Hi Andrew,
Thanks for the patch.
Please address the issue [1] raised by test bot and resubmit.
Thanks,
Jacek Anaszewski
[1] https://lkml.org/lkml/2016/6/13/1091
On 06/13/2016 10:02 PM, Andrew F. Davis wrote:
When CONFIG_NEW_LEDS is not set make will still descend into the leds
directory but
Userspace can quite legitimately perform an exec() syscall with a
suspended transaction. exec() does not return to the old process,
rather it load a new one and starts that, the expectation therefore is
that the new process starts not in a transaction. Currently exec() is
not treated any differentl
Perform an exec() class syscall with a suspended transaction.
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/tm/Makefile | 3 +-
tools/testing/selftests/powerpc/tm/tm-exec.c| 55 +
tools/testing/selftests/powerpc/tm/tm-execed.c | 47 +++
On 06/15/2016 11:11 AM, Michael Ellerman wrote:
> On Wed, 2016-08-06 at 16:54:27 UTC, "Shreyas B. Prabhu" wrote:
>> pnv_init_idle_states discovers supported idle states from the
>> device tree and does the required initialization. Set power_save
>> function pointer only after this initialization
Balbir Singh writes:
> On 15/06/16 10:38, Balbir Singh wrote:
>>
>> Thanks for a review, I'll do a V2 with some changes
>>
>> Balbir
>>
>
> Michael, please review and check if you like the #ifdef,
> since we are crossing the 32 bit boundary, I've used a
> conditional define to select the featur
On Wed, 2016-08-06 at 16:54:27 UTC, "Shreyas B. Prabhu" wrote:
> pnv_init_idle_states discovers supported idle states from the
> device tree and does the required initialization. Set power_save
> function pointer only after this initialization is done
This looks like a bug fix? Or is this not a co
On Wed, 2016-08-06 at 16:54:23 UTC, "Shreyas B. Prabhu" wrote:
> idle_power7.S handles idle entry/exit for POWER7, POWER8 and in next
> patch for POWER9. Rename the file to a non-hardware specific
> name.
It's not common for all powerpc CPUs though. So can you call it something other
than just "co
On 15/06/16 10:38, Balbir Singh wrote:
>
> Thanks for a review, I'll do a V2 with some changes
>
> Balbir
>
Michael, please review and check if you like the #ifdef,
since we are crossing the 32 bit boundary, I've used a
conditional define to select the feature.
Changelog v2:
The new fe
On 06/14/2016 04:59 PM, Benjamin Herrenschmidt wrote:
> On Tue, 2016-06-14 at 16:17 +0530, Shreyas B Prabhu wrote:
>
>>
>> I ignored adding this check because this is part of initcall and we are
>> unlikely to run out of memory at this state. But I'll add the check in
>> next version.
>
> Why d
On Tue, Jun 14, 2016 at 01:30:53PM +1000, Alexey Kardashevskiy wrote:
> On 10/06/16 16:50, David Gibson wrote:
> > On Thu, Jun 09, 2016 at 04:47:59PM +1000, Alexey Kardashevskiy wrote:
> >> On 23/03/16 14:03, David Gibson wrote:
> >>> On Tue, Mar 22, 2016 at 11:34:55AM +1100, Alexey Kardashevskiy w
On Wed, Jun 15, 2016 at 2:51 AM, Aneesh Kumar K.V
wrote:
> Balbir Singh writes:
>
>> This patch has been lightly tested and needs testing
>> on additional platforms and different page sizes, largely
>> due to the mmu_features changes noted below
>>
>> Commit 50de596de introduced support for the n
Hi,
[auto build test ERROR on v4.7-rc3]
[also build test ERROR on next-20160614]
[cannot apply to powerpc/next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/commits/Balbir-Singh/New-MMU-feature-for
Balbir Singh writes:
> This patch has been lightly tested and needs testing
> on additional platforms and different page sizes, largely
> due to the mmu_features changes noted below
>
> Commit 50de596de introduced support for the new PTE
> format in the functions hpte_encode_r and hpte_encode_avp
If the HSI core is built as a module hsi_boardinfo may still
be built-in as its Kconfig type is bool, which can cause build
issues. Fix this by building this code into the HSI core when
enabled.
