On 18/06/2020 02:29, Cédric Le Goater wrote:
> Some PCI adapters, like GPUs, use the "interrupt-map" property to
> describe interrupt mappings other than the legacy INTx interrupts.
> There can be more than 4 mappings.
>
> To clear all interrupts when a PHB is removed, we need to increase the
>
On 8/7/20 9:54 AM, Nathan Lynch wrote:
"Aneesh Kumar K.V" writes:
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index e437a9ac4956..6c659aada55b 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -221,25 +221,51 @@ static void initialize_distance_lookup_table(int
On Fri, 3 Jul 2020 18:28:23 +0530 Srikar Dronamraju
wrote:
> > The memory hotplug changes that somehow because you can hotremove numa
> > nodes and therefore make the nodemask sparse but that is not a common
> > case. I am not sure what would happen if a completely new node was added
> > and its
"Aneesh Kumar K.V" writes:
> diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
> index e437a9ac4956..6c659aada55b 100644
> --- a/arch/powerpc/mm/numa.c
> +++ b/arch/powerpc/mm/numa.c
> @@ -221,25 +221,51 @@ static void initialize_distance_lookup_table(int nid,
> }
> }
>
> +stat
Christoph Hellwig writes:
> On Thu, Aug 06, 2020 at 08:50:20AM +, Christophe Leroy wrote:
>> get_clean_sp() is only used in kernel/signal.c . Move it there.
>>
>> And GCC is smart enough to reduce the function when on PPC32, no
>> need of a special PPC32 simple version.
>
> What about just op
Segher Boessenkool writes:
> On Thu, Aug 06, 2020 at 12:03:33PM +1000, Michael Ellerman wrote:
>> Segher Boessenkool writes:
>> > On Wed, Aug 05, 2020 at 04:24:16PM +1000, Michael Ellerman wrote:
>> >> Christophe Leroy writes:
>> >> > Indeed, 32-bit doesn't have a redzone, so I believe it needs
> On 06-Aug-2020, at 5:50 PM, Arnaldo Carvalho de Melo wrote:
>
> Em Fri, Jul 31, 2020 at 11:04:14PM +0530, Athira Rajeev escreveu:
>>
>>
>>> On 31-Jul-2020, at 1:20 AM, Jiri Olsa wrote:
>>>
>>> On Thu, Jul 30, 2020 at 01:24:40PM +0530, Athira Rajeev wrote:
> On 27-Jul-2020
"Aneesh Kumar K.V" writes:
> Michael Ellerman writes:
>
>> "Aneesh Kumar K.V" writes:
>>> Similar to commit: 89c140bbaeee ("pseries: Fix 64 bit logical memory block
>>> panic")
>>> make sure we update different variables tracking lmb_size are updated
>>> to be 64 bit.
>>
>> That commit went to
On 06/08/2020 22:46, Athira Rajeev wrote:
> Performance monitor interrupt handler checks if any counter has overflown
> and calls `record_and_restart` in core-book3s which invokes
> `perf_event_overflow` to record the sample information.
> Apart from creating sample, perf_event_overflow also doe
Hi Christophe,
I love your patch! Perhaps something to improve:
[auto build test WARNING on powerpc/next]
[also build test WARNING on v5.8 next-20200806]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as doc
Hi!
On Thu, Aug 06, 2020 at 12:03:33PM +1000, Michael Ellerman wrote:
> Segher Boessenkool writes:
> > On Wed, Aug 05, 2020 at 04:24:16PM +1000, Michael Ellerman wrote:
> >> Christophe Leroy writes:
> >> > Indeed, 32-bit doesn't have a redzone, so I believe it needs a stack
> >> > frame wheneve
https://bugzilla.kernel.org/show_bug.cgi?id=207359
--- Comment #4 from Cameron (c...@neo-zeon.de) ---
I converted the box's filesystems from BTRFS to XFS, and switched the page size
from 4k to 64k. The problem appears to be entirely gone now. I am able to
conclusively run 5.7.13 without issue, whi
Exception fixup doesn't require the heady full regs saving,
do it from do_page_fault() directly.
For that, split bad_page_fault() in two parts.
As bad_page_fault() can also be called from other places than
handle_page_fault(), it will still perform exception fixup and
fallback on __bad_page_fault
Check address earlier to simplify the following test.
