patch)
tree47767af25940999d36f4682dd3e0820c1580092a /include/asm-x86/paravirt.h
parentd75cd22fdd5f7d203fb60014d426942df33dd9a6 (diff)
x86/paravirt, 64-bit: don't restore user rsp within sysret
There's no need to combine restoring the user rsp within the sysret pvop, so split it out. This makes the pvop's semantics closer to the machine instruction. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citirx.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/paravirt.h')
-rw-r--r--include/asm-x86/paravirt.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 2668903b70f..dad5b4186f5 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -143,7 +143,7 @@ struct pv_cpu_ops {
/* These three are jmp to, not actually called. */
void (*irq_enable_sysexit)(void);
- void (*usersp_sysret)(void);
+ void (*usergs_sysret)(void);
void (*iret)(void);
void (*swapgs)(void);
@@ -1505,10 +1505,10 @@ static inline unsigned long __raw_local_irq_save(void)
movq %rax, %rcx; \
xorq %rax, %rax;
-#define USERSP_SYSRET \
- PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usersp_sysret), \
+#define USERGS_SYSRET \
+ PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret), \
CLBR_NONE, \
- jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usersp_sysret))
+ jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret))
#endif
#endif /* __ASSEMBLY__ */