Reported-by: kbuild test robot
Signed-off-by: Andrew F. Davis
---
This build error seems to be due to
This patch has been lightly tested and needs testing
on additional platforms and different page sizes, largely
due to the mmu_features changes noted below
Commit 50de596de introduced support for the new PTE
format in the functions hpte_encode_r and hpte_encode_avpn.
This patch abstracts the chang
Hi Philippe,
So I think we're largely okay with this revision. I made one comment
below with respect to the name of the event retrieval callback.
-matt
> On May 23, 2016, at 7:49 AM, Philippe Bergheaud
> wrote:
>
> This adds an afu_driver_ops structure with deliver_event() and
> event_delive
The kexec_file_load system call needs to relocate the purgatory, so
factor out the module relocation code so that it can be shared.
This patch's purpose is to move the ELF relocation logic from
apply_relocate_add to elf_util_64.c with as few changes as
possible. The following changes were needed:
Adds the basic machinery needed by kexec_file_load.
Signed-off-by: Josh Sklar
Signed-off-by: Thiago Jung Bauermann
Cc: ke...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
---
arch/powerpc/Kconfig | 13 +
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerp
This purgatory implementation comes from kexec-tools, almost unchanged.
The only changes were that the sha256_regions global variable was
renamed to sha_regions to match what kexec_file_load expects, and to
use the sha256.c file from x86's purgatory to avoid adding yet another
SHA-256 implementati
A little endian kernel might need to kexec a big endian kernel (the
opposite is less likely but could happen as well), so we can't just cast
the buffer with the binary to ELF structs and use them as is done
elsewhere.
This patch adds functions which do byte-swapping as necessary when
populating th
This uses all the infrastructure built up by the previous patches
in the series to load an ELF vmlinux file and an initrd. It uses the
flattened device tree at initial_boot_params as a base and adjusts memory
reservations and its /chosen node for the next kernel.
elf64_apply_relocate_add was exten
When apply_relocate_add is called, modules are already loaded at their
final location in memory so Elf64_Shdr.sh_addr can be used for accessing
the section contents as well as the base address for relocations.
This is not the case for kexec's purgatory, because it will only be
copied to its final
kexec_locate_mem_hole will be used by the PowerPC kexec_file_load
implementation to find free memory for the purgatory stack.
Signed-off-by: Thiago Jung Bauermann
Cc: Eric Biederman
Cc: Dave Young
Cc: ke...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
---
include/linux/kexec.h | 4 +++
Allow architectures to specify different memory walking functions for
kexec_add_buffer. Intel uses iomem to track reserved memory ranges,
but PowerPC uses the memblock subsystem.
Signed-off-by: Thiago Jung Bauermann
Cc: Eric Biederman
Cc: Dave Young
Cc: ke...@lists.infradead.org
Cc: linux-ker..
kexec_add_buffer uses kexec_buf.buffer and kexec_buf.bufsz to pass along
its own arguments buffer and bufsz, but since they aren't used anywhere
else, it's pointless.
Signed-off-by: Thiago Jung Bauermann
Cc: Eric Biederman
Cc: ke...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Acked-by:
Hello,
This patch series implements the kexec_file_load system call on PowerPC.
It starts by removing an x86 assumption from kexec_file: kexec_add_buffer uses
iomem to find reserved memory ranges, but PowerPC uses the memblock subsystem.
A hook is added so that each arch can specify how memory ra
Vaibhav/Philippe,
Finally getting back around to looking at this.
-matt
> On May 25, 2016, at 2:22 AM, Vaibhav Jain wrote:
>
> Hi Matt,
>
> "Matthew R. Ochs" writes:
>> The purpose for the count is so the AFU driver is only called when it
>> has something to send. Otherwise we don't want to
Em Tue, Jun 14, 2016 at 01:40:47PM +1000, Michael Ellerman escreveu:
> On Fri, 2016-06-10 at 20:08 +0530, Naveen N. Rao wrote:
> > On 2016/06/10 10:36AM, Arnaldo Carvalho de Melo wrote:
> > > Em Fri, Jun 10, 2016 at 06:32:51PM +0530, Naveen N. Rao escreveu:
> > > > Convert ins__find() to a __weak f
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Organization: IBM Australia
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On Tue, 2016-06-14 at 16:17 +0530, Shreyas B Prabhu wrote:
>
> I ignored adding this check because this is part of initcall and we are
> unlikely to run out of memory at this state. But I'll add the check in
> next version.
Why do you malloc the u64 array and not the string pointer array ?
