This patchset aims to reduce actual memory use for guests with
sparse memory. The pseries guest uses dynamic DMA windows to map
the entire guest RAM but it only actually maps onlined memory
which may be not be contiguous. I hit this when tried passing
through NVLink2-connected GPU RAM of NVIDIA
This moves actual pages allocation to a separate function which is going
to be reused later in on-demand TCE allocation.
While we are at it, remove unnecessary level size round up as the caller
does this already.
Signed-off-by: Alexey Kardashevskiy
---
We want to support sparse memory and therefore huge chunks of DMA windows
do not need to be mapped. If a DMA window big enough to require 2 or more
indirect levels, and a DMA window is used to map all RAM (which is
a default case for 64bit window), we can actually save some memory by
not
We are going to reuse multilevel TCE code for the userspace copy of
the TCE table and since it is big endian, let's make the copy big endian
too.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 2 +-
arch/powerpc/kvm/book3s_64_vio.c| 11 ++-
Right now we have allocation code in pci-ioda.c and traversing code in
pci.c, let's keep them toghether. However both files are big enough
already so let's move this business to a new file.
While we at it, move the code which links IOMMU table groups to
IOMMU tables as it is not specific to any
This gets rid of a useless wrapper around
pnv_pci_ioda2_table_free_pages().
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 7 +--
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c
On Fri, 8 Jun 2018 14:14:23 +1000
Alexey Kardashevskiy wrote:
> On 8/6/18 1:44 pm, Alex Williamson wrote:
> > On Fri, 8 Jun 2018 13:08:54 +1000
> > Alexey Kardashevskiy wrote:
> >
> >> On 8/6/18 8:15 am, Alex Williamson wrote:
> >>> On Fri, 08 Jun 2018 07:54:02 +1000
> >>> Benjamin
> -Original Message-
> From: Richard Cochran [mailto:richardcoch...@gmail.com]
> Sent: Friday, June 8, 2018 12:27 PM
> To: Y.b. Lu
> Cc: net...@vger.kernel.org; Madalin-cristian Bucur
> ; Rob Herring ; Shawn Guo
> ; David S . Miller ;
> devicet...@vger.kernel.org;
On Fri, 8 Jun 2018 13:52:05 +1000
Alexey Kardashevskiy wrote:
> On 8/6/18 1:35 pm, Alex Williamson wrote:
> > On Fri, 8 Jun 2018 13:09:13 +1000
> > Alexey Kardashevskiy wrote:
> >> On 8/6/18 3:04 am, Alex Williamson wrote:
> >>> On Thu, 7 Jun 2018 18:44:20 +1000
> >>> Alexey Kardashevskiy
On Thu, Jun 07, 2018 at 05:20:40PM +0800, Yangbo Lu wrote:
> This patchset is to support DPAA FMAN PTP clock and HW timestamping.
> It had been verified on both ARM platform and PPC platform.
> - The patch #1 to patch #5 are to support DPAA FMAN 1588 timer in
> ptp_qoriq driver.
> - The patch #6
On Thu, Jun 07, 2018 at 06:44:16PM +1000, Alexey Kardashevskiy wrote:
> The test function takes a page struct pointer which is not used by
> either of two callers in any other way, make it simple and just pass
> a physical address there.
>
> This should cause no behavioral change now but later we
On 8/6/18 1:44 pm, Alex Williamson wrote:
> On Fri, 8 Jun 2018 13:08:54 +1000
> Alexey Kardashevskiy wrote:
>
>> On 8/6/18 8:15 am, Alex Williamson wrote:
>>> On Fri, 08 Jun 2018 07:54:02 +1000
>>> Benjamin Herrenschmidt wrote:
>>>
On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson
On 8/6/18 1:35 pm, Alex Williamson wrote:
> On Fri, 8 Jun 2018 13:09:13 +1000
> Alexey Kardashevskiy wrote:
>> On 8/6/18 3:04 am, Alex Williamson wrote:
>>> On Thu, 7 Jun 2018 18:44:20 +1000
>>> Alexey Kardashevskiy wrote:
diff --git a/drivers/vfio/pci/vfio_pci.c
On Fri, 8 Jun 2018 13:08:54 +1000
Alexey Kardashevskiy wrote:
> On 8/6/18 8:15 am, Alex Williamson wrote:
> > On Fri, 08 Jun 2018 07:54:02 +1000
> > Benjamin Herrenschmidt wrote:
> >
> >> On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
> >>>
> >>> Can we back up and discuss
On Fri, 8 Jun 2018 13:09:13 +1000
Alexey Kardashevskiy wrote:
> On 8/6/18 3:04 am, Alex Williamson wrote:
> > On Thu, 7 Jun 2018 18:44:20 +1000
> > Alexey Kardashevskiy wrote:
> >> diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
> >> index 7bddf1e..38c9475 100644
> >> ---
In commit 2865d08dd9ea876524652f3900b4b3b9c8b22e77
"powerpc/mm: Move the DSISR_PROTFAULT sanity check",
I completely missed the fact that an attempt at reading
kernel memory *will* trip the warning.