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/fault.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 9ef9ee244f72..525e0c2b5406 100644
--- a/arch/po
search_exception_tables() is an heavy operation, we have to avoid it.
When KUAP is selected, we'll know the fault has been blocked by KUAP.
Otherwise, it behaves just as if the address was already in the TLBs
and no fault was generated.
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/fault.c
The verification and message introduced by commit 374f3f5979f9
("powerpc/mm/hash: Handle user access of kernel address gracefully")
applies to all platforms, it should not be limited to BOOK3S.
Make the BOOK3S version of sanity_check_fault() the one for all,
and bail out earlier if not BOOK3S.
Fi
To make it more readable, separate page_fault_is_write() and page_fault_is_bad()
to avoir several levels of #ifdefs
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/fault.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fa
Similar to commit 89c140bbaeee ("pseries: Fix 64 bit logical memory block
panic")
make sure different variables tracking lmb_size are updated to be 64 bit.
Fixes: af9d00e93a4f ("powerpc/mm/radix: Create separate mappings for
hot-plugged memory")
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc
Similar to commit 89c140bbaeee ("pseries: Fix 64 bit logical memory block
panic")
make sure different variables tracking lmb_size are updated to be 64 bit.
This was found by code audit.
Cc: sta...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
.../platforms/pseries/hotplug-memory.c
dt_root_addr_cells and dt_root_size_cells are __initdata variables.
So make a copy of the same which can be used post init.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/drmem.h | 2 ++
arch/powerpc/kernel/prom.c | 7 +++
arch/powerpc/mm/numa.c | 1 +
3 files c
Similar to commit 89c140bbaeee ("pseries: Fix 64 bit logical memory block
panic")
make sure different variables tracking lmb_size are updated to be 64 bit.
This was found by code audit.
Cc: sta...@vger.kernel.org
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/drmem.h | 4 ++--
1
On Thu, Aug 06, 2020 at 11:29:01AM +0100, Colin King wrote:
> From: Colin Ian King
>
> There are spelling mistakes in two debug messages. As recommended
> by Wolfram Sang, these can be removed as there is plenty of debug
> in the driver core.
>
> Signed-off-by: Colin Ian King
Reviewed-by: Wolfr
Scott Cheloha writes:
> The H_GetPerformanceCounterInfo (GPCI) hypercall input/output structs are
> useful to modules outside of perf/, so move them into asm/hvcall.h to live
> alongside the other powerpc hypercall structs.
>
> Leave the perf-specific GPCI stuff in perf/hv-gpci.h.
>
> Signed-off-
Scott Cheloha writes:
> The H_GetPerformanceCounterInfo (GPCI) PHYP hypercall has a subcall,
> Affinity_Domain_Info_By_Partition, which returns, among other things,
> a "partition affinity score" for a given LPAR. This score, a value on
> [0-100], represents the processor-memory affinity for the
Michael Ellerman writes:
> Tyrel Datwyler writes:
>> On 7/27/20 11:46 AM, Scott Cheloha wrote:
>>> The H_GetPerformanceCounterInfo (GPCI) PHYP hypercall has a subcall,
>>> Affinity_Domain_Info_By_Partition, which returns, among other things,
>>> a "partition affinity score" for a given LPAR. Thi
* pet...@infradead.org [2020-08-06 15:15:47]:
> > But my understanding is most LPARs don't get migrated back and forth,
> > they'll start life on a P8 and only get migrated to a P9 once when the
> > customer gets a P9. They might then run for a long time (months to
> > years) on the P9 in P8 comp
On Thu, Aug 06, 2020 at 10:25:12PM +1000, Michael Ellerman wrote:
> pet...@infradead.org writes:
> > On Thu, Aug 06, 2020 at 03:32:25PM +1000, Michael Ellerman wrote:
> >
> >> That brings with it a bunch of problems, such as existing software that
> >> has been developed/configured for Power8 and e
* pet...@infradead.org [2020-08-06 10:54:29]:
> On Thu, Aug 06, 2020 at 03:32:25PM +1000, Michael Ellerman wrote:
>
> > That brings with it a bunch of problems, such as existing software that
> > has been developed/configured for Power8 and expects to see SMT8.
