diff options
| author | Keir Fraser <keir@xensource.com> | 2007-10-24 17:15:54 +0100 |
|---|---|---|
| committer | Keir Fraser <keir@xensource.com> | 2007-10-24 17:15:54 +0100 |
| commit | f0baaccd758bdc9c4c2d108ae0c2d64d380abc95 (patch) | |
| tree | 40bba5976bce57b4c05d098fa7da43c9133564a2 /xen/arch/x86/x86_64/entry.S | |
| parent | cd75d47348b45ff62e6234b993c1880de8277a06 (diff) | |
| download | xen-f0baaccd758bdc9c4c2d108ae0c2d64d380abc95.tar.gz xen-f0baaccd758bdc9c4c2d108ae0c2d64d380abc95.tar.bz2 xen-f0baaccd758bdc9c4c2d108ae0c2d64d380abc95.zip | |
x86: Remove CALLBACKTYPE_sysexit.
Looking at the Linux patch as an example, it adds more code and
complexity than it removes, for no obvious performance benefit.
Signed-off-by: Keir Fraser <keir@xensource.com>
Diffstat (limited to 'xen/arch/x86/x86_64/entry.S')
| -rw-r--r-- | xen/arch/x86/x86_64/entry.S | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/xen/arch/x86/x86_64/entry.S b/xen/arch/x86/x86_64/entry.S index 39feb5fd9a..34c9c2a923 100644 --- a/xen/arch/x86/x86_64/entry.S +++ b/xen/arch/x86/x86_64/entry.S @@ -264,11 +264,9 @@ sysenter_eflags_saved: movl $TRAP_syscall,4(%rsp) SAVE_ALL GET_CURRENT(%rbx) - movq VCPU_sysexit_addr(%rbx),%rax - movzwl VCPU_sysexit_sel(%rbx),%edx cmpb $0,VCPU_sysenter_disables_events(%rbx) - movq %rax,UREGS_rip(%rsp) - movl %edx,UREGS_cs(%rsp) + movq $0,UREGS_rip(%rsp) /* null rip */ + movl $3,UREGS_cs(%rsp) /* ring 3 null cs */ movq VCPU_sysenter_addr(%rbx),%rax setne %cl leaq VCPU_trap_bounce(%rbx),%rdx |