proof
of concept.
Jacob Pan (3):
tick: export nohz tick idle symbols for module use
x86/nmi: export local_touch_nmi() symbol for modules
PM: Introduce Intel PowerClamp Driver
Documentation/thermal/intel_powerclamp.txt | 307 +++
arch/x86/kernel/nmi.c |1
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index a402608..7c38f08 100644
--- a
idea and driver, I have been
refining driver in hope that they can be to be useful beyond a proof
of concept.
Jacob Pan (3):
tick: export nohz tick idle symbols for module use
x86/nmi: export local_touch_nmi() symbol for modules
PM: Introduce Intel PowerClamp Driver
Documentation/thermal
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index a402608..7c38f08 100644
--- a
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
On Mon, 26 Nov 2012 15:27:25 -0800
Joe Perches wrote:
> On Mon, 2012-11-26 at 06:37 -0800, Jacob Pan wrote:
> > Intel PowerClamp driver performs synchronized idle injection across
> > all online CPUs. The goal is to maintain a given package level
> > C-state rati
RAPL power limit could result in silent failure. I
don't have a good solution for that.
4. Data polling starts only when the following items are set
- power limit
- events
Jacob Pan (1):
Introduce Intel RAPL cooling device driver
drivers/platform/x86/Kconfig |8 +
org/lkml/2011/5/26/93
Unlike the patch above, which is mainly for monitoring, this driver
focus on the control and usability by user applications.
Signed-off-by: Jacob Pan
---
drivers/platform/x86/Kconfig |8 +
drivers/platform/x86/Makefile |1 +
drivers/platform/x86/inte
On Tue, 2 Apr 2013 16:00:42 -0700
Greg KH wrote:
> > +#include "intel_rapl.h"
> > +#include "../../../fs/sysfs/sysfs.h"
>
> WTF?
>
> Oh, that's a sure sign you are not doing something properly, if you
> think it's ok to muck around with the internals of sysfs.
>
> There's a reason that file
On Tue, 2 Apr 2013 16:00:42 -0700
Greg KH wrote:
> And, one final complaint, never use "raw" kobjects, for loads of good
> reasons, not the least being you just prevented userspace from seeing
> what is happening with your devices. Use the driver model, that's
> what it is there for, if you need
On Tue, 2 Apr 2013 16:48:05 -0700
Greg KH wrote:
> On Tue, Apr 02, 2013 at 04:33:57PM -0700, Jacob Pan wrote:
> > On Tue, 2 Apr 2013 16:00:42 -0700
> > Greg KH wrote:
> >
> > > > +#include "intel_rapl.h"
> > > > +#include "../../../f
On Tue, 2 Apr 2013 17:13:00 -0700
Greg KH wrote:
> On Tue, Apr 02, 2013 at 04:53:40PM -0700, Jacob Pan wrote:
> > On Tue, 2 Apr 2013 16:00:42 -0700
> > Greg KH wrote:
> >
> > > And, one final complaint, never use "raw" kobjects, for loads of
> >
On Wed, 3 Apr 2013 09:35:09 -0700
Greg KH wrote:
> On Tue, Apr 02, 2013 at 09:48:18PM -0700, Jacob Pan wrote:
> > > Let's step back and start over, what exactly are you trying to
> > > tell userspace? What data do you have that you need to express
> > > to it
On Wed, 3 Apr 2013 09:30:52 -0700
Greg KH wrote:
> On Tue, Apr 02, 2013 at 05:17:14PM -0700, Jacob Pan wrote:
> > On Tue, 2 Apr 2013 16:48:05 -0700
> > Greg KH wrote:
> >
> > > On Tue, Apr 02, 2013 at 04:33:57PM -0700, Jacob Pan wrote:
> > > > On Tue,
since it is not as simple as
deleting the advanced interfaces, I would have to do some setup based
on best guesses.
Jacob Pan (1):
Introduce Intel RAPL cooling device driver
Documentation/ABI/testing/sysfs-class-intel-rapl | 121 ++
drivers/platform/x86/Kconfig |9 +
d
l.org/lkml/2011/5/26/93
Unlike the patch above, which is mainly for monitoring, this driver
focus on the control and usability by user applications.
