Displaying 2 results from an estimated 2 matches for "vcpu_trap_bounc".
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vcpu_trap_bounce
2012 Jul 26
2
[PATCH] x86-64: drop updating of UREGS_rip when converting sysenter to #GP
...P_syscall,4(%rsp)
SAVE_ALL
GET_CURRENT(%rbx)
cmpb $0,VCPU_sysenter_disables_events(%rbx)
- 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
@@ -292,7 +290,6 @@ sysenter_eflags_saved:
UNLIKELY_START(z, sysenter_gpf)
movq VCPU_trap_ctxt(%rbx),%rsi
movl $TRAP_gp_fault,UREGS_entry_vector(%rsp)
- subq $2,UREGS_rip(%rsp)
movl %eax,TRAPBOUNCE_error_code(%rdx)
movq TRAP_gp_fault * TR...
2007 Aug 08
2
[PATCH] x86-64: syscall/sysenter support for 32-bit apps
...dle_exception)
movb $0,TRAPBOUNCE_flags(%rdx)
jmp compat_test_all_events
+ENTRY(compat_syscall)
+ cmpb $0,VCPU_syscall32_disables_events(%rbx)
+ movzwl VCPU_syscall32_sel(%rbx),%esi
+ movq VCPU_syscall32_addr(%rbx),%rax
+ setne %cl
+ leaq VCPU_trap_bounce(%rbx),%rdx
+ testl $~3,%esi
+ leal (,%rcx,TBF_INTERRUPT),%ecx
+ jz 2f
+1: movq %rax,TRAPBOUNCE_eip(%rdx)
+ movw %si,TRAPBOUNCE_cs(%rdx)
+ movb %cl,TRAPBOUNCE_flags(%rdx)
+ call compat_create_bounce_frame
+ jmp compat_test_all_events
+...