Shoul
On Tue, Jun 07, 2016 at 08:44:03PM +0530, Gautham R. Shenoy wrote:
I'm still puzzled why we don't see this on x86. Afaict there's nothing
PPC specific about this.
> This patch sets the affinity of the worker to
> a) the only online CPU in the cpumask of the worker pool when it comes
>online.
On Tue, 2016-06-14 at 13:26 +1000, Michael Ellerman wrote:
> On Mon, 2016-06-13 at 17:46 +0200, Mathieu Malaterre wrote:
>
> > 2. Try to fix `radeonfb` so that it is able to kick offb out of the
> > way. Eg: https://lists.freedesktop.org/archives/dri-devel/2010-Augu
> > st/002907.html
> >
> > Fro
On 06/14/2016 03:18 AM, Benjamin Herrenschmidt wrote:
> On Wed, 2016-06-08 at 11:54 -0500, Shreyas B. Prabhu wrote:
>>
>> /*
>> * States for dedicated partition case.
>> */
>> @@ -167,6 +183,8 @@ static int powernv_add_idle_states(void)
>> int nr_idle_states = 1; /* Snooze */
>> in
On 06/13/2016 09:04 PM, Daniel Lezcano wrote:
> On Wed, Jun 08, 2016 at 11:54:30AM -0500, Shreyas B. Prabhu wrote:
>> POWER ISA v3 defines a new idle processor core mechanism. In summary,
>> a) new instruction named stop is added.
>> b) new per thread SPR named PSSCR is added which controls the
Michael Ellerman writes:
> On Thu, 2016-09-06 at 06:19:15 UTC, "Aneesh Kumar K.V" wrote:
>> Updated patch below. MMU_FTRS_POWER4 is inherited by others, hence don't
>> update that.
>>
>> >From 4ed66fd24dc4f976969cc34aca8df2ddbc69fe61 Mon Sep 17 00:00:00 2001
>> From: "Aneesh Kumar K.V"
>> Date:
On Mon, Jun 13, 2016 at 10:02 PM, Andrew F. Davis wrote:
> When CONFIG_GPIOLIB is not set make will still descend into the gpio
> directory but nothing will be built. This produces unneeded build
> artifacts and messages in addition to slowing the build. Fix this here.
>
> Signed-off-by: Andrew F
This enable us to catch the wrong usage of cpu_has_feature and
mmu_has_feature in the code. We need to use the feature bit based
check in show_regs because that is used in the reporting code.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/cpufeatures.h | 6 ++
arch/powerpc/inc
From: Kevin Hao
The mmu features are fixed once the probe of mmu features are done.
And the function mmu_has_feature() does be used in some hot path.
The checking of the mmu features for each time of invoking of
mmu_has_feature() seems suboptimal. This tries to reduce this
overhead of this check
From: Kevin Hao
The cpu features are fixed once the probe of cpu features are done.
And the function cpu_has_feature() does be used in some hot path.
The checking of the cpu features for each time of invoking of
cpu_has_feature() seems suboptimal. This tries to reduce this
overhead of this check
From: Kevin Hao
This function is only used by get_vtb(). They are almost the same
except the reading from the real register. Move the mfspr() to
get_vtb() and kill the function mfvtb(). With this, we can eliminate
the use of cpu_has_feature() in very core header file like reg.h.
This is a prepara
From: Kevin Hao
We plan to use jump label for cpu_has_feature. In order to implement
this we need to include the linux/jump_label.h in asm/cputable.h.
But it seems that asm/cputable.h is so basic header file for ppc that
it is almost included by all the other header files. The including of
the li
Call jump_label_init early so that can use static keys for cpu and
mmu feature check. We should have finalzed all the cpu/mmu features when
we call setup_system and we also did feature fixup for ASM based code.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/kernel/setup_32.c | 6 ++
arch/p
From: Kevin Hao
For some archs (such as powerpc) would want to invoke jump_label_init()
in a much earlier stage. So check static_key_initialized in order to
make sure this function run only once.
Signed-off-by: Kevin Hao
Signed-off-by: Aneesh Kumar K.V
---
kernel/jump_label.c | 3 +++
1 file
We want to use the static key based feature check in set_pte_at. Since
we call radix__map_kernel_page early in boot before jump label is
initialized we can't call set_pte_at there. Add radix__set_pte for the
same.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/pgtable-radix.c | 23 +
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