x86, 64-bit: ia32entry: replace privileged instructions with pvops
Replace privileged instructions with the corresponding pvops in ia32entry.S. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.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>
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2be29982a0
Коммит
6680415481
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@ -98,14 +98,14 @@ ENTRY(ia32_sysenter_target)
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CFI_SIGNAL_FRAME
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CFI_DEF_CFA rsp,0
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CFI_REGISTER rsp,rbp
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swapgs
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SWAPGS
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movq %gs:pda_kernelstack, %rsp
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addq $(PDA_STACKOFFSET),%rsp
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/*
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* No need to follow this irqs on/off section: the syscall
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* disabled irqs, here we enable it straight after entry:
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*/
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sti
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ENABLE_INTERRUPTS(CLBR_NONE)
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movl %ebp,%ebp /* zero extension */
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pushq $__USER32_DS
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CFI_ADJUST_CFA_OFFSET 8
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@ -147,7 +147,7 @@ sysenter_do_call:
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call *ia32_sys_call_table(,%rax,8)
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movq %rax,RAX-ARGOFFSET(%rsp)
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GET_THREAD_INFO(%r10)
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cli
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DISABLE_INTERRUPTS(CLBR_NONE)
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TRACE_IRQS_OFF
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testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
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jnz int_ret_from_sys_call
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@ -210,7 +210,7 @@ ENTRY(ia32_cstar_target)
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CFI_DEF_CFA rsp,PDA_STACKOFFSET
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CFI_REGISTER rip,rcx
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/*CFI_REGISTER rflags,r11*/
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swapgs
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SWAPGS
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movl %esp,%r8d
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CFI_REGISTER rsp,r8
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movq %gs:pda_kernelstack,%rsp
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@ -218,7 +218,7 @@ ENTRY(ia32_cstar_target)
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* No need to follow this irqs on/off section: the syscall
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* disabled irqs and here we enable it straight after entry:
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*/
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sti
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ENABLE_INTERRUPTS(CLBR_NONE)
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SAVE_ARGS 8,1,1
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movl %eax,%eax /* zero extension */
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movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
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@ -251,7 +251,7 @@ cstar_do_call:
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call *ia32_sys_call_table(,%rax,8)
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movq %rax,RAX-ARGOFFSET(%rsp)
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GET_THREAD_INFO(%r10)
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cli
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DISABLE_INTERRUPTS(CLBR_NONE)
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TRACE_IRQS_OFF
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testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10)
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jnz int_ret_from_sys_call
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@ -319,12 +319,12 @@ ENTRY(ia32_syscall)
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/*CFI_REL_OFFSET rflags,EFLAGS-RIP*/
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/*CFI_REL_OFFSET cs,CS-RIP*/
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CFI_REL_OFFSET rip,RIP-RIP
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swapgs
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SWAPGS
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/*
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* No need to follow this irqs on/off section: the syscall
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* disabled irqs and here we enable it straight after entry:
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*/
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sti
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ENABLE_INTERRUPTS(CLBR_NONE)
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movl %eax,%eax
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pushq %rax
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CFI_ADJUST_CFA_OFFSET 8
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