Signed-off-by: Jacob Pan
---
Documentation/ABI/testing/sysfs-class-intel-rapl | 121 ++
drivers/platform/x86/Kconfig |
On Fri, 5 Apr 2013 13:23:09 -0700
Greg KH wrote:
> On Wed, Apr 03, 2013 at 10:35:51AM -0700, Jacob Pan wrote:
> > On Wed, 3 Apr 2013 09:35:09 -0700
> > Greg KH wrote:
> >
> > > On Tue, Apr 02, 2013 at 09:48:18PM -0700, Jacob Pan wrote:
> > > > > Let
On Fri, 05 Apr 2013 14:26:35 -0700
Joe Perches wrote:
> > +/* in the order of enum rapl_primitives */
> > +static struct rapl_primitive_info rpi[] = {
>
> const?
I do need to override one entry for a special case. The hardware uses a
different bit location for the same lock functionality.
The
On Mon, 25 Feb 2013 23:50:23 +0100
Daniel Lezcano wrote:
> Do you mean a cpumask static variable ? and something like:
>
> if (!cpumask_test_cpu(cpu, &affinitymask)) {
> cpumask_set_cpu(cpu, &affinitymask);
> irq_set_affinity(bc->irq, &affinitymask)
> }
yeah. but i think you can use
On Thu, 21 Feb 2013 23:01:23 +0100
Daniel Lezcano wrote:
> +/*
> + * Set broadcast interrupt affinity
> + */
> +static void tick_broadcast_set_affinity(struct clock_event_device
> *bc, int cpu) +{
> + struct cpumask cpumask;
> +
> + if (!(bc->features & CLOCK_EVT_FEAT_DYNIRQ))
> +
On Fri, 04 Oct 2013 11:07:45 -0700
Joe Perches wrote:
> On Fri, 2013-10-04 at 09:36 -0700, Srinivas Pandruvada wrote:
> > The Intel Running Average Power Limit(RAPL) technology provides
> > platform software with the ability to monitor, control, and get
> > notifications on power usage.
> []
> >
On Fri, 04 Oct 2013 15:14:22 -0700
Joe Perches wrote:
> Isn't LIMIT1/WINDOW1 used as ull anyway?
> It doesn't hurt to show that the value is also ull.
sure, I will make that change in the next set.
thanks,
Jacob
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the b
This will enable intel_powerclamp driver on newer Intel CPUs
including some Ivy Bridge and Haswell processors.
Signed-off-by: Jacob Pan
---
drivers/thermal/intel_powerclamp.c |5 +
1 file changed, 5 insertions(+)
diff --git a/drivers/thermal/intel_powerclamp.c
b/drivers/thermal
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index a402608..7c38f08 100644
--- a
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
, calibration, scalability, and user
interface. Please refer to the following file for more details.
Documentation/thermal/intel_powerclamp.txt
Arjan van de Ven created the original idea and driver, I have been
refining driver in hope that they can be to be useful beyond a proof
of concept.
Jacob
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
On Mon, 12 Nov 2012 22:33:36 -0800
Joe Perches wrote:
> > Intel PowerClamp driver performs synchronized idle injection across
> > all online CPUs. The goal is to maintain a given package level
> > C-state ratio.
>
> style trivia:
they are all good catches. will fix in the next version.
--
Th
confused?
>
could you explain the part that is partially powerclamped?
> Thanx, Paul
[Jacob Pan]
--
Thanks,
Jacob
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.
On Tue, 13 Nov 2012 16:08:54 -0800
Arjan van de Ven wrote:
> > I think I know, but I feel the need to ask anyway. Why not tell
> > RCU about the clamping?
>
> I don't mind telling RCU, but what cannot happen is a bunch of CPU
> time suddenly getting used (since that is the opposite of what is
On Tue, 13 Nov 2012 16:03:00 -0800
"Paul E. McKenney" wrote:
> Just to make sure I am really understanding what is happening, let's
> suppose we have a HZ=1000 system that has a few tasks that
> occasionally run at prio 99. These tasks would run during the clamp
> interval, but would (for exampl
refining driver in hope that they can be to be useful beyond a proof
of concept.
