Displaying 7 results from an estimated 7 matches for "cfi_register".
2017 Oct 06
2
CFI directives for callee saved registers
Hello,
I've made changes to the prologue to not spill callee saved gprs to the
stack but rather spill them to unused vector registers. I'm not sure how
to handle this in the cfi directives. Originally, we would use cfi_offset
to give an offset of where it is saved on the stack. I tried to instead
use the cfi_restore directive. As the docs say ".cfi_restore says that the
rule
2007 Apr 18
0
[RFC/PATCH PV_OPS X86_64 12/17] paravirt_ops - interrupt/exception changes
...3,7 +130,7 @@ 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
@@ -141,7 +148,7 @@ sysenter_do_call:
CFI_REGISTER rip,rdx
TRACE_IRQS_ON
swapgs
- sti /* sti only takes effect after the next instruction */
+ ENABLE_INTERRUPTS(CLBR_NONE) /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
@@ -199,7 +206,7 @@ ENTRY(ia32_cstar_target)
* No need to follow this irqs on/...
2007 Apr 18
0
[RFC/PATCH PV_OPS X86_64 12/17] paravirt_ops - interrupt/exception changes
...3,7 +130,7 @@ 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
@@ -141,7 +148,7 @@ sysenter_do_call:
CFI_REGISTER rip,rdx
TRACE_IRQS_ON
swapgs
- sti /* sti only takes effect after the next instruction */
+ ENABLE_INTERRUPTS(CLBR_NONE) /* sti only takes effect after the next instruction */
/* sysexit */
.byte 0xf, 0x35
@@ -199,7 +206,7 @@ ENTRY(ia32_cstar_target)
* No need to follow this irqs on/...
2006 Jul 26
5
linux-2.6-xen.hg
Hi,
Is the http://xenbits.xensource.com/linux-2.6-xen.hg tree still being
updated? if not, what''s the preferred Linux tree to track that has all
of the Xen bits?
Thanks,
Muli
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
2007 Apr 18
0
[PATCH] paravirt_ops x86_64 , take 2
...-ARGOFFSET(%rsp)
movq %rcx,RIP-ARGOFFSET(%rsp)
@@ -245,7 +253,7 @@ ret_from_sys_call:
/* edi: flagmask */
sysret_check:
GET_THREAD_INFO(%rcx)
- cli
+ DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
movl threadinfo_flags(%rcx),%edx
andl %edi,%edx
@@ -261,7 +269,7 @@ sysret_check:
/*CFI_REGISTER rflags,r11*/
movq %gs:pda_oldrsp,%rsp
swapgs
- sysretq
+ SYSRETQ
CFI_RESTORE_STATE
/* Handle reschedules */
@@ -270,7 +278,7 @@ sysret_careful:
bt $TIF_NEED_RESCHED,%edx
jnc sysret_signal
TRACE_IRQS_ON
- sti
+ ENABLE_INTERRUPTS(CLBR_NONE)
pushq %rdi
CFI_ADJUST_CFA_OFFSET 8
cal...
2007 Apr 18
0
[PATCH] paravirt_ops x86_64 , take 2
...-ARGOFFSET(%rsp)
movq %rcx,RIP-ARGOFFSET(%rsp)
@@ -245,7 +253,7 @@ ret_from_sys_call:
/* edi: flagmask */
sysret_check:
GET_THREAD_INFO(%rcx)
- cli
+ DISABLE_INTERRUPTS(CLBR_NONE)
TRACE_IRQS_OFF
movl threadinfo_flags(%rcx),%edx
andl %edi,%edx
@@ -261,7 +269,7 @@ sysret_check:
/*CFI_REGISTER rflags,r11*/
movq %gs:pda_oldrsp,%rsp
swapgs
- sysretq
+ SYSRETQ
CFI_RESTORE_STATE
/* Handle reschedules */
@@ -270,7 +278,7 @@ sysret_careful:
bt $TIF_NEED_RESCHED,%edx
jnc sysret_signal
TRACE_IRQS_ON
- sti
+ ENABLE_INTERRUPTS(CLBR_NONE)
pushq %rdi
CFI_ADJUST_CFA_OFFSET 8
cal...
2007 Apr 18
33
[RFC PATCH 00/33] Xen i386 paravirtualization support
Unlike full virtualization in which the virtual machine provides
the same platform interface as running natively on the hardware,
paravirtualization requires modification to the guest operating system
to work with the platform interface provided by the hypervisor.
Xen was designed with performance in mind. Calls to the hypervisor
are minimized, batched if necessary, and non-critical codepaths