On Thu, Jun 29, 2017 at 04:54:13PM +1000, Cyril Bur wrote:
> The OPAL calls performed in this driver shouldn't be using
> opal_async_wait_response() as this performs a wait_event() which, on
> long running OPAL calls could result in hung task warnings. wait_event()
> also prevents timely signal del
Linus Torvalds writes:
> On Fri, Jul 7, 2017 at 8:59 AM, Linus Torvalds
> wrote:
>>
>>> Patch coming.
>>
>> I'm not seeing a patch, so I did my own. But it's _entirely_ untested.
>> Does the attached fix things for you?
>
> Oh, I see you sent a patch to the list but didn't cc me like in this thr
Linus Torvalds writes:
> On Fri, Jul 7, 2017 at 8:59 AM, Linus Torvalds
> wrote:
>>
>> The copy_flock_fields() macro has the arguments in order ,
>> but all the users seem to do it the other way around.
>
> Looking more at it, I think I'd also like copy_flock_fields() to take
> pointer arguments
Hi Nicholas,
[auto build test ERROR on powerpc/next]
[also build test ERROR on v4.12 next-20170707]
[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/Nicholas-Piggin/powerpc-powernv-Fix-local-TLB
When writing to the process table, we need to ensure the store is
visible to a subsequent access by the MMU. We assume we never have
the PID active while doing the update, so a ptesync/isync pair
should hopefully be a big enough hammer for our purpose.
Signed-off-by: Benjamin Herrenschmidt
---
N
On Fri, Jul 07, 2017 at 10:35:41AM -0700, Linus Torvalds wrote:
> Comments? Michael, does this work for your case?
Looks sane...
> +++ b/fs/fcntl.c
> @@ -520,50 +520,50 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned
> int, cmd,
>
> #ifdef CONFIG_COMPAT
> /* careful - don't use anywh
On Fri, Jul 07, 2017 at 01:29:16AM +1000, Nicholas Piggin wrote:
> On Wed, 5 Jul 2017 22:08:16 +0530
> "Gautham R. Shenoy" wrote:
>
> > From: "Gautham R. Shenoy"
> >
> > Currently, we use the opal call opal_slw_set_reg() to inform the that
> > the Sleep-Winkle Engine (SLW) to restore the conte
On Fri, Jul 7, 2017 at 8:59 AM, Linus Torvalds
wrote:
>
> The copy_flock_fields() macro has the arguments in order ,
> but all the users seem to do it the other way around.
Looking more at it, I think I'd also like copy_flock_fields() to take
pointer arguments, to match all the code around it (bo
On Thu, Jul 6, 2017 at 9:00 AM, Abdul Haleem
wrote:
> Hi Luis,
>
> next-20170705 fails to build on powerpc with below errors.
Hi,
I had sent a fix yesterday. Had you chance to test it?
--
With Best Regards,
Andy Shevchenko
On Fri, Jul 7, 2017 at 8:59 AM, Linus Torvalds
wrote:
>
>> Patch coming.
>
> I'm not seeing a patch, so I did my own. But it's _entirely_ untested.
> Does the attached fix things for you?
Oh, I see you sent a patch to the list but didn't cc me like in this thread.
Hmm. Al - I'd like to add the "
On 2017/07/03 12:51PM, Masami Hiramatsu wrote:
> On Mon, 3 Jul 2017 12:27:33 +0900
> Masami Hiramatsu wrote:
>
> > On Thu, 29 Jun 2017 19:05:37 +0530
> > "Naveen N. Rao" wrote:
> >
> > > Add a kprobes test to ensure that we are able to add a probe on a
> > > module function using 'p :' format,
On Fri, Jul 7, 2017 at 5:46 AM, Michael Ellerman wrote:
> Al Viro writes:
>
>>
>> Switch flock copyin/copyout primitives to copy_{from,to}_user()
>> (2017-06-26 23:52:44 -0400)
>
> This commit seems to have broken networking on a bunch of my PPC
> machines (64-bit kernel, 32-bit userspace).
B
On Fri, Jul 07, 2017 at 10:48:51PM +1000, Michael Ellerman wrote:
> Commit 8c6657cb50cb ("Switch flock copyin/copyout primitives to
> copy_{from,to}_user()") added copy_flock_fields(from, to), but then in all
> cases
> called it with arguments of (to, from). eg:
>
> static int get_compat_flock(
On Fri, Jul 07, 2017 at 01:16:09AM +1000, Nicholas Piggin wrote:
> On Wed, 5 Jul 2017 22:08:15 +0530
> "Gautham R. Shenoy" wrote:
>
> > From: "Gautham R. Shenoy"
> >
> > On POWER9 DD1, in order to get around a hardware issue, we store in
> > every CPU thread's paca the paca pointers of all its
The patch
ASoC: imx-ssi: add check on platform_get_irq return value
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) a
Hi Linus,
Please pull powerpc updates for 4.13.
No conflicts or anything I'm aware of. I did merge my own fixes branch
into my next, so I had to generate the diffstat below by hand, but I'm
pretty sure it's correct.