Jacob Pan (3):
tick: export nohz tick idle symbols for module use
x86/nmi: export local_touch_nmi() symbol for modules
PM: Introduce Intel PowerClamp Driver
Documentation/thermal/intel_powerclamp.txt | 307
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index d58e552..a767757 100644
--- a
On Thu, 03 Jan 2013 11:34:14 -0800
Joe Perches wrote:
> On Thu, 2013-01-03 at 03:01 -0800, Jacob Pan wrote:
> > Intel PowerClamp driver performs synchronized idle injection across
> > all online CPUs. The goal is to maintain a given package level
> > C-state ratio.
>
&g
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index d58e552..a767757 100644
--- a
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
/intel_powerclamp.txt
Arjan van de Ven created the original idea and driver, I have been
refining driver in hope that they can be to be useful beyond a proof
of concept.
Jacob Pan (3):
tick: export nohz tick idle symbols for module use
x86/nmi: export local_touch_nmi() symbol for modules
PM: Introduce
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
On Thu, 03 Jan 2013 19:51:04 -0800
Joe Perches wrote:
> On Thu, 2013-01-03 at 07:10 -0800, Jacob Pan wrote:
> > Intel PowerClamp driver performs synchronized idle injection across
> > all online CPUs. The goal is to maintain a given package level
> > C-state ratio.
>
Signed-off-by: Jacob Pan
---
arch/x86/kernel/nmi.c |1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index f84f5c5..6030805 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -509,3 +509,4 @@ void local_touch_nmi(void
Allow drivers such as intel_powerclamp to use these apis for
turning on/off ticks during idle.
Signed-off-by: Jacob Pan
---
kernel/time/tick-sched.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index d58e552..a767757 100644
--- a
original idea and driver, I have been
refining driver in hope that they can be to be useful beyond a proof
of concept.
Jacob Pan (3):
tick: export nohz tick idle symbols for module use
x86/nmi: export local_touch_nmi() symbol for modules
PM: Introduce Intel PowerClamp Driver
Documentation
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
Having 64-bit MSR access methods on given CPU can avoid shifting and
simplify MSR content manipulation. We already have other combinations
of rdmsrl_xxx and wrmsrl_xxx but missing the _on_cpu version.
Signed-off-by: Jacob Pan
---
arch/x86/include/asm/msr.h | 22
arch/x86/lib
On Thu, 01 Aug 2013 12:31:07 -0700
"H. Peter Anvin" wrote:
> The patch is fine but please use it asa preface to a patch series
> that actually used these interfaces.
will do.
It will be used for upcoming Intel RAPL driver. I was hoping to avoid
time consuming rebuild of the entire kernel when the
ndencies on X86
- misc cleanups
Jacob Pan (1):
Introduce Intel RAPL cooling device driver
drivers/platform/x86/Kconfig |9 +
drivers/platform/x86/Makefile |1 +
drivers/platform/x86/intel_rapl.c | 764 +
drivers/platform/x86/inte
ch is mainly for monitoring, this driver
focus on the control and usability by user applications.
Signed-off-by: Jacob Pan
---
drivers/platform/x86/Kconfig |9 +
drivers/platform/x86/Makefile |1 +
drivers/platform/x86/intel_rapl.c | 764 +
dr
ve lots of repeated text.
> greg k-h
> --
> To unsubscribe from this list: send the line "unsubscribe
> platform-driver-x86" in the body of a message to
> majord...@vger.kernel.org More majordomo info at
> http://vger.kernel.org/majordomo-info.html
[Jacob Pan]
--
Than
On Tue, 09 Apr 2013 09:26:55 -0700
Joe Perches wrote:
> On Tue, 2013-04-09 at 09:15 -0700, Jacob Pan wrote:
> > On Tue, 9 Apr 2013 08:26:38 -0700
> > Greg Kroah-Hartman wrote:
> > > > + if (NULL == rp->name || rp->flag &
> > > > RAPL_PRIMI
On Tue, 09 Apr 2013 09:00:37 -0700
Joe Perches wrote:
> > +static int start_periodic_polling(void)
> > +{
> > + if (polling_started)
> > + goto out;
> > + schedule_delayed_work(&rapl_polling_work, 0);
> > + polling_started = true;
>
> Should polling_started be device specific (
- drop dependencies on X86
- misc cleanups
Jacob Pan (1):
Introduce Intel RAPL cooling device driver
drivers/platform/x86/Kconfig |9 +
drivers/platform/x86/Makefile |1 +
drivers/platform/x86/intel_rapl.c | 889 ++
ch is mainly for monitoring, this driver
focus on the control and usability by user applications.