So this partially reverts it. We keep the test in a
helper to keep the code clean, but we move it
On 8/6/18 3:04 am, Alex Williamson wrote:
> On Thu, 7 Jun 2018 18:44:20 +1000
> Alexey Kardashevskiy wrote:
>
>> Some POWER9 chips come with special NVLink2 links which provide
>> cacheable memory access to the RAM physically located on NVIDIA GPU.
>> This memory is presented to a host via the
On 8/6/18 8:15 am, Alex Williamson wrote:
> On Fri, 08 Jun 2018 07:54:02 +1000
> Benjamin Herrenschmidt wrote:
>
>> On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
>>>
>>> Can we back up and discuss whether the IOMMU grouping of NVLink
>>> connected devices makes sense? AIUI we have a
>
> So the remaining question at this point is whether the Intel
> behavior (default-deny instead of default-allow) is preferable.
Florian, remind me what behavior needs to fixed?
--
Ram Pai
Now that the PowerMac via-pmu driver supports m68k PowerBooks,
switch over to that driver and remove the via-pmu68k driver.
Cc: Geert Uytterhoeven
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
---
arch/m68k/configs/mac_defconfig | 2 +-
arch/m68k/configs/multi_defconfig | 2 +-
Some of the event counters are overloaded which makes it very
difficult to interpret their values.
Counter 0 is supposed to report CB1 interrupts but it can also count
PMU_INT_WAITING_CHARGER events.
Counter 1 is supposed to report GPIO interrupts but it can also count
other events (depending
Replace an open-coded ffs() with the function call.
Simplify an if-else cascade using a switch statement.
Correct a typo and an indentation issue.
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Reviewed-by: Geert Uytterhoeven
---
drivers/macintosh/via-pmu.c | 39
Now that the 68k Mac port has adopted the via-pmu driver, it must access
the PMU RTC using the appropriate command format. The same code can now
be used for both m68k and powerpc.
Replace the RTC code that's duplicated in arch/powerpc and arch/m68k
with common RTC accessors for Cuda and PMU
Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
device found in those models was never supported by this driver.
Attempting to load the driver usually causes a boot hang.
Cc: Geert Uytterhoeven
Signed-off-by: Finn Thain
---
arch/m68k/mac/misc.c | 6 ++
Put #ifdefs around the Open Firmware, xmon, interrupt dispatch,
battery and suspend code. Add the necessary interrupt handling to
support m68k PowerBooks.
The pmu_kind value is available to userspace using the
PMU_IOC_GET_MODEL ioctl. It is not clear yet what hardware classes
are be needed to
On most PowerPC Macs, the PMU driver uses the shift register and
IO port B from a single VIA chip.
On 68k and early PowerPC PowerBooks, the driver uses the shift register
from one VIA chip together with IO port B from another.
Replace via with via1 and via2 to accommodate this. For the
At present, CONFIG_ADB_PMU depends on CONFIG_PPC_PMAC. When this gets
relaxed to CONFIG_PPC_PMAC || CONFIG_MAC, those Kconfig symbols with
implicit deps on PPC_PMAC will need explicit deps. Add them now.
No functional change.
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
---
On 68k Macs, the via/vias pointer can't be used to determine whether
the PMU driver has been initialized. For portability, add a new state
to indicate that via_find_pmu() succeeded.
