Displaying 20 results from an estimated 193 matches for "safe_halt".
2007 Apr 18
1
paravirt_ops.safe_halt vs .halt?
What's paravirt_ops.halt for? Is it the non-safe equivalent to
safe_halt, or is it intended for shutting down the machine? It doesn't
seem to be used anywhere.
J
2007 Apr 18
1
paravirt_ops.safe_halt vs .halt?
What's paravirt_ops.halt for? Is it the non-safe equivalent to
safe_halt, or is it intended for shutting down the machine? It doesn't
seem to be used anywhere.
J
2007 Apr 18
0
[PATCH 1/9] Vmi timer fixes round two.patch
...isable_sep;
static int disable_tsc;
static int disable_mtrr;
+static int disable_noidle;
/* Cached VMI operations */
struct {
@@ -255,7 +256,6 @@ static void vmi_nop(void)
}
/* For NO_IDLE_HZ, we stop the clock when halting the kernel */
-#ifdef CONFIG_NO_IDLE_HZ
static fastcall void vmi_safe_halt(void)
{
int idle = vmi_stop_hz_timer();
@@ -266,7 +266,6 @@ static fastcall void vmi_safe_halt(void)
local_irq_enable();
}
}
-#endif
#ifdef CONFIG_DEBUG_PAGE_TYPE
@@ -742,12 +741,7 @@ static inline int __init activate_vmi(vo
(char *)paravirt_ops.save_fl);
patch_offset(&i...
2007 Apr 18
0
[PATCH 1/9] Vmi timer fixes round two.patch
...isable_sep;
static int disable_tsc;
static int disable_mtrr;
+static int disable_noidle;
/* Cached VMI operations */
struct {
@@ -255,7 +256,6 @@ static void vmi_nop(void)
}
/* For NO_IDLE_HZ, we stop the clock when halting the kernel */
-#ifdef CONFIG_NO_IDLE_HZ
static fastcall void vmi_safe_halt(void)
{
int idle = vmi_stop_hz_timer();
@@ -266,7 +266,6 @@ static fastcall void vmi_safe_halt(void)
local_irq_enable();
}
}
-#endif
#ifdef CONFIG_DEBUG_PAGE_TYPE
@@ -742,12 +741,7 @@ static inline int __init activate_vmi(vo
(char *)paravirt_ops.save_fl);
patch_offset(&i...
2020 Aug 11
3
[PATCH] x86/paravirt: Add missing noinstr to arch_local*() helpers
...ecause it doesn't call any other libraries that would result in corrupt
>
> Yes, this is definitely an issue.
>
> Tracing, we also musn't call into tracing when using raw_local_irq_*().
> Because then we re-intoduce this same issue all over again.
>
> Both halt() and safe_halt() are more paravirt calls, but given we're in
> a KVM paravirt call already, I suppose we can directly use native_*()
> here.
>
> Something like so then... I suppose, but then the Xen variants need TLC
> too.
Just to be sure I understand you correct:
You mean that xen_qlock_ki...
2020 Aug 11
3
[PATCH] x86/paravirt: Add missing noinstr to arch_local*() helpers
...ecause it doesn't call any other libraries that would result in corrupt
>
> Yes, this is definitely an issue.
>
> Tracing, we also musn't call into tracing when using raw_local_irq_*().
> Because then we re-intoduce this same issue all over again.
>
> Both halt() and safe_halt() are more paravirt calls, but given we're in
> a KVM paravirt call already, I suppose we can directly use native_*()
> here.
>
> Something like so then... I suppose, but then the Xen variants need TLC
> too.
Just to be sure I understand you correct:
You mean that xen_qlock_ki...
2007 Apr 18
0
[RFC/PATCH PV_OPS X86_64 16/17] paravirt_ops - touch ups
...ude/linux/irqflags.h
===================================================================
--- clean-start.orig/include/linux/irqflags.h
+++ clean-start/include/linux/irqflags.h
@@ -74,11 +74,11 @@
#endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */
#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
-static inline void safe_halt(void)
-{
- trace_hardirqs_on();
- raw_safe_halt();
-}
+#define safe_halt() \
+ do { \
+ trace_hardirqs_on(); \
+ raw_safe_halt(); \
+ } while (0)
#define local_save_flags(flags) raw_local_save_flags(flags)
--
2007 Apr 18
0
[RFC/PATCH PV_OPS X86_64 16/17] paravirt_ops - touch ups
...ude/linux/irqflags.h
===================================================================
--- clean-start.orig/include/linux/irqflags.h
+++ clean-start/include/linux/irqflags.h
@@ -74,11 +74,11 @@
#endif /* CONFIG_TRACE_IRQFLAGS_SUPPORT */
#ifdef CONFIG_TRACE_IRQFLAGS_SUPPORT
-static inline void safe_halt(void)
-{
- trace_hardirqs_on();
- raw_safe_halt();
-}
+#define safe_halt() \
+ do { \
+ trace_hardirqs_on(); \
+ raw_safe_halt(); \
+ } while (0)
#define local_save_flags(flags) raw_local_save_flags(flags)
--
2007 Apr 18
2
[RFC, PATCH 14/24] i386 Vmi reboot fixes
...d
BIOS reboot mechanism. Turns out that this is required by kexec, and a good
idea for native hardware. We simply insert the NOP VMI reboot hook before
calling the BIOS reboot. While here, fix SMP reboot issues as well. The
problem is the halt() macro in VMI has been defined to be equivalent to
safe_halt(), which enables interrupts. Several call sites actually want to
disable interrupts and shutdown the processor, which is what VMI_Shutdown()
does.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Index: linux-2.6.16-rc5/arch/i386/kernel/crash.c
==============================================...
