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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-25 00:19:29 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-07-08 13:15:55 +0200 |
| commit | 6680415481c7bd38967cf7488787f509f17ba307 (patch) | |
| tree | ddbabcbbba8e126c2262203d55e7c0d4c288125e /arch/x86/ia32 | |
| parent | x86/paravirt: add sysret/sysexit pvops for returning to 32-bit compatibility userspace (diff) | |
| download | linux-dev-6680415481c7bd38967cf7488787f509f17ba307.tar.xz linux-dev-6680415481c7bd38967cf7488787f509f17ba307.zip | |
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>
Diffstat (limited to 'arch/x86/ia32')
| -rw-r--r-- | arch/x86/ia32/ia32entry.S | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S index 2a4c42427d9a..9740b6a2df35 100644 --- a/arch/x86/ia32/ia32entry.S +++ b/arch/x86/ia32/ia32entry.S @@ -98,14 +98,14 @@ ENTRY(ia32_sysenter_target) CFI_SIGNAL_FRAME CFI_DEF_CFA rsp,0 CFI_REGISTER rsp,rbp - swapgs + SWAPGS movq %gs:pda_kernelstack, %rsp addq $(PDA_STACKOFFSET),%rsp /* * No need to follow this irqs on/off section: the syscall * disabled irqs, here we enable it straight after entry: */ - sti + ENABLE_INTERRUPTS(CLBR_NONE) movl %ebp,%ebp /* zero extension */ pushq $__USER32_DS CFI_ADJUST_CFA_OFFSET 8 @@ -147,7 +147,7 @@ sysenter_do_call: call *ia32_sys_call_table(,%rax,8) movq %rax,RAX-ARGOFFSET(%rsp) GET_THREAD_INFO(%r10) - cli + DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) jnz int_ret_from_sys_call @@ -210,7 +210,7 @@ ENTRY(ia32_cstar_target) CFI_DEF_CFA rsp,PDA_STACKOFFSET CFI_REGISTER rip,rcx /*CFI_REGISTER rflags,r11*/ - swapgs + SWAPGS movl %esp,%r8d CFI_REGISTER rsp,r8 movq %gs:pda_kernelstack,%rsp @@ -218,7 +218,7 @@ ENTRY(ia32_cstar_target) * No need to follow this irqs on/off section: the syscall * disabled irqs and here we enable it straight after entry: */ - sti + ENABLE_INTERRUPTS(CLBR_NONE) SAVE_ARGS 8,1,1 movl %eax,%eax /* zero extension */ movq %rax,ORIG_RAX-ARGOFFSET(%rsp) @@ -251,7 +251,7 @@ cstar_do_call: call *ia32_sys_call_table(,%rax,8) movq %rax,RAX-ARGOFFSET(%rsp) GET_THREAD_INFO(%r10) - cli + DISABLE_INTERRUPTS(CLBR_NONE) TRACE_IRQS_OFF testl $_TIF_ALLWORK_MASK,threadinfo_flags(%r10) jnz int_ret_from_sys_call @@ -319,12 +319,12 @@ ENTRY(ia32_syscall) /*CFI_REL_OFFSET rflags,EFLAGS-RIP*/ /*CFI_REL_OFFSET cs,CS-RIP*/ CFI_REL_OFFSET rip,RIP-RIP - swapgs + SWAPGS /* * No need to follow this irqs on/off section: the syscall * disabled irqs and here we enable it straight after entry: */ - sti + ENABLE_INTERRUPTS(CLBR_NONE) movl %eax,%eax pushq %rax CFI_ADJUST_CFA_OFFSET 8 |