On EEH events the kernel will print a dump of relevant registers.
If EEH is unavailable (i.e. CONFIG_EEH is disabled, a new platform
doesn't have EEH support, etc) this information isn't readily available.
Add a new debugfs handler to trigger a PHB register dump, so that this
information can be ma
On Mon, 2016-07-25 at 06:12 +, Yangbo Lu wrote:
> Hi Scott,
>
>
> >
> > -Original Message-
> > From: Scott Wood [mailto:o...@buserror.net]
> > Sent: Friday, July 22, 2016 12:45 AM
> > To: Michael Ellerman; Arnd Bergmann
> > Cc: linux-...@vger.kernel.org; devicet...@vger.kernel.org; l
Benjamin Herrenschmidt writes:
> On Mon, 2016-07-25 at 20:36 +1000, Michael Ellerman wrote:
>> That would be nice, but these look fishy at least:
>>
>> arch/powerpc/platforms/cell/spu_manage.c: if
>> (!firmware_has_feature(FW_FEATURE_LPAR))
>> arch/powerpc/platforms/cell/spu_manage.c:
Device tree blob must be passed to a second kernel on DTB-capable
archs, like powerpc and arm64, but the current kernel interface
lacks this support.
This patch extends kexec_file_load system call by adding an extra
argument to this syscall so that an arbitrary number of file descriptors
can be ha
From: Dan Carpenter
Date: Thu, 14 Jul 2016 13:48:02 +0300
> There was clearly supposed to be a break statement here. Currently we
> use the k2 ata timings instead of sh ata ones we intended. Probably no
> one has this hardware anymore so it likely doesn't make a difference
> beyond the static c
On Tue, 2016-07-26 at 14:22 -0700, Andrey Smirnov wrote:
> On Tue, Jul 26, 2016 at 12:59 AM, Scott Wood wrote:
> >
> > On Mon, 2016-07-25 at 21:25 -0700, Andrey Smirnov wrote:
> > >
> > > Convert fsl_rstcr_restart into a function to be registered with
> > > register_reset_handler() API and intro
On Tue, Jul 26, 2016 at 12:59 AM, Scott Wood wrote:
> On Mon, 2016-07-25 at 21:25 -0700, Andrey Smirnov wrote:
>> Convert fsl_rstcr_restart into a function to be registered with
>> register_reset_handler() API and introduce fls_rstcr_restart_register()
>> function that can be added as an initcall
In ppc8xx tlbmiss handler, we consider a page valid if both
_PAGE_PRESENT and _PAGE_ACCESSED are set.
Is there any chance to have _PAGE_ACCESSED set and not _PAGE_PRESENT ?
Otherwise we could simplify the handler by considering the page valid
only when _PAGE_ACCESSED is set
Christophe
__
Early in boot we binary patch some sections of code based on the CPU and
MMU feature bits. But it is a one-time patching, there is no facility
for repatching the code later if the set of features change.
It is a major bug if the set of features changes after we've done the
code patching - so add a
Up until now we needed to do the MMU init before feature patching,
because part of the MMU init was scanning the device tree and setting
and/or clearing some MMU feature bits.
Now that we have split that MMU feature modification out into routines
called from early_init_devtree() (called earlier) w
Like we just did for hash, split the device tree scanning parts out and
call them from mmu_early_init_devtree().
Signed-off-by: Michael Ellerman
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc/mm/init_64.c| 4 +++-
arch/powerpc/mm/pgtable-radix.c | 3 +--
Currently MMU initialisation (early_init_mmu()) consists of a mixture of
scanning the device tree, setting MMU feature bits, and then also doing
actual initialisation of MMU data structures.
We'd like to decouple the setting of the MMU features from the actual
setup. So split out the device tree s
Move the handling of the disable_radix command line argument into the
newly created mmu_early_init_devtree().
It's an MMU option so it's preferable to have it in an mm related file,
and it also means platforms that don't support radix don't have to carry
the code.
Signed-off-by: Michael Ellerman
Empty for now, but we'll add to it in the next patch.
Signed-off-by: Michael Ellerman
---
arch/powerpc/include/asm/book3s/64/mmu.h | 1 +
arch/powerpc/include/asm/mmu.h | 1 +
arch/powerpc/kernel/prom.c | 2 ++
arch/powerpc/mm/init_64.c| 6 ++
4 files
On Tuesday 26 July 2016 05:51 PM, Benjamin Herrenschmidt wrote:
On Mon, 2016-07-25 at 20:22 +0530, Madhavan Srinivasan wrote:
But this patchset uses Benjamin Herrenschmidt suggestion of using
arch_local_irq_disable_var() to soft_disable interrupts (including PMIs).