After via_find_pmu() executes, testing vias == NULL is equivalent to
testing via == NULL. Replace these tests with
The shift register interrupt flag gets cleared in via_pmu_interrupt()
and once again in pmu_sr_intr(). Fix this theoretical race condition.
Tested-by: Stan Johnson
Signed-off-by: Finn Thain
Reviewed-by: Geert Uytterhoeven
---
drivers/macintosh/via-pmu.c | 1 -
1 file changed, 1 deletion(-)
The pmu_init() function has the __init qualifier, but the ops struct
that holds a pointer to it does not. This causes a build warning.
The driver works fine because the pointer is only dereferenced early.
The function is so small that there's negligible benefit from using
the __init qualifier.
Add missing in_8() accessors to init_pmu() and pmu_sr_intr().
This fixes several sparse warnings:
drivers/macintosh/via-pmu.c:536:29: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:537:33: warning: dereference of noderef expression
drivers/macintosh/via-pmu.c:1455:17:
This series of patches has the following aims.
1) Eliminate duplicated code. Linux presently has two drivers for
the 68HC05-based PMU devices found in Macs: via-pmu and via-pmu68k.
There's no value in having separate PMU drivers for each architecture.
2) Avoid further work on via-pmu68k
On Thu, 7 Jun 2018 10:10:18 + (UTC)
Christophe Leroy wrote:
> At the time being, when adding a new CPU for selection, both
> Kconfig.cputype and Makefile have to be modified.
>
> This patch moves into Kconfig.cputype the name of the CPU to me
> passed to the -mcpu= argument.
Seems like a
On Thu, 07 Jun 2018 22:59:04 +0530
Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar
>
> Extract the MCE error details from RTAS extended log and display it to
> console.
>
> With this patch you should now see mce logs like below:
>
> [ 142.371818] Severe Machine check interrupt
On Thu, 07 Jun 2018 22:58:55 +0530
Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar
>
> If we get a machine check exceptions due to SLB errors then dump the
> current SLB contents which will be very much helpful in debugging the
> root cause of SLB errors. On pseries, as of today system
On Thu, 07 Jun 2018 22:58:33 +0530
Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar
>
> During Machine Check interrupt on pseries platform, register r3 points
> RTAS extended event log passed by hypervisor. Since hypervisor uses r3
> to pass pointer to rtas log, it stores the original r3
On Thu, 07 Jun 2018 22:58:11 +0530
Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar
>
> rtas_log_buf is a buffer to hold RTAS event data that are communicated
> to kernel by hypervisor. This buffer is then used to pass RTAS event
> data to user through proc fs. This buffer is allocated
On Fri, 08 Jun 2018 10:58:54 +1000
Benjamin Herrenschmidt wrote:
> On Thu, 2018-06-07 at 18:34 -0600, Alex Williamson wrote:
> > > We *can* allow individual GPUs to be passed through, either if somebody
> > > designs a system without cross links, or if the user is ok with the
> > > security risk
On Thu, 2018-06-07 at 18:34 -0600, Alex Williamson wrote:
> > We *can* allow individual GPUs to be passed through, either if somebody
> > designs a system without cross links, or if the user is ok with the
> > security risk as the guest driver will not enable them if it doesn't
> > "find" both
On Thu, 07 Jun 2018 22:07:26 +0530
"Naveen N. Rao" wrote:
> Masami Hiramatsu wrote:
> > On Thu, 07 Jun 2018 17:07:00 +0530
> > "Naveen N. Rao" wrote:
> >
> >> Masami Hiramatsu wrote:
> >> > Don't call the ->break_handler() from the arm kprobes code,
> >>
On Fri, 08 Jun 2018 09:20:30 +1000
Benjamin Herrenschmidt wrote:
> On Thu, 2018-06-07 at 16:15 -0600, Alex Williamson wrote:
> > On Fri, 08 Jun 2018 07:54:02 +1000
> > Benjamin Herrenschmidt wrote:
> >
> > > On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
> > > >
> > > > Can we
Hi all,
On Thu, 31 May 2018 09:32:16 +1000 Stephen Rothwell
wrote:
>
> Today's linux-next merge of the powerpc tree got a conflict in:
>