> >
> > We also allow LPARs to be
use mem_addr_cells/mem_size_cells instead of fetching the values
again from device tree.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/drmem.c | 24 ++--
1 file changed, 6 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/mm/drmem.c b/arch/powerpc/mm/drmem.c
ind
Michael Roth writes:
> Quoting Michael Roth (2020-08-04 23:37:32)
>> Quoting Michael Ellerman (2020-08-04 22:07:08)
>> > Greg Kurz writes:
>> > > On Tue, 04 Aug 2020 23:35:10 +1000
>> > > Michael Ellerman wrote:
>> > >> Spinning forever seems like a bad idea, but as has been demonstrated at
>> >
Performance monitor interrupt handler checks if any counter has overflown
and calls `record_and_restart` in core-book3s which invokes
`perf_event_overflow` to record the sample information.
Apart from creating sample, perf_event_overflow also does the interrupt
and period checks via perf_event_acco
Michael Ellerman writes:
> "Aneesh Kumar K.V" writes:
>> Similar to commit: 89c140bbaeee ("pseries: Fix 64 bit logical memory block
>> panic")
>> make sure we update different variables tracking lmb_size are updated
>> to be 64 bit.
>
> That commit went to all stable releases, should this one a
Tyrel Datwyler writes:
> On 7/27/20 11:46 AM, Scott Cheloha wrote:
>> The H_GetPerformanceCounterInfo (GPCI) PHYP hypercall has a subcall,
>> Affinity_Domain_Info_By_Partition, which returns, among other things,
>> a "partition affinity score" for a given LPAR. This score, a value on
>> [0-100],
Make it consistent with other usages.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/book3s64/radix_pgtable.c| 7 ---
arch/powerpc/platforms/pseries/hotplug-memory.c | 10 ++
2 files changed, 10 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_
use mem_addr_cells/mem_size_cells instead of fetching the values
again from device tree.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/numa.c | 36 ++--
1 file changed, 10 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/
dt_root_addr_cells and dt_root_size_cells are __initdata variables.
So make a copy of the same which can be used post init.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/drmem.h | 2 ++
arch/powerpc/kernel/prom.c | 7 +++
arch/powerpc/mm/numa.c | 1 +
3 files c
"Aneesh Kumar K.V" writes:
> Similar to commit: 89c140bbaeee ("pseries: Fix 64 bit logical memory block
> panic")
> make sure we update different variables tracking lmb_size are updated
> to be 64 bit.
That commit went to all stable releases, should this one also?
cheers
> diff --git a/arch/po
Christophe Leroy writes:
> Le 06/08/2020 à 04:18, Michael Ellerman a écrit :
>> Christophe Leroy writes:
>>> Le 22/07/2020 à 04:24, Michael Ellerman a écrit :
The assembler says:
arch/powerpc/kernel/head_40x.S:623: Warning: invalid register
expression
>>>
>>> I get exactly the
Christophe Leroy writes:
> Le 25/07/2020 à 13:22, Michael Ellerman a écrit :
>> Hi Christophe,
>>
>> Unfortunately this would collide messily with "uaccess: remove
>> segment_eq" in linux-next, so I'll ask you to do a respin based on that,
>> some comments below.
>
> Done, sent as v3, together wi
pet...@infradead.org writes:
> On Thu, Aug 06, 2020 at 03:32:25PM +1000, Michael Ellerman wrote:
>
>> That brings with it a bunch of problems, such as existing software that
>> has been developed/configured for Power8 and expects to see SMT8.
>>
>> We also allow LPARs to be live migrated from Powe
Em Fri, Jul 31, 2020 at 11:04:14PM +0530, Athira Rajeev escreveu:
>
>
> > On 31-Jul-2020, at 1:20 AM, Jiri Olsa wrote:
> >
> > On Thu, Jul 30, 2020 at 01:24:40PM +0530, Athira Rajeev wrote:
> >>
> >>
> >>> On 27-Jul-2020, at 10:46 PM, Athira Rajeev
> >>> wrote:
> >>>
> >>> Patch set to add
Those function have never existed. Drop their declaration.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/processor.h | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/powerpc/include/asm/processor.h
b/arch/powerpc/include/asm/processor.h
index 9ebcb2f095db..2b4dc10230da 1
Those two functions have been unused since commit identified below.
Drop them.
Fixes: 31bfdb036f12 ("powerpc: Use instruction emulation infrastructure to
handle alignment faults")
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/processor.h | 2 --
arch/powerpc/kernel/fpu.S
Since the commit identified below, the forward declaration of
struct irqaction is useless. Drop it.