The following changes since commit 5ed02dbb497422bf225783f46e6eadd237d23d6b:
Commit 8c6657cb50cb ("Switch flock copyin/copyout primitives to
copy_{from,to}_user()") added copy_flock_fields(from, to), but then in all cases
called it with arguments of (to, from). eg:
static int get_compat_flock(struct flock *kfl, struct compat_flock __user
*ufl)
{
struct compat_
Al Viro writes:
> vfs.git topology is rather convoluted this cycle, so
> I'm afraid that it'll take more pull requests than usual ;-/
>
> The first pile is #work.misc-set_fs. Assorted getting rid
> of cargo-culted access_ok(), cargo-culted set_fs() and
> field-by-field copyouts. The same
Hi Nicholas,
On Fri, Jul 07, 2017 at 01:06:46AM +1000, Nicholas Piggin wrote:
> On Wed, 5 Jul 2017 22:08:14 +0530
> "Gautham R. Shenoy" wrote:
>
> > From: "Gautham R. Shenoy"
> >
> > In this patch we define a new function named pnv_power8_idle_init().
> >
> > We move the following code from
Hello Nicholas,
On Fri, Jul 07, 2017 at 01:01:49AM +1000, Nicholas Piggin wrote:
> On Wed, 5 Jul 2017 22:08:13 +0530
> "Gautham R. Shenoy" wrote:
>
> > From: "Gautham R. Shenoy"
> >
> > In the current idle initialization code, if there are failures in
> > pnv_probe_idle_states, then no platfo
Hello Nicholas,
On Fri, Jul 07, 2017 at 12:53:40AM +1000, Nicholas Piggin wrote:
> On Wed, 5 Jul 2017 22:08:12 +0530
> "Gautham R. Shenoy" wrote:
>
> > From: "Gautham R. Shenoy"
> >
> > The details of the platform idle state are exposed by the firmware to
> > the kernel via device tree.
> >
On Fri, 2017-06-30 at 17:28 +1000, Nicholas Piggin wrote:
> On Fri, 30 Jun 2017 10:52:18 +0530
> Abdul Haleem wrote:
>
> > On Fri, 2017-06-30 at 00:45 +1000, Nicholas Piggin wrote:
> > > On Thu, 29 Jun 2017 20:23:05 +1000
> > > Nicholas Piggin wrote:
> > >
> > > > On Thu, 29 Jun 2017 19:36:14 +
__set_fixmap() uses __fix_to_virt() then does the boundary checks
by it self. Instead, we can use fix_to_virt() which does the
verification at build time. For this, we need to use it inline
so that GCC can see the real value of idx at buildtime.
In the meantime, we remove the 'fixmaps' variable.
T
get_pteptr() and __mapin_ram_chunk() are only used locally,
so define them static
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/32/pgtable.h | 3 ---
arch/powerpc/include/asm/nohash/32/pgtable.h | 3 ---
arch/powerpc/mm/pgtable_32.c | 4 ++--
3 files changed
This patch implements STRICT_KERNEL_RWX on PPC32.
As for CONFIG_DEBUG_PAGEALLOC, it deactivates BAT and LTLB mappings
in order to allow page protection setup at the level of each page.
As BAT/LTLB mappings are deactivated, there might be a performance
impact.
Signed-off-by: Christophe Leroy
---
As seen below, allthough the init sections have been freed, the
associated memory area is still marked as executable in the
page tables.
~ dmesg
[5.860093] Freeing unused kernel memory: 592K (c057 - c0604000)
~ cat /sys/kernel/debug/kernel_page_tables
---[ Start of kernel VM ]---
0xc0
__change_page_attr() uses flush_tlb_page().
flush_tlb_page() uses tlbie instruction, which also invalidates
pinned TLBs, which is not what we expect.
This patch modifies the implementation to use flush_tlb_kernel_range()
instead. This will make use of tlbia which will preserve pinned TLBs.
Signed
This patch set implements STRICT_KERNEL_RWX on Powerpc32
after fixing a few issues related to kernel code page protection.
At the end we take the opportunity to get rid of some unneccessary/outdated
fixmap stuff.
Changes from v1 to v2:
* Rebased on latest linux-next following including of STRICT_
Hi Maddy/Anju,
Anju T Sudhakar writes:
> From: Madhavan Srinivasan
>
> Create a new header file to add the data structures and
> macros needed for In-Memory Collection (IMC) counter support.
>
> Signed-off-by: Anju T Sudhakar
> Signed-off-by: Hemant Kumar
> Signed-off-by: Madhavan Srinivasan
PPC folks, maddy, does this work for you guys?
On Thu, Apr 20, 2017 at 08:07:49PM +0800, Jin Yao wrote:
> It is often useful to know the branch types while analyzing branch
> data. For example, a call is very different from a conditional branch.
>
> Currently we have to look it up in binary whil
On Thu, Apr 20, 2017 at 08:07:48PM +0800, Jin Yao wrote:
> v6:
>Update according to the review comments from
>Jiri Olsa . Major modifications are:
>
>1. Move that multiline conditional code inside {} brackets.
>
>2. Move branch_type_stat_display() from builtin-report.c to
>
On Wed, 2017-07-05 at 14:21 -0700, Ram Pai wrote:
> Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6,
> in the 4K backed HPTE pages.These bits continue to be used
> for 64K backed HPTE pages in this patch, but will be freed
> up in the next patch. The bit numbers are big-endian as
> def
Nicholas Piggin writes:
> There are two cases outside the normal address space management
> where a CPU's local TLB is to be flushed:
>
> 1. Host boot; in case something has left stale entries in the
> TLB (e.g., kexec).
>
> 2. Machine check; to clean corrupted TLB entries.
>
> CPU state
Currently ppc_md.get_random_seed uses the powernv_get_random_long function.
A guest calling this function would have to go through the hypervisor. The
'darn' instruction, introduced in POWER9, allows us to bypass this by
directly obtaining a value from the mmio region.
This patch adds a function f
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