> arch/powerpc/kernel/module_64.c
>
> between commit:
>
> 06aeb9e3f2bc ("powerpc/kbuild: move -mprofile-kernel check to Kconfig")
>
> from the kbuild
On Thu, 2018-06-07 at 16:15 -0600, Alex Williamson wrote:
> On Fri, 08 Jun 2018 07:54:02 +1000
> Benjamin Herrenschmidt wrote:
>
> > On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
> > >
> > > Can we back up and discuss whether the IOMMU grouping of NVLink
> > > connected devices
On Fri, 08 Jun 2018 07:54:02 +1000
Benjamin Herrenschmidt wrote:
> On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
> >
> > Can we back up and discuss whether the IOMMU grouping of NVLink
> > connected devices makes sense? AIUI we have a PCI view of these
> > devices and from that
On Thu, 2018-06-07 at 11:04 -0600, Alex Williamson wrote:
>
> Can we back up and discuss whether the IOMMU grouping of NVLink
> connected devices makes sense? AIUI we have a PCI view of these
> devices and from that perspective they're isolated. That's the view of
> the device used to generate
On Wed, 06 Jun 2018 10:06:23 +0530
Mahesh J Salgaonkar wrote:
> This patch series includes some improvement to Machine check handler
> for pseries. Patch 1 fixes an issue where machine check handler
> crashes kernel while accessing vmalloc-ed buffer while in nmi context.
> Patch 3 dumps the SLB
Hi there,
I have a reproducible UBSAN appearing in dmesg after a while on my G4
(*). Could anyone suggest a way to diagnose the actual root issue here
(or is it just a false positive) ?
Thanks,
(*)
[41877.514338]
From: Mahesh Salgaonkar
Extract the MCE error details from RTAS extended log and display it to
console.
With this patch you should now see mce logs like below:
[ 142.371818] Severe Machine check interrupt [Recovered]
[ 142.371822] NIP [dca301b8]: init_module+0x1b8/0x338
From: Mahesh Salgaonkar
If we get a machine check exceptions due to SLB errors then dump the
current SLB contents which will be very much helpful in debugging the
root cause of SLB errors. On pseries, as of today system crashes on SLB
errors. These are soft errors and can be fixed by flushing
From: Mahesh Salgaonkar
On pseries, the machine check error details are part of RTAS extended
event log passed under Machine check exception section. This patch adds
the definition of rtas MCE event section and related helper
functions.
Signed-off-by: Mahesh Salgaonkar
---
From: Mahesh Salgaonkar
During Machine Check interrupt on pseries platform, register r3 points
RTAS extended event log passed by hypervisor. Since hypervisor uses r3
to pass pointer to rtas log, it stores the original r3 value at the
start of the memory (first 8 bytes) pointed by r3. Since
From: Mahesh Salgaonkar
rtas_log_buf is a buffer to hold RTAS event data that are communicated
to kernel by hypervisor. This buffer is then used to pass RTAS event
data to user through proc fs. This buffer is allocated from vmalloc
(non-linear mapping) area.
On Machine check interrupt, register
This patch series includes some improvement to Machine check handler
for pseries. Patch 1 fixes an issue where machine check handler crashes
kernel while accessing vmalloc-ed buffer while in nmi context.
Patch 2 fixes endain bug while restoring of r3 in MCE handler.
Patch 4 dumps the SLB contents
On Thu, 7 Jun 2018 18:44:19 +1000
Alexey Kardashevskiy wrote:
What's an "extra region", -ENOCOMMITLOG
> Signed-off-by: Alexey Kardashevskiy
> ---
> drivers/vfio/pci/vfio_pci_private.h | 3 +++
> drivers/vfio/pci/vfio_pci.c | 10 --
> 2 files changed, 11 insertions(+), 2
On Thu, 7 Jun 2018 18:44:20 +1000
Alexey Kardashevskiy wrote:
> Some POWER9 chips come with special NVLink2 links which provide
> cacheable memory access to the RAM physically located on NVIDIA GPU.
> This memory is presented to a host via the device tree but remains
> offline until the NVIDIA
On Thu, 7 Jun 2018 18:44:15 +1000
Alexey Kardashevskiy wrote:
> Here is an rfc of some patches adding psaa-through support
> for NVIDIA V100 GPU found in some POWER9 boxes.
