diff options
| author |   Juergen Gross <jgross@suse.com> | 2017-08-31 19:42:49 +0200 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2017-08-31 21:35:10 +0200 |
| commit | 5878d5d6fdef6447d73b0acc121ba445bef37f53 (patch) | |
| tree | b4d36a16451274496a02a43adef75a68b84fdf6f /arch/x86/entry/entry_64_compat.S | |
| parent | x86/eisa: Add missing include (diff) | |
| download | linux-dev-5878d5d6fdef6447d73b0acc121ba445bef37f53.tar.xz linux-dev-5878d5d6fdef6447d73b0acc121ba445bef37f53.zip | |
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/entry/entry_64_compat.S')
| -rw-r--r-- | arch/x86/entry/entry_64_compat.S | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S index 5314d7b8e5ad..d8468ba24be0 100644 --- a/arch/x86/entry/entry_64_compat.S +++ b/arch/x86/entry/entry_64_compat.S @@ -293,7 +293,6 @@ ENTRY(entry_INT80_compat) /* * Interrupts are off on entry. */ - PARAVIRT_ADJUST_EXCEPTION_FRAME ASM_CLAC /* Do this early to minimize exposure */ SWAPGS |