Displaying 20 results from an estimated 35 matches for "xen_irq_disable_direct".
2009 Jan 31
14
[PATCH 2/3] xen: make direct versions of irq_enable/disable/save/restore to common code
...b $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending
+ jz 1f
+
+2: call check_events
+1:
+ENDPATCH(xen_irq_enable_direct)
+ ret
+ ENDPROC(xen_irq_enable_direct)
+ RELOC(xen_irq_enable_direct, 2b+1)
+
+
+/*
+ Disabling events is simply a matter of making the event mask
+ non-zero.
+ */
+ENTRY(xen_irq_disable_direct)
+ movb $1, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask
+ENDPATCH(xen_irq_disable_direct)
+ ret
+ ENDPROC(xen_irq_disable_direct)
+ RELOC(xen_irq_disable_direct, 0)
+
+/*
+ (xen_)save_fl is used to get the current interrupt enable status.
+ Callers expect the status to be in X86_EFLAGS_IF, and...
2018 Aug 10
0
[PATCH 04/10] x86/paravirt: use a single ops structure
..._info_placement(void)
* percpu area for all cpus, so make use of it.
*/
if (xen_have_vcpu_info_placement) {
- pv_irq_ops.save_fl = __PV_IS_CALLEE_SAVE(xen_save_fl_direct);
- pv_irq_ops.restore_fl = __PV_IS_CALLEE_SAVE(xen_restore_fl_direct);
- pv_irq_ops.irq_disable = __PV_IS_CALLEE_SAVE(xen_irq_disable_direct);
- pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(xen_irq_enable_direct);
- pv_mmu_ops.read_cr2 = xen_read_cr2_direct;
+ pv_ops.pv_irq_ops.save_fl =
+ __PV_IS_CALLEE_SAVE(xen_save_fl_direct);
+ pv_ops.pv_irq_ops.restore_fl =
+ __PV_IS_CALLEE_SAVE(xen_restore_fl_direct);
+ pv_ops.pv_irq_ops.i...
2007 Jun 06
0
[PATCH UPDATE] xen: use iret directly where possible
...ov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -827,6 +827,7 @@ void __init xen_setup_vcpu_info_placemen
paravirt_ops.irq_disable = xen_irq_disable_direct;
paravirt_ops.irq_enable = xen_irq_enable_direct;
paravirt_ops.read_cr2 = xen_read_cr2_direct;
+ paravirt_ops.iret = xen_iret_direct;
}
}
===================================================================
--- a/arch/i386/xen/xen-asm.S
+++ b/arch/i386/xen/xen-asm.S
@@ -12,14 +12,20 @@...
2007 Jun 06
0
[PATCH UPDATE] xen: use iret directly where possible
...ov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -827,6 +827,7 @@ void __init xen_setup_vcpu_info_placemen
paravirt_ops.irq_disable = xen_irq_disable_direct;
paravirt_ops.irq_enable = xen_irq_enable_direct;
paravirt_ops.read_cr2 = xen_read_cr2_direct;
+ paravirt_ops.iret = xen_iret_direct;
}
}
===================================================================
--- a/arch/i386/xen/xen-asm.S
+++ b/arch/i386/xen/xen-asm.S
@@ -12,14 +12,20 @@...
2007 Jun 04
1
[PATCH] xen: use iret directly where possible
...ov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -827,6 +827,7 @@ void __init xen_setup_vcpu_info_placemen
paravirt_ops.irq_disable = xen_irq_disable_direct;
paravirt_ops.irq_enable = xen_irq_enable_direct;
paravirt_ops.read_cr2 = xen_read_cr2_direct;
+ paravirt_ops.iret = xen_iret_direct;
}
}
===================================================================
--- a/arch/i386/xen/xen-asm.S
+++ b/arch/i386/xen/xen-asm.S
@@ -12,14 +12,20 @@...
2007 Jun 04
1
[PATCH] xen: use iret directly where possible
...ov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -827,6 +827,7 @@ void __init xen_setup_vcpu_info_placemen
paravirt_ops.irq_disable = xen_irq_disable_direct;
paravirt_ops.irq_enable = xen_irq_enable_direct;
paravirt_ops.read_cr2 = xen_read_cr2_direct;
+ paravirt_ops.iret = xen_iret_direct;
}
}
===================================================================
--- a/arch/i386/xen/xen-asm.S
+++ b/arch/i386/xen/xen-asm.S
@@ -12,14 +12,20 @@...
2007 Jun 04
1
[PATCH] xen: use iret directly where possible
...ov %esp, %eax
call xen_evtchn_do_upcall
jmp ret_from_intr
CFI_ENDPROC
===================================================================
--- a/arch/i386/xen/enlighten.c
+++ b/arch/i386/xen/enlighten.c
@@ -827,6 +827,7 @@ void __init xen_setup_vcpu_info_placemen
paravirt_ops.irq_disable = xen_irq_disable_direct;
paravirt_ops.irq_enable = xen_irq_enable_direct;
paravirt_ops.read_cr2 = xen_read_cr2_direct;
+ paravirt_ops.iret = xen_iret_direct;
}
}
===================================================================
--- a/arch/i386/xen/xen-asm.S
+++ b/arch/i386/xen/xen-asm.S
@@ -12,14 +12,20 @@...