After finishing the "op", ar
On Mon, 2016-07-25 at 20:22 +0530, Madhavan Srinivasan wrote:
> But this patchset uses Benjamin Herrenschmidt suggestion of using
> arch_local_irq_disable_var() to soft_disable interrupts (including PMIs).
> After finishing the "op", arch_local_irq_restore() called and correspondingly
> interrupts
On Saturday, July 23, 2016 11:35:51 PM CEST Arvind Yadav wrote:
> diff --git a/include/linux/err.h b/include/linux/err.h
> index 1e35588..a42f942 100644
> --- a/include/linux/err.h
> +++ b/include/linux/err.h
> @@ -19,6 +19,7 @@
> #ifndef __ASSEMBLY__
>
> #define IS_ERR_VALUE(x) unlikely((unsig
Greg KH writes:
> On Tue, Jul 26, 2016 at 02:11:11PM +1000, Michael Ellerman wrote:
>> Quoting Michael Ellerman (2016-07-11 16:29:20)
>> > Greg are you happy to take these two?
>>
>> I don't see this series anywhere, do you mind if I take them via the
>> powerpc tree for 4.8 ? Or do you want to
Russell Currey writes:
> On Tue, 2016-07-26 at 11:45 +1000, Michael Ellerman wrote:
>> Quoting Russell Currey (2016-07-22 15:23:36)
>>
>> DEFINE_SIMPLE_ATTRIBUTE(fops_foo, NULL, foo_set, "%llu\n");
>>
>> That requires that you write "1" to the file to trigger the reg dump.
>
> I don't think I c
From: Arvind Yadav
> Sent: 23 July 2016 19:06
> IS_ERR_VALUE() assumes that its parameter is an unsigned long.
> It can not be used to check if an 'unsigned int' reflects an error.
> As they pass an 'unsigned int' into a function that takes an
> 'unsigned long' argument. This happens to work becaus
From: Simon Guo
Normally, when MSR[VSX/VR/SPE] bits = 1, the used_vsr/used_vr/used_spe
bit have already been set. However signal frame locates at user space
and it is controlled by user application. It is up to kernel to make
sure used_vsr/used_vr/used_spe(in kernel)=1 and consistent with MSR
bit
Hi Jason,
On Mon, Jul 26, 2016 at 03:24AM, Jason Cooper wrote:
> -Original Message-
> From: Jason Cooper [mailto:ja...@lakedaemon.net]
> Sent: Tuesday, July 26, 2016 3:24 AM
> To: Qiang Zhao
> Cc: o...@buserror.net; linuxppc-dev@lists.ozlabs.org; linux-
> ker...@vger.kernel.org; Xiaobo Xi
On Mon, 2016-07-25 at 21:25 -0700, Andrey Smirnov wrote:
> Convert fsl_rstcr_restart into a function to be registered with
> register_reset_handler() API and introduce fls_rstcr_restart_register()
> function that can be added as an initcall that would do aforementioned
> registration.
>
> Signed-o
On Tue, 26 Jul 2016 12:52:02 +0530
Madhavan Srinivasan wrote:
> On Tuesday 26 July 2016 12:40 PM, Nicholas Piggin wrote:
> > On Tue, 26 Jul 2016 12:16:32 +0530
> > Madhavan Srinivasan wrote:
> >
> >> On Tuesday 26 July 2016 12:00 PM, Nicholas Piggin wrote:
> >>> On Tue, 26 Jul 2016 11:55:51
On Tuesday 26 July 2016 12:40 PM, Nicholas Piggin wrote:
On Tue, 26 Jul 2016 12:16:32 +0530
Madhavan Srinivasan wrote:
On Tuesday 26 July 2016 12:00 PM, Nicholas Piggin wrote:
On Tue, 26 Jul 2016 11:55:51 +0530
Madhavan Srinivasan wrote:
On Tuesday 26 July 2016 11:16 AM, Nicholas Piggi
On Tue, 26 Jul 2016 12:16:32 +0530
Madhavan Srinivasan wrote:
> On Tuesday 26 July 2016 12:00 PM, Nicholas Piggin wrote:
> > On Tue, 26 Jul 2016 11:55:51 +0530
> > Madhavan Srinivasan wrote:
> >
> >> On Tuesday 26 July 2016 11:16 AM, Nicholas Piggin wrote:
> >>> On Mon, 25 Jul 2016 20:22:20
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