>
> The example P9 system has 6 GPUs, each accompanied with 2 bridges
> representing the hardware links (aka NVLink2):
>
Masami Hiramatsu wrote:
On Thu, 07 Jun 2018 17:07:00 +0530
"Naveen N. Rao" wrote:
Masami Hiramatsu wrote:
> Don't call the ->break_handler() from the arm kprobes code,
^^^ powerpc
> because it was only used by jprobes which got removed.
>
> This
On 06/07/2018 04:15 PM, Nicholas Piggin wrote:
> On Thu, 07 Jun 2018 15:36:25 +0530
> Mahesh J Salgaonkar wrote:
>
>> This patch series includes some improvement to Machine check handler
>> for pseries. Patch 1 fixes an issue where machine check handler crashes
>> kernel while accessing
On Wed, Jun 06, 2018 at 10:23:06PM -0700, Christoph Hellwig wrote:
> On Thu, May 31, 2018 at 08:43:58PM +0300, Michael S. Tsirkin wrote:
> > Pls work on a long term solution. Short term needs can be served by
> > enabling the iommu platform in qemu.
>
> So, I spent some time looking at converting
On 6/7/18 8:45 AM, Jens Axboe wrote:
> On 6/7/18 4:37 AM, vrbagal1 wrote:
>> On 2018-06-07 13:12, Bart Van Assche wrote:
>>> On Thu, 2018-06-07 at 12:56 +0530, Venkat Rao B wrote:
On Thursday 07 June 2018 12:46 PM, Bart Van Assche wrote:
> On Thu, 2018-06-07 at 12:38 +0530, vrbagal1
Currently ptrace doesn't flush the register state when the
checkpointed GPRs of a 32-bit thread are accessed. This can cause core
dumps to have stale data in the checkpointed GPR note.
---
arch/powerpc/kernel/ptrace.c | 20
1 file changed, 20 insertions(+)
diff --git
This patch copies the the missing VSX regset to the compat_regsets
array.
Not having this regset can cause issues in fs/binfmt_elf.c in the
fill_thread_core_info function, which iterates over all the regsets
defined in compat_regsets to fill note info for a core dump of a
32-bit thread. However,
This patch allows setting and getting PMU registers from 32-bit
threads.
---
arch/powerpc/kernel/ptrace.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 2da0668a96dc..3a9c4ae65429 100644
--- a/arch/powerpc/kernel/ptrace.c
The PMU regset exposed through ptrace has 5 64-bit words, which are
all copied in and out. However, mmcr0 in the thread_struct is an
unsigned, which causes pmu_set to clobber the next variable in the
thread_struct (used_ebb), and pmu_get to return the same variable in
one half of the mmcr0 slot.
Currently, the ebb_set function for writing to the EBB regset returns
ENODATA when ebb is active in the thread, and copies in the data when
it is inactive. This patch inverts the condition so that it matches
ebb_get and ebb_active.
---
arch/powerpc/kernel/ptrace.c | 2 +-
1 file changed, 1
This series attempts to fix a few issues with ptrace regsets.
Patch 1 simply inverts the active predicate for ebb_set. I don't know
if there was a reason for having opposite predicates in
ebb_get/ebb_set, but I assumed this was a typo.
Patch 2 adds the usual HTM prologue for regsets to the
On 6/7/18 4:37 AM, vrbagal1 wrote:
> On 2018-06-07 13:12, Bart Van Assche wrote:
>> On Thu, 2018-06-07 at 12:56 +0530, Venkat Rao B wrote:
>>> On Thursday 07 June 2018 12:46 PM, Bart Van Assche wrote:
On Thu, 2018-06-07 at 12:38 +0530, vrbagal1 wrote:
> Observing Kernel oops and machine
On Thu, 07 Jun 2018 17:07:00 +0530
"Naveen N. Rao" wrote:
> Masami Hiramatsu wrote:
> > Don't call the ->break_handler() from the arm kprobes code,
> ^^^ powerpc
>
> > because it was only used by jprobes which got removed.
> >
> > This also makes
On Thu, 07 Jun 2018 17:01:23 +0530
"Naveen N. Rao" wrote:
> Masami Hiramatsu wrote:
> > Remove arch dependent setjump/longjump functions
> > and unused fields in kprobe_ctlblk for jprobes
> > from arch/powerpc. This also reverts commits
> > related __is_active_jprobe() function.