Signed-off-by: Jacob Pan
---
drivers/platform/x86/Kconfig |9 +
drivers/platform/x86/Makefile |1 +
drivers/platform/x86/intel_rapl.c | 889 +
3
On Fri, 5 Apr 2013 14:35:18 -0700
Greg Kroah-Hartman wrote:
> On Fri, Apr 05, 2013 at 02:26:35PM -0700, Joe Perches wrote:
> > On Fri, 2013-04-05 at 14:02 -0700, Jacob Pan wrote:
> > > +static ssize_t store_event_control(struct device *dev,
> > > +
On Mon, 09 Jul 2012 12:20:18 -0600
Bjorn Helgaas wrote:
> After 253d2e5498, we disable MEM and IO decoding for most devices
> while we size 32-bit BARs. However, we restore the original COMMAND
> register before we size the upper 32 bits of 64-bit BARs, so we can
> still cause a conflict.
>
> T
On Wed, 16 Jan 2013 20:18:49 +0800
Zhang Rui wrote:
> > +#include
> > +
> drivers/thermal/intel_powerclamp.c: In function ‘clamp_thread’:
> drivers/thermal/intel_powerclamp.c:435:4: error: implicit declaration
> of function ‘local_touch_nmi’ [-Werror=implicit-function-declaration]
>
> changin
Signed-off-by: Jacob Pan
---
Need to include the proper nmi.h file such that
local_touch_nmi is always declared.
drivers/thermal/intel_powerclamp.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/thermal/intel_powerclamp.c
b/drivers/thermal/intel_powerclamp.c
efficient in terms of performance per watt.
Please refer to Documentation/thermal/intel_powerclamp.txt for more details.
Signed-off-by: Arjan van de Ven
Signed-off-by: Jacob Pan
---
Documentation/thermal/intel_powerclamp.txt | 307 +++
drivers/thermal/Kconfig| 10
compensation = get_compensation(target_ratio);
> - interval =
> duration_jiffies*100/(target_ratio+compensation);
> + compensated_ratio = target_ratio +
> + get_compensation(target_ratio);
> + if (compensated_ratio <= 0)
> + compensated_ratio = 1;
> + interval = duration_jiffies * 100 /
> compensated_ratio;
> /* align idle time */
> target_jiffies = roundup(jiffies, interval);
[Jacob Pan]
tio = 0;
> end_power_clamp();
>
> But I think that the zero division might happen also when target_ratio
> is non-zero because the compensation might be negative. Therefore
> we also check the sum of target_ratio and compensation explicitly.
>
> Also the compensated_rati
On Wed, 16 Aug 2017 11:44:30 +0200
Joerg Roedel wrote:
> On Tue, Jun 27, 2017 at 12:47:54PM -0700, Jacob Pan wrote:
> > At the top level, three new IOMMU interfaces are introduced:
> > - bind PASID table
> > - passdown invalidation
> > - per device IOMMU fault notif
On Thu, 26 Oct 2017 14:02:13 +0100
"Lukoshkov, Maksim" wrote:
> On 10/6/2017 00:03, Jacob Pan wrote:
> > Signed-off-by: Jacob Pan
> > ---
> > drivers/iommu/dmar.c| 53
> > ++---
> > drivers/iommu/intel-i
On Mon, 13 Nov 2017 13:19:50 +
Jean-Philippe Brucker wrote:
> On 11/11/17 00:00, Jacob Pan wrote:
> > On Fri, 10 Nov 2017 13:54:59 +
> > Jean-Philippe Brucker wrote:
> >
> >> /*
> >> * Note: I tried to synthesize what I believe would be us
On Mon, 13 Nov 2017 13:06:24 +
Jean-Philippe Brucker wrote:
> On 10/11/17 22:18, Jacob Pan wrote:
> > On Fri, 10 Nov 2017 13:54:59 +
> > Jean-Philippe Brucker wrote:
> >
> >> On 09/11/17 19:36, Jacob Pan wrote:
> >>> On Tue, 7 Nov 2017
Joerg
>
> _______
> iommu mailing list
> io...@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/iommu
[Jacob Pan]
On Fri, 2 Oct 2015 09:50:45 +
Olaf Hering wrote:
> The header might be in /usr/include/ncursesw, which is not
> part of the standard include path. This fixes compile on openSUSE.
