diff options
| author | Juergen Gross <jgross@suse.com> | 2017-08-31 20:42:49 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-08-31 22:35:10 +0300 |
| commit | 5878d5d6fdef6447d73b0acc121ba445bef37f53 (patch) | |
| tree | b4d36a16451274496a02a43adef75a68b84fdf6f /arch/x86/include/asm/proto.h | |
| parent | ef1d4deab953ecb1dfcf9f167043bda8b3f14a11 (diff) | |
| download | linux-5878d5d6fdef6447d73b0acc121ba445bef37f53.tar.xz | |
x86/xen: Get rid of paravirt op adjust_exception_frame
When running as Xen pv-guest the exception frame on the stack contains
%r11 and %rcx additional to the other data pushed by the processor.
Instead of having a paravirt op being called for each exception type
prepend the Xen specific code to each exception entry. When running as
Xen pv-guest just use the exception entry with prepended instructions,
otherwise use the entry without the Xen specific code.
[ tglx: Merged through tip to avoid ugly merge conflict ]
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: xen-devel@lists.xenproject.org
Cc: boris.ostrovsky@oracle.com
Cc: luto@amacapital.net
Link: http://lkml.kernel.org/r/20170831174249.26853-1-jg@pfupf.net
Diffstat (limited to 'arch/x86/include/asm/proto.h')
| -rw-r--r-- | arch/x86/include/asm/proto.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/proto.h b/arch/x86/include/asm/proto.h index 8d3964fc5f91..b408b1886195 100644 --- a/arch/x86/include/asm/proto.h +++ b/arch/x86/include/asm/proto.h @@ -24,6 +24,9 @@ void entry_SYSENTER_compat(void); void __end_entry_SYSENTER_compat(void); void entry_SYSCALL_compat(void); void entry_INT80_compat(void); +#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV) +void xen_entry_INT80_compat(void); +#endif #endif void x86_configure_nx(void); |