2007 Apr 18
2
[RFC, PATCH 14/24] i386 Vmi reboot fixes
...d
BIOS reboot mechanism. Turns out that this is required by kexec, and a good
idea for native hardware. We simply insert the NOP VMI reboot hook before
calling the BIOS reboot. While here, fix SMP reboot issues as well. The
problem is the halt() macro in VMI has been defined to be equivalent to
safe_halt(), which enables interrupts. Several call sites actually want to
disable interrupts and shutdown the processor, which is what VMI_Shutdown()
does.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Index: linux-2.6.16-rc5/arch/i386/kernel/crash.c
==============================================...
2007 Jul 09
1
[PATCH RFC] first cut at splitting up paravirt_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Jul 09
1
[PATCH RFC] first cut at splitting up paravirt_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Apr 18
0
[PATCH 8/9] Vmi apic ops.diff
...le_noidle)
+
+ /* We have true wallclock functions; disable CMOS clock sync */
+ no_sync_cmos_clock = 1;
+ } else {
+ disable_noidle = 1;
+ disable_vmi_timer = 1;
+ }
+
+ /* No idle HZ mode only works if VMI timer and no idle is enabled */
+ if (disable_noidle || disable_vmi_timer)
para_fill(safe_halt, Halt);
- else {
- vmi_ops.halt = vmi_get_function(VMI_CALL_Halt);
- paravirt_ops.safe_halt = vmi_safe_halt;
- }
+ else
+ para_wrap(safe_halt, vmi_safe_halt, halt, Halt);
/*
* Alternative instruction rewriting doesn't happen soon enough
@@ -933,10 +949,9 @@ void __init vmi_init(void)...
2007 Sep 28
2
[PATCH RFC] paravirt_ops: refactor struct paravirt_ops into smaller pv_*_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Sep 28
2
[PATCH RFC] paravirt_ops: refactor struct paravirt_ops into smaller pv_*_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Apr 18
0
[PATCH 8/9] Vmi apic ops.diff
...le_noidle)
+
+ /* We have true wallclock functions; disable CMOS clock sync */
+ no_sync_cmos_clock = 1;
+ } else {
+ disable_noidle = 1;
+ disable_vmi_timer = 1;
+ }
+
+ /* No idle HZ mode only works if VMI timer and no idle is enabled */
+ if (disable_noidle || disable_vmi_timer)
para_fill(safe_halt, Halt);
- else {
- vmi_ops.halt = vmi_get_function(VMI_CALL_Halt);
- paravirt_ops.safe_halt = vmi_safe_halt;
- }
+ else
+ para_wrap(safe_halt, vmi_safe_halt, halt, Halt);
/*
* Alternative instruction rewriting doesn't happen soon enough
@@ -933,10 +949,9 @@ void __init vmi_init(void)...
2007 Oct 09
2
[PATCH RFC REPOST 1/2] paravirt: refactor struct paravirt_ops into smaller pv_*_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Oct 09
2
[PATCH RFC REPOST 1/2] paravirt: refactor struct paravirt_ops into smaller pv_*_ops
...cr3 = native_read_cr3,
- .write_cr3 = native_write_cr3,
- .read_cr4 = native_read_cr4,
- .read_cr4_safe = native_read_cr4_safe,
- .write_cr4 = native_write_cr4,
- .save_fl = native_save_fl,
- .restore_fl = native_restore_fl,
- .irq_disable = native_irq_disable,
- .irq_enable = native_irq_enable,
- .safe_halt = native_safe_halt,
- .halt = native_halt,
- .wbinvd = native_wbinvd,
- .read_msr = native_read_msr_safe,
- .write_msr = native_write_msr_safe,
- .read_tsc = native_read_tsc,
- .read_pmc = native_read_pmc,
- .sched_clock = native_sched_clock,
- .get_cpu_khz = native_calculate_cpu_khz,
- .load_tr_de...
2007 Apr 18
0
[RFC, PATCH 13/24] i386 Vmi system header
...", "cc"); } while (0)
-#define local_irq_disable() __asm__ __volatile__("cli": : :"memory")
-#define local_irq_enable() __asm__ __volatile__("sti": : :"memory")
-/* used in the idle loop; sti takes one instruction cycle to complete */
-#define safe_halt() __asm__ __volatile__("sti; hlt": : :"memory")
-/* used when interrupts are already enabled or to shutdown the processor */
-#define halt() __asm__ __volatile__("hlt": : :"memory")
-
+#define local_irq_save(x) do { typecheck(unsigned long,x); local_save_f...
2007 Apr 18
0
[RFC, PATCH 13/24] i386 Vmi system header
...", "cc"); } while (0)
-#define local_irq_disable() __asm__ __volatile__("cli": : :"memory")
-#define local_irq_enable() __asm__ __volatile__("sti": : :"memory")
-/* used in the idle loop; sti takes one instruction cycle to complete */
-#define safe_halt() __asm__ __volatile__("sti; hlt": : :"memory")
-/* used when interrupts are already enabled or to shutdown the processor */
-#define halt() __asm__ __volatile__("hlt": : :"memory")
-
+#define local_irq_save(x) do { typecheck(unsigned long,x); local_save_f...