The function doesn't exist anymore
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/include/asm/kvm_ppc.h | 4
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/include/asm/kvm_ppc.h
index bfef1ae..0c41865 100644
--- a/arch/powerpc/include
Add 32 and 8 bit variants
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/include/asm/bitops.h | 8
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/include/asm/bitops.h
b/arch/powerpc/include/asm/bitops.h
index bc5fdfd..33a24fd 100644
--- a/arch/powerpc/include/asm/bi
Some powerpc platforms use this to move IRQs away from a CPU
being unplugged. This function has several bugs such as not
taking the right locks or failing to NULL check pointers.
There's a new generic function doing exactly the same thing
without all the bugs, so let's use it instead.
Signed-off-
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/include/asm/opal-api.h| 302 -
arch/powerpc/include/asm/opal.h| 36 +++
arch/powerpc/platforms/powernv/opal-wrappers.S | 15 ++
3 files changed, 302 insertions(+), 51 deletions(-)
diff --
We traditionally have linux/ before asm/
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/kvm/book3s.c| 8
arch/powerpc/kvm/book3s_hv.c | 18 +-
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3
It's only used within the same file it's defined
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/include/asm/kvm_ppc.h | 4
arch/powerpc/kvm/book3s_xics.c | 2 +-
2 files changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/powerpc/include/asm/kvm_ppc.h
b/arch/powerpc/incl
Some platforms (will) need to perform allocations before bringing
a new CPU online. Doing it from smp_ops->setup_cpu is the wrong
thing to do:
- It has no useful failure path (too late)
- Calling any allocator will enable interrupts prematurely
causing problems with large decrementer among ot
Otherwise KVM guests might mess with it even when told not
to causing bad thing interrupts in the host
Signed-off-by: Benjamin Herrenschmidt
---
arch/powerpc/kernel/setup_64.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/set
Cell will wake from low power state at the system reset interrupt,
with the event encoded in SRR1, rather than waking at the interrupt
vector that corresponds to that event.
The system reset handler for this platform decodes SRR1 event reason
and calls the interrupt handler to process it directly
PA Semi will wake from low power state at the system reset interrupt,
with the event encoded in SRR1, rather than waking at the interrupt
vector that corresponds to that event.
The system reset handler for this platform decodes SRR1 event reason
and calls the interrupt handler to process it direct
This change was discussed and tested last week. This just
splits them up and adds a changelog and SOB tags for merge.
Thanks,
Nick
Nicholas Piggin (2):
powerpc/pasemi: do not process external or decrementer interrupts from
sreset
powerpc/cbe: do not process external or decremeter interrup
If not all threads were in winkle, full state loss recovery is not
necessary and can be avoided. A previous patch removed this optimisation
due to some complexity with the implementation. Re-implement it by
counting the number of threads in winkle with the per-core idle state.
Only restore full sta
When taking the core idle state lock, grab it immediately like a
regular lock, rather than adding more tests in there. Holding the lock
keeps it stable, so there is no need to do it whole holding the
reservation.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Nicholas Piggin
---
arch/powerpc/ker
In preparation for adding more bits to the core idle state word,
move the lock bit up, and unlock by flipping the lock bit rather
than masking off all but the thread bits.
Add branch hints for atomic operations while we're here.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Nicholas Piggin
---
The ISA specifies power save wakeup can cause a machine check interrupt.
The machine check handler currently has code to handle that for POWER8,
but POWER9 crashes when trying to execute the P8 style sleep
instructions.
So queue up the machine check, then call into the idle code to wake up
as the
This reduces the number of nops for POWER8
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/idle_book3s.S | 19 ---
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/kernel/idle_book3s.S
b/arch/powerpc/kernel/idle_b
The POWER8 idle code has a neat trick of programming the power on engine
to restore a low bit into HSPRG0, so idle wakeup code can test and see
if it has been programmed this way and therefore lost all state. Restore
time can be reduced if winkle has not been reached.
