Hi,
Le 28/07/2017 à 07:01, Aneesh Kumar K.V a écrit :
With commit aa888a74977a8 ("hugetlb: support larger than MAX_ORDER") we added
support for allocating gigantic hugepages via kernel command line. Switch
ppc64 arch specific code to use that.
W.r.t FSL support, we now limit our allocation rang
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/lpar.c | 35 ++-
1 file changed, 30 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/powerpc/platforms/pseries/lpar.c
index 436ec1e725d3..0275b357dca0 100644
---
arch/powerpc/platforms/pseries/lpar.c | 51 +--
1 file changed, 31 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/powerpc/platforms/pseries/lpar.c
index 04a9618f3b79..436ec1e725d3 100644
--- a/arch/powerpc/platforms/ps
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/lpar.c | 24
1 file changed, 24 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/powerpc/platforms/pseries/lpar.c
index bfab61d17f6d..04a9618f3b79 100644
--- a/arch/powerpc/platfor
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/lpar.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/powerpc/platforms/pseries/lpar.c
index e28e62f6afba..bfab61d17f6d 100644
--- a/arch/powerpc/platforms/p
This is equivalent to H_BULK_REMOVE hcall, but then takes hash value as the arg
instead of hashpte slot number. We will use this later to speed up bulk remove
operation in guest. Instead of finding slot number using H_READ4 hcall, we can
use hash value directly using this hcall.
only support H_AVP
This is equivalent to H_PROTECT hcall, but then takes hash value as the arg
instead of hashpte slot number. We will use this later to speed up invalidate
operation in guest. Instead of finding slot number using H_READ4 hcall, we can
use hash value directly using this hcall.
H_AVPN flag value is ne
This is equivalent to H_REMOVE hcall, but then takes hash value as the arg
instead of hashpte slot number. We will use this later to speed up invalidate
operation in guest. Instead of finding slot number using H_READ4 hcall, we can
use hash value directly using this hcall.
Only support flag value
We will use this feature to check whether hypervisor implements hash based
remove and protect hcalls
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/firmware.h | 3 ++-
arch/powerpc/kvm/powerpc.c| 4
arch/powerpc/platforms/pseries/firmware.c | 1 +
include
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/kvm/book3s_hv_rm_mmu.c | 9 -
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index fedb0139524c..5abaed27708b 100644
--- a/arch/powerpc/kvm/book3s_hv_
Now that we have updated all MMU hash operations to work with hash value instead
of slot, remove slot tracking completely. We also remove real_pte because
without slot tracking 4k, 64k and 64k subpages all have similar pte format.
One of the side effect of this is, we now don't track whether we ha
Add hash based updatepp callback and use that during hash pte fault.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 6 +
arch/powerpc/mm/hash64_4k.c | 7 +
arch/powerpc/mm/hash64_64k.c | 17 +++-
arch/power
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hash_native_64.c | 28
arch/powerpc/platforms/pseries/lpar.c | 13 -
2 files changed, 12 insertions(+), 29 deletions(-)
diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hash_utils_64.c | 32 +---
1 file changed, 5 insertions(+), 27 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index a02570b4cfed..66f12b48f838 100644
--- a/arch/powerpc/mm
Add hash based invalidate callback and use that in flush_hash_page.
Note: In a later patch, we will drop the slot tracking completely. At that point
we will also loose the __rpte_sub_valid() check in
pte_iterate_hashed_subpages(). That means we call the invalidate for all
subpages irrespective of w
We will use this in later patch.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/ps3/htab.c | 37 +
1 file changed, 37 insertions(+)
diff --git a/arch/powerpc/platforms/ps3/htab.c
b/arch/powerpc/platforms/ps3/htab.c
index cc2b281a3766..255b7a33fef
The helper now also does secondary hash search so that we can use this in other
functions.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/lpar.c | 28 +---
1 file changed, 17 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/l
The helper now also does a secondary hash search so that we can use this in
other
functions.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hash_native_64.c | 70 +++-
1 file changed, 40 insertions(+), 30 deletions(-)
diff --git a/arch/powerpc/mm/hash_n
Hi,
This patch series removes hash pte slot tracking in linux page table.
This free up 4 bits from linux page table and brings the hash and radix
linux page table closer. The series also attempt remove __real_pte_t
because without slot tracking 4k subpage and 64k page , pte formats
are similar.
Hi Nick,
> POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
>
> A solution is to set then clear MMCRA[60] after wake from state-loss
> idle.
Looks good.
Acked-by: Anton Blanchard
Anton
> Signed-off-by: Nicholas Piggin
> ---
> arch/powerpc/kernel/idle_book3s.S | 8 +++
On Mon, 2017-07-31 at 20:04 +1000, Michael Ellerman wrote:
> Scott Wood writes:
>
> > On Sat, 2017-07-29 at 22:52 +0300, Sergei Shtylyov wrote:
> > > of_irq_to_resource() has recently been fixed to return negative error
> > > #'s
> > > along with 0 in case of failure, however the Freescale MPC8
On Mon, Jul 24, 2017 at 02:07:51PM -0500, Brijesh Singh wrote:
> From: Tom Lendacky
>
> In order for memory pages to be properly mapped when SEV is active, we
> need to use the PAGE_KERNEL protection attribute as the base protection.