2007 Oct 09
2
[PATCH RFC REPOST 1/2] paravirt: refactor struct paravirt_ops into smaller pv_*_ops
.../*
@@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2007 Oct 09
2
[PATCH RFC REPOST 1/2] paravirt: refactor struct paravirt_ops into smaller pv_*_ops
.../*
@@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2007 Sep 28
2
[PATCH RFC] paravirt_ops: refactor struct paravirt_ops into smaller pv_*_ops
.../*
@@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2007 Sep 28
2
[PATCH RFC] paravirt_ops: refactor struct paravirt_ops into smaller pv_*_ops
.../*
@@ -832,12 +832,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2007 Jul 09
1
[PATCH RFC] first cut at splitting up paravirt_ops
.../*
@@ -842,12 +842,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2007 Jul 09
1
[PATCH RFC] first cut at splitting up paravirt_ops
.../*
@@ -842,12 +842,12 @@ void __init xen_setup_vcpu_info_placemen
if (have_vcpu_info_placement) {
printk(KERN_INFO "Xen: using vcpu_info placement\n");
- paravirt_ops.save_fl = xen_save_fl_direct;
- paravirt_ops.restore_fl = xen_restore_fl_direct;
- paravirt_ops.irq_disable = xen_irq_disable_direct;
- paravirt_ops.irq_enable = xen_irq_enable_direct;
- paravirt_ops.read_cr2 = xen_read_cr2_direct;
- paravirt_ops.iret = xen_iret_direct;
+ pv_irq_ops.save_fl = xen_save_fl_direct;
+ pv_irq_ops.restore_fl = xen_restore_fl_direct;
+ pv_irq_ops.irq_disable = xen_irq_disable_direct;
+ pv_irq_op...
2018 Aug 10
13
[PATCH 00/10] x86/paravirt: several cleanups
This series removes some no longer needed stuff from paravirt
infrastructure and puts large quantities of paravirt ops under a new
config option PARAVIRT_XXL which is selected by XEN_PV only.
A pvops kernel without XEN_PV being configured is about 2.5% smaller
with this series applied.
tip commit 5800dc5c19f34e6e03b5adab1282535cb102fafd ("x86/paravirt:
Fix spectre-v2 mitigations for
2018 Mar 13
32
[PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization
Changes:
- patch v2:
- Adapt patch to work post KPTI and compiler changes
- Redo all performance testing with latest configs and compilers
- Simplify mov macro on PIE (MOVABS now)
- Reduce GOT footprint
- patch v1:
- Simplify ftrace implementation.
- Use gcc mstack-protector-guard-reg=%gs with PIE when possible.
- rfc v3:
- Use --emit-relocs instead of -pie to reduce
2018 Mar 13
32
[PATCH v2 00/27] x86: PIE support and option to extend KASLR randomization
Changes:
- patch v2:
- Adapt patch to work post KPTI and compiler changes
- Redo all performance testing with latest configs and compilers
- Simplify mov macro on PIE (MOVABS now)
- Reduce GOT footprint
- patch v1:
- Simplify ftrace implementation.
- Use gcc mstack-protector-guard-reg=%gs with PIE when possible.
- rfc v3:
- Use --emit-relocs instead of -pie to reduce
2017 Oct 04
28
x86: PIE support and option to extend KASLR randomization
These patches make the changes necessary to build the kernel as Position
Independent Executable (PIE) on x86_64. A PIE kernel can be relocated below
the top 2G of the virtual address space. It allows to optionally extend the
KASLR randomization range from 1G to 3G.
Thanks a lot to Ard Biesheuvel & Kees Cook on their feedback on compiler
changes, PIE support and KASLR in general. Thanks to
2017 Oct 04
28
x86: PIE support and option to extend KASLR randomization
These patches make the changes necessary to build the kernel as Position
Independent Executable (PIE) on x86_64. A PIE kernel can be relocated below
the top 2G of the virtual address space. It allows to optionally extend the
KASLR randomization range from 1G to 3G.
Thanks a lot to Ard Biesheuvel & Kees Cook on their feedback on compiler
changes, PIE support and KASLR in general. Thanks to
2018 May 23
33
[PATCH v3 00/27] x86: PIE support and option to extend KASLR randomization
Changes:
- patch v3:
- Update on message to describe longer term PIE goal.
- Minor change on ftrace if condition.
- Changed code using xchgq.
- patch v2:
- Adapt patch to work post KPTI and compiler changes
- Redo all performance testing with latest configs and compilers
- Simplify mov macro on PIE (MOVABS now)
- Reduce GOT footprint
- patch v1:
- Simplify ftrace
2017 May 19
13
[PATCH 00/10] paravirt: make amount of paravirtualization configurable
Today paravirtualization is a all-or-nothing game: either a kernel is
compiled with no paravirtualization support at all, or it is supporting
paravirtualized environments like Xen pv-guests or lguest additionally
to some paravirtualized tuning for KVM, Hyperv, VMWare or Xen
HVM-guests.
As support of pv-guests requires quite intrusive pv-hooks (e.g. all
access functions to page table entries,