However this messes with our
Should be no functional change.
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/exceptions-64s.S | 26 +
arch/powerpc/kernel/idle_book3s.S| 73
2 files changed, 49 insertions(+), 50 deletions(-)
diff --g
Since last time:
- Commented machine check handler wakeup to describe why registers are
not lost.
- Dropped patch to make PACA_THREAD_IDLE_STATE POWER8-only because
Gautham will use it for POWER9 DD1.
- Removed some leftover debug cruft noticed by Gautham, and re-tested
on POWER8. Added some
On Fri, Mar 17, 2017 at 11:41:14PM +0300, Dan Carpenter wrote:
> kzalloc() won't actually fail because sizeof(*resize) is small, but
> static checkers complain.
>
> Signed-off-by: Dan Carpenter
Oops, that's an embarrassing mistake.
Acked-by: David Gibson
>
> diff --git a/arch/powerpc/kvm/boo
On 03/16/2017 06:49 PM, Gautham R Shenoy wrote:
> Hi,
>
> On Thu, Mar 16, 2017 at 11:05:20PM +1000, Nicholas Piggin wrote:
>> On Thu, 16 Mar 2017 18:10:48 +0530
>> Mahesh Jagannath Salgaonkar wrote:
>>
>>> On 03/14/2017 02:53 PM, Nicholas Piggin wrote:
The ISA specifies power save wakeup can
* Michael Ellerman [2017-03-20 14:05:39]:
> Vaidyanathan Srinivasan writes:
>
> > * Michael Neuling [2017-03-18 16:28:02]:
> >
> >> Vaidy,
> >>
> >> Thanks for fixing this.
> >>
> >> > drv->cpumask defaults to cpu_possible_mask in __cpuidle_driver_init().
> >> > This breaks cpuidle on powern
Vaidyanathan Srinivasan writes:
> * Michael Neuling [2017-03-18 16:28:02]:
>
>> Vaidy,
>>
>> Thanks for fixing this.
>>
>> > drv->cpumask defaults to cpu_possible_mask in __cpuidle_driver_init().
>> > This breaks cpuidle on powernv where sysfs files are not created for
>> > cpus in cpu_possibl
On 07/03/17 21:57, christophe lombard wrote:
@@ -281,7 +212,6 @@ void cxl_handle_fault(struct work_struct
*fault_work)
if (!ctx->kernel) {
mm = get_mem_context(ctx);
-/* indicates all the thread in task group have exited */
if (mm == NULL) {
pr_devel("
Reviewed-by: Andrew Donnellan
On 14/03/17 22:08, Christophe Lombard wrote:
The two fields pid and tid of the structure cxl_irq_info are only used
in the guest environment. To avoid confusion, it's not necessary
to fill the fields in the bare-metal environment.
The PSL Process and Thread Identif
As we start supporting larger address space (>128TB), we want to give
architecture a control on max task size of an application which is different
from the TASK_SIZE. For ex: ppc64 needs to track the base page size of a segment
and it is copied from mm_context_t to PACA on each context switch. If w
Not all user space application is ready to handle wide addresses. It's known
that
at least some JIT compilers use higher bits in pointers to encode their
information. It collides with valid pointers with 512TB addresses and
leads to crashes.
To mitigate this, we are not going to allocate virtual
---
arch/powerpc/mm/hugetlbpage-radix.c | 4 ++--
arch/powerpc/mm/mmap.c | 12 ++--
arch/powerpc/mm/slice.c | 6 +++---
arch/powerpc/mm/subpage-prot.c | 3 ++-
4 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/mm/hugetlbpage-radi
Hi Linus,
Please pull a couple of minor powerpc fixes for 4.11:
The following changes since commit fb5fe0fd626c425ed41842c4318aa7ab6f3c2db7:
Merge tag 'powerpc-4.11-4' of
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux (2017-03-13
19:48:22 -0700)
are available in the git reposit
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