> >
> >
vrbagal1 writes:
> On 2018-06-07 13:12, Bart Van Assche wrote:
>> On Thu, 2018-06-07 at 12:56 +0530, Venkat Rao B wrote:
>>> On Thursday 07 June 2018 12:46 PM, Bart Van Assche wrote:
>>> > On Thu, 2018-06-07 at 12:38 +0530, vrbagal1 wrote:
>>> > > Observing Kernel oops and machine reboots while
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Hi Linus,
Please pull powerpc updates for 4.18:
The following changes since commit 6da6c0db5316275015e8cc2959f12a17584aeb64:
Linux v4.17-rc3 (2018-04-29 14:17:42 -0700)
are available in the git repository at:
Masami Hiramatsu wrote:
Clear current_kprobe and enable preemption in kprobe
even if pre_handler returns !0.
This simplifies function override using kprobes.
Jprobe used to require to keep the preemption disabled and
keep current_kprobe until it returned to original function
entry. For this
Masami Hiramatsu wrote:
Don't call the ->break_handler() from the arm kprobes code,
^^^ powerpc
because it was only used by jprobes which got removed.
This also makes skip_singlestep() a static function since
only ftrace-kprobe.c is using this
Masami Hiramatsu wrote:
Remove arch dependent setjump/longjump functions
and unused fields in kprobe_ctlblk for jprobes
from arch/powerpc. This also reverts commits
related __is_active_jprobe() function.
Signed-off-by: Masami Hiramatsu
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc:
On Thu, 07 Jun 2018 15:36:25 +0530
Mahesh J Salgaonkar wrote:
> This patch series includes some improvement to Machine check handler
> for pseries. Patch 1 fixes an issue where machine check handler crashes
> kernel while accessing vmalloc-ed buffer while in nmi context.
> Patch 3 dumps the SLB
On 2018-06-07 13:12, Bart Van Assche wrote:
On Thu, 2018-06-07 at 12:56 +0530, Venkat Rao B wrote:
On Thursday 07 June 2018 12:46 PM, Bart Van Assche wrote:
> On Thu, 2018-06-07 at 12:38 +0530, vrbagal1 wrote:
> > Observing Kernel oops and machine reboots while executing memory hotplug
> > test
GCC supports -mcpu=e300c2 and -mcpu=e300c3
This patch gives the opportunity to tune kernel to one of
those two types.
Signed-off-by: Christophe Leroy
---
arch/powerpc/platforms/Kconfig.cputype | 10 ++
1 file changed, 10 insertions(+)
diff --git
This patch extends to PPC32 the capability to select the exact
CPU type.
Signed-off-by: Christophe Leroy
---
arch/powerpc/platforms/Kconfig.cputype | 15 +++
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/platforms/Kconfig.cputype
At the time being, when adding a new CPU for selection, both
Kconfig.cputype and Makefile have to be modified.
This patch moves into Kconfig.cputype the name of the CPU to me
passed to the -mcpu= argument.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Makefile | 8 +---
r3 in MCE handler.
From: Mahesh Salgaonkar
During Machine Check interrupt on pseries platform, register r3 points
RTAS extended event log passed by hypervisor. Since hypervisor uses r3
to pass pointer to rtas log, it stores the original r3 value at the
start of the memory (first 8 bytes)
From: Mahesh Salgaonkar
Extract the MCE eror details from RTAS extended log and display it to
console.
With this patch you should now see mce logs like below:
[ 142.371818] Severe Machine check interrupt [Recovered]
[ 142.371822] NIP [dca301b8]: init_module+0x1b8/0x338
From: Mahesh Salgaonkar
If we get a machine check exceptions due to SLB errors then dump the
current SLB contents which will be very much helpful in debugging the
root cause of SLB errors. On pseries, as of today system crashes on SLB
errors. These are soft errors and can be fixed by flushing
From: Mahesh Salgaonkar
On pseries, the machine check error details are part of RTAS extended
event log passed under Machine check exception section. This patch adds
the definition of rtas MCE event section and related helper
functions.