> This will insure that memory mapping of, e.g. ACPI tables, re
On Tue, 1 Aug 2017 21:08:49 +0200
christophe leroy wrote:
> Le 01/08/2017 à 13:25, Balbir Singh a écrit :
> > Add support for set_memory_xx routines. With the STRICT_KERNEL_RWX
> > feature support we got support for changing the page permissions
> > for pte ranges. This patch adds support for bot
Daniel Axtens writes:
> Hi Matt,
>
>> The raid6 Q syndrome check has been optimised using the vpermxor
>> instruction.
>
> Very much a nit, but normally we'd write the change that the patch makes
> as a command: "Optimise the raid6 Q syndrome generation using the
> vpermxor instruction" - see
> h
Daniel Axtens writes:
> Hi Matt,
>
>> --- a/lib/raid6/test/Makefile
>> +++ b/lib/raid6/test/Makefile
>> @@ -44,10 +44,12 @@ else ifeq ($(HAS_NEON),yes)
>> CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
>> else
>> HAS_ALTIVEC := $(shell printf '\#include \nvector int
>> a;\n' |\
>> -
On Tue, 1 Aug 2017 22:00:53 +1000
Nicholas Piggin wrote:
> diff --git a/arch/powerpc/kernel/watchdog.c b/arch/powerpc/kernel/watchdog.c
> index b67f8b03a32d..4b9a567c9975 100644
> --- a/arch/powerpc/kernel/watchdog.c
> +++ b/arch/powerpc/kernel/watchdog.c
> @@ -204,6 +204,9 @@ void soft_nmi_inte
Michael Ellerman wrote:
> -Original Message-
> From: Michael Ellerman [mailto:m...@ellerman.id.au]
> Sent: Monday, July 31, 2017 6:37 PM
> To: Qiang Zhao ; o...@buserror.net
> Cc: valentin.longch...@keymile.com; linuxppc-dev@lists.ozlabs.org; linux-
> ker...@vger.kernel.org
> Subject: RE
On Tue, Aug 1, 2017 at 10:44 PM, Segher Boessenkool
wrote:
> Hi!
>
> On Mon, Jul 31, 2017 at 10:58:22AM +1000, Matt Brown wrote:
>> @@ -1049,6 +1065,10 @@ int analyse_instr(struct instruction_op *op, struct
>> pt_regs *regs,
>> do_cmp_unsigned(regs, val, val2, rd >> 2);
>>
Oh, one final thing - I just realised there's a .gitignore file in
lib/raid6/.gitignore that needs to be updated to include the vpermxor
generated files. That should be part of this patch.
Regards,
Daniel
Hi Matt,
> The raid6 Q syndrome check has been optimised using the vpermxor
> instruction.
Very much a nit, but normally we'd write the change that the patch makes
as a command: "Optimise the raid6 Q syndrome generation using the
vpermxor instruction" - see
https://www.kernel.org/doc/html/v4.11/p
Hi Matt,
> --- a/lib/raid6/test/Makefile
> +++ b/lib/raid6/test/Makefile
> @@ -44,10 +44,12 @@ else ifeq ($(HAS_NEON),yes)
> CFLAGS += -DCONFIG_KERNEL_MODE_NEON=1
> else
> HAS_ALTIVEC := $(shell printf '\#include \nvector int
> a;\n' |\
> - gcc -c -x c -
Le 01/08/2017 à 13:25, Balbir Singh a écrit :
Add support for set_memory_xx routines. With the STRICT_KERNEL_RWX
feature support we got support for changing the page permissions
for pte ranges. This patch adds support for both radix and hash
so that we can change their permissions via set/clear
On Mon, Jul 31, 2017 at 04:27:57PM +0100, Jonathan Cameron wrote:
> On Mon, 31 Jul 2017 08:04:11 -0700
> "Paul E. McKenney" wrote:
>
> > On Mon, Jul 31, 2017 at 12:08:47PM +0100, Jonathan Cameron wrote:
> > > On Fri, 28 Jul 2017 12:03:50 -0700
> > > "Paul E. McKenney" wrote:
> > >
> > > > On
Michael Ellerman writes:
> Thiago Jung Bauermann writes:
>> Ram Pai writes:
> ...
>>> +
>>> + /* We got one, store it and use it from here on out */
>>> + if (need_to_set_mm_pkey)
>>> + mm->context.execute_only_pkey = execute_only_pkey;
>>> + return execute_only_pkey;
>>> +}
>>
On 08/01/2017 12:55 AM, Michael Ellerman wrote:
> Jens Axboe writes:
> ...
>>
>> Can you try the below fix? Should be more palatable than the previous
>> one. Brian, maybe you can take a look at the IRQ issue mentioned above?
>
> Given the patch from Brian fixed the lockdep warning, do you still
Fixes the following lockdep warning that can occur when scsi-mq is enabled
with ipr due to ipr calling scsi_unblock_requests from irq context. The fix
is to move the call to scsi_unblock_requests to ipr's existing workqueue.
stack backtrace:
CPU: 28 PID: 0 Comm: swapper/28 Not tainted 4.13.0-rc2-g
On 08/01/2017 11:05 AM, Nathan Fontenot