Fixes: b709c0832824 ("ppc64: move stack switching up in interrupt processing")
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/irq.h | 1 -
1 file changed, 1 deletion(-)
diff --git a
Since commit identified below, the forward declaration of
struct irq_chip is useless (was struct hw_interrupt_type at that time)
Remove it, together with the associated comment.
Fixes: c0ad90a32fb6 ("[PATCH] genirq: add ->retrigger() irq op to consolidate
hw_irq_resend()")
Signed-off-by: Christo
Srikar Dronamraju writes:
> * Aneesh Kumar K.V [2020-08-02 19:51:41]:
>> Srikar Dronamraju writes:
>> > * Aneesh Kumar K.V [2020-07-31 16:49:14]:
>> >
>> >
>> > If its just to eliminate node 0, then we have 2 other probably better
>> > solutions.
>> > 1. Dont mark node 0 as spl (currently stil
From: Colin Ian King
There are spelling mistakes in two debug messages. As recommended
by Wolfram Sang, these can be removed as there is plenty of debug
in the driver core.
Signed-off-by: Colin Ian King
---
V2: remove the debug rather than fixing the spelling
---
drivers/macintosh/windfarm_l
Le 06/08/2020 à 11:17, Christoph Hellwig a écrit :
Do you urgently need this? My plan for 5.10 is to rebased and submit
the remaining bits of this branch:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/set_fs-removal
which will kill off set_fs/get_fs entirely.
No t
On Thu, Aug 06, 2020 at 08:50:20AM +, Christophe Leroy wrote:
> get_clean_sp() is only used in kernel/signal.c . Move it there.
>
> And GCC is smart enough to reduce the function when on PPC32, no
> need of a special PPC32 simple version.
What about just open coding it in the only caller, whi
Do you urgently need this? My plan for 5.10 is to rebased and submit
the remaining bits of this branch:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/set_fs-removal
which will kill off set_fs/get_fs entirely.
On Thu, Aug 06, 2020 at 03:32:25PM +1000, Michael Ellerman wrote:
> That brings with it a bunch of problems, such as existing software that
> has been developed/configured for Power8 and expects to see SMT8.
>
> We also allow LPARs to be live migrated from Power8 to Power9 (and back), so
> mainta
get_clean_sp() is only used in kernel/signal.c . Move it there.
And GCC is smart enough to reduce the function when on PPC32, no
need of a special PPC32 simple version.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/processor.h | 14 --
arch/powerpc/kernel/signal.c
Le 25/07/2020 à 13:22, Michael Ellerman a écrit :
Hi Christophe,
Unfortunately this would collide messily with "uaccess: remove
segment_eq" in linux-next, so I'll ask you to do a respin based on that,
some comments below.
Done, sent as v3, together with the 2 patchs from Linux next to get i
Le 06/08/2020 à 04:18, Michael Ellerman a écrit :
Christophe Leroy writes:
Le 22/07/2020 à 04:24, Michael Ellerman a écrit :
The assembler says:
arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression
I get exactly the same with head_32.S, for the exact same reason.
On powerpc, we only have USER_DS and KERNEL_DS
Today, this is managed as an 'unsigned long' data space limit
which is used to compare the passed address with, plus a bit
in the thread_info flags that is set whenever modifying the limit
to enable the verification in addr_limit_user_check()
The lim
From: Christoph Hellwig
segment_eq is only used to implement uaccess_kernel. Just open code
uaccess_kernel in the arch uaccess headers and remove one layer of
indirection.
Link: http://lkml.kernel.org/r/20200710135706.537715-5-...@lst.de
Signed-off-by: Christoph Hellwig
Acked-by: Linus Torvald
From: Christoph Hellwig
Patch series "clean up address limit helpers", v2.
In preparation for eventually phasing out direct use of set_fs(), this
series removes the segment_eq() arch helper that is only used to implement
or duplicate the uaccess_kernel() API, and then adds descriptive helpers
to
Similar to commit: 89c140bbaeee ("pseries: Fix 64 bit logical memory block
panic")
make sure we update different variables tracking lmb_size are updated
to be 64 bit.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/mmu.h | 2 +-
arch/powerpc/include/asm/drmem.h |
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