Signed-off-by: Mahesh Salgaonkar
---
From: Mahesh Salgaonkar
rtas_log_buf is a buffer to hold RTAS event data that are communicated
to kernel by hypervisor. This buffer is then used to pass RTAS event
data to user through proc fs. This buffer is allocated from vmalloc
(non-linear mapping) area.
On Machine check interrupt, register
This patch series includes some improvement to Machine check handler
for pseries. Patch 1 fixes an issue where machine check handler crashes
kernel while accessing vmalloc-ed buffer while in nmi context.
Patch 3 dumps the SLB contents on SLB MCE errors to improve the debugability.
Patch 4
We implement regs_set_return_value() and override_function_with_return()
for this purpose.
On powerpc, a return from a function (blr) just branches to the location
contained in the link register. So, we can just update pt_regs rather
than redirecting execution to a dummy function that returns.
Added the get_ts_info interface for ethtool to check
the timestamping capability.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- Removed ifdef for hw timestamp.
Changes for v3:
- None.
---
drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c | 39
1 files
This patch is to add hardware timestamping support
for dpaa_eth. On Rx, timestamping is enabled for
all frames. On Tx, we only instruct the hardware
to timestamp the frames marked accordingly by the
stack.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- Removed ifdef for timestamp code.
Defined frame description command FM_FD_CMD_UPD for
prepended data updating.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- None.
---
drivers/net/ethernet/freescale/fman/fman.h |1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git
This patch is to add fman_port_get_tstamp() interface
to get timestamp.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- Moved endianness conversion from dpaa to fman API.
---
drivers/net/ethernet/freescale/fman/fman_port.c | 12
This patch is to add set_tstamp interface for memac,
dtsec, and 10GEC controllers to configure HW timestamping.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- None.
---
drivers/net/ethernet/freescale/fman/fman_dtsec.c | 27 ++
This patch is to move ptp timer node out of fman.
Because ptp timer will be probed by ptp_qoriq driver,
it should be an independent device in case of conflict
memory mapping.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- Fixed address-cells for ptp-timer.
Changes for v3:
- None.
This patch is to move ptp timer node out of fman.
Because ptp timer will be probed by ptp_qoriq driver,
it should be an independent device in case of conflict
memory mapping.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- None.
---
This patch is to add bindings description for DPAA
FMan 1588 timer, and also remove its description in
fsl-fman dt-bindings document.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- None.
---
Documentation/devicetree/bindings/net/fsl-fman.txt | 25
This patch is to support DPAA (Data Path Acceleration Architecture)
1588 timer by adding "fsl,fman-ptp-timer" compatible, sharing
interrupt with FMan, adding FSL_DPAA_ETH dependency, and fixing
up register offset.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
This patch is to share fman event interrupt because
the 1588 timer driver will also use this interrupt.
Signed-off-by: Yangbo Lu
---
Changes for v2:
- None.
Changes for v3:
- None.
---
drivers/net/ethernet/freescale/fman/fman.c |3 ++-
1 files changed, 2 insertions(+), 1
This patchset is to support DPAA FMAN PTP clock and HW timestamping.
It had been verified on both ARM platform and PPC platform.
- The patch #1 to patch #5 are to support DPAA FMAN 1588 timer in
ptp_qoriq driver.
- The patch #6 to patch #10 are to add HW timestamping support in
DPAA ethernet
Hi Madalin,
> -Original Message-
> From: Madalin-cristian Bucur
> Sent: Thursday, June 7, 2018 4:24 PM
> To: Y.b. Lu ; net...@vger.kernel.org; Richard Cochran
> ; Rob Herring ; Shawn
> Guo ; David S . Miller
> Cc: devicet...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org;
>
The test function takes a page struct pointer which is not used by
either of two callers in any other way, make it simple and just pass
a physical address there.
This should cause no behavioral change now but later we may start
supporting host addresses for memory devices which are not backed
Here is an rfc of some patches adding psaa-through support
for NVIDIA V100 GPU found in some POWER9 boxes.
The example P9 system has 6 GPUs, each accompanied with 2 bridges
representing the hardware links (aka NVLink2):
4 0004:04:00.0 3D: NVIDIA Corporation GV100GL [Tesla V100 SXM2] (rev a1)
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