>
Acked:by: Jacob Pan
thanks
> Signed-off-by: Olaf Hering
> ---
> tools/thermal
Hi Joerg/David,
Any comments on this? I will rebase to 18-rc1.
Thanks,
Jacob
On Thu, 7 Jun 2018 09:56:59 -0700
Jacob Pan wrote:
> When SRIOV VF device IOTLB is invalidated, we need to provide
> the PF source ID such that IOMMU hardware can gauge the depth
> of invalidation queue
On Thu, 18 Jan 2018 19:24:52 +
Jean-Philippe Brucker wrote:
> Hi Jacob,
>
> I've got minor comments after working with this patch, sorry for the
> multiple replies
>
> On 17/11/17 18:55, Jacob Pan wrote:
> [...]
> > diff --git a/drivers/iommu/iommu.c b
On Wed, 10 Jan 2018 11:41:58 +
Jean-Philippe Brucker wrote:
> Hi Jacob,
>
> On 17/11/17 18:55, Jacob Pan wrote:
> [...]
> > +/**
> > + * struct iommu_fault_event - Generic per device fault data
> > + *
> > + * - PCI and non-PCI devices
> > +
For performance and debugging purposes, these trace events help
analyzing device faults and passdown invalidations that interact
with IOMMU subsystem.
E.g.
IOMMU::00:0a.0 type=2 reason=0 addr=0x007ff000 pasid=1
group=1 last=0 prot=1
Signed-off-by: Jacob Pan
---
drivers/iommu/iommu.c
-off-by: Jacob Pan
---
drivers/iommu/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index f3a2134..45db4cc 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -138,6 +138,7 @@ config AMD_IOMMU_V2
# Intel IOMMU support
config
Signed-off-by: Jacob Pan
---
include/trace/events/iommu.h | 112 +++
1 file changed, 112 insertions(+)
diff --git a/include/trace/events/iommu.h b/include/trace/events/iommu.h
index 72b4582..e64eb29 100644
--- a/include/trace/events/iommu.h
+++ b/include
ntrol. Therefore, the fault reasons can be reported are grouped
and generalized based common specifications such as PCI ATS.
Signed-off-by: Jacob Pan
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Liu, Yi L
Signed-off-by: Ashok Raj
---
include/linux/iommu.h
vIOMMU passdown invalidation will be inclusive, PASID cache invalidation
includes TLBs. See Intel VT-d Specification Ch 6.5.2.2 for details.
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-svm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-svm.c b
With the introduction of generic IOMMU device fault reporting API, we
can replace the private fault callback functions with standard function
and event data.
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-svm.c | 7 +--
include/linux/intel-svm.h | 20 +++-
2 files changed
This patch adds page response support for Intel VT-d.
Generic response data is taken from the IOMMU API
then parsed into VT-d specific response descriptor format.
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-iommu.c | 47 +
include/linux/intel
itten into physical IOMMU, we must allow security check at various
layers. Therefore, generic invalidation data format are proposed here,
model specific IOMMU drivers need to convert them into their own format.
Signed-off-by: Liu, Yi L
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Jacob Pan
Sig
: Jacob Pan
Signed-off-by: Ashok Raj
---
drivers/iommu/intel-svm.c | 71 ---
include/linux/iommu.h | 1 +
2 files changed, 62 insertions(+), 10 deletions(-)
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index 99bc9bd..bdc702c
interrupt remapping which has to be
set up early before threaded IRQ is available.
This patch adds an option and a workqueue such that when faults
are requested, DMAR fault IRQ handler can use the IOMMU fault
reporting API to report.
Signed-off-by: Jacob Pan
Signed-off-by: Liu, Yi L
Signed-off-by
timer expires but not
included in this patch. We need to consider the life cycle of page
groupd ID to prevent confusion with reused group ID by a device.
For now, a warning message provides clue of such failure.
Signed-off-by: Jacob Pan
Signed-off-by: Ashok Raj
---
drivers/iommu/iommu.c | 60
and tracking PFSID.
Signed-off-by: Jacob Pan
---
include/linux/intel-iommu.h | 4
1 file changed, 4 insertions(+)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index e4a16dc..0e3b618 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
here by Greg KH
and Joerg. The name iommu_param is chosen here since iommu_data has been used.
Suggested-by: Greg Kroah-Hartman
Signed-off-by: Jacob Pan
Signed-off-by: Jean-Philippe Brucker
Link: https://lkml.org/lkml/2017/10/6/81
---
include/linux/device.h | 3 +++
1 file changed, 3
.
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Jacob Pan
Link: https://lkml.org/lkml/2017/12/7/1725
---
drivers/iommu/iommu.c | 45
include/linux/iommu.h | 52 +++
2 files changed, 97 insertions
ble of assigned devices.
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Liu, Yi L
Signed-off-by: Ashok Raj
Signed-off-by: Jacob Pan
---
drivers/iommu/iommu.c | 19 +++
include/linux/iommu.h | 24
include/uapi/linux/iommu.
When Shared Virtual Memory is exposed to a guest via vIOMMU, extended
IOTLB invalidation may be passed down from outside IOMMU subsystems.
This patch adds invalidation functions that can be used for additional
translation cache types.
Signed-off-by: Jacob Pan
---
drivers/iommu/dmar.c
ernel users
- DMA & IRQ remapping (TBD)
The original idea was brought up by David Woodhouse and discussions
summarized at https://lwn.net/Articles/608914/.
Signed-off-by: Jacob Pan
Signed-off-by: Ashok Raj
Signed-off-by: Jean-Philippe Brucker
---
drivers/iommu/iomm
PFSID should be used in the invalidation descriptor for flushing
device IOTLBs on SRIOV VFs.
Signed-off-by: Jacob Pan
---
drivers/iommu/dmar.c| 6 +++---
drivers/iommu/intel-iommu.c | 16 +++-
include/linux/intel-iommu.h | 5 ++---
3 files changed, 20 insertions(+), 7
device handle,
host IOMMU driver can replace certain fields before submit to the
invalidation queue.
Signed-off-by: Liu, Yi L
Signed-off-by: Ashok Raj
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-iommu.c | 170
1 file changed, 170 insertions
Adding a flag in device domain into to track whether a guest or
user PASID table is bound to a device.
Signed-off-by: Jacob Pan
---
include/linux/intel-iommu.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 13b44bb..e4a16dc
table pointer (GPA) and size.
Device context table entry is modified by Intel IOMMU specific
bind_pasid_table function. This will turn on nesting mode and matching
translation type.
The unbind operation restores default context mapping.
Signed-off-by: Jacob Pan
Signed-off-by: Liu, Yi L
Signed-off
t/response communications between host IOMMU and
guest or other in-kernel users.
- Added unrecoverable fault reporting to DMAR
- Use threaded IRQ function for DMAR fault interrupt and fault
reporting
Jacob Pan (21):
iommu: introduce bind_pasid_table API function
iommu/
Allow both intel-iommu.c and dmar.c to access device_domain_info.
Prepare for additional per device arch data used in TLB flush function
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-iommu.c | 18 --
include/linux/intel-iommu.h | 19 +++
2 files changed, 19
PFSID should be used in the invalidation descriptor for flushing
device IOTLBs on SRIOV VFs.
Signed-off-by: Jacob Pan
---
drivers/iommu/dmar.c| 6 +++---
drivers/iommu/intel-iommu.c | 16 +++-
include/linux/intel-iommu.h | 5 ++---
3 files changed, 20 insertions(+), 7
itten into physical IOMMU, we must allow security check at various
layers. Therefore, generic invalidation data format are proposed here,
model specific IOMMU drivers need to convert them into their own format.
Signed-off-by: Liu, Yi L
Signed-off-by: Jean-Philippe Brucker
Signed-off-by: Jacob Pan
Sig
vIOMMU passdown invalidation will be inclusive, PASID cache invalidation
includes TLBs. See Intel VT-d Specification Ch 6.5.2.2 for details.
Signed-off-by: Jacob Pan
---
drivers/iommu/intel-svm.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-svm.c b
For performance and debugging purposes, these trace events help
analyzing device faults and passdown invalidations that interact
with IOMMU subsystem.
E.g.
IOMMU::00:0a.0 type=2 reason=0 addr=0x007ff000 pasid=1
group=1 last=0 prot=1
Signed-off-by: Jacob Pan
---
drivers/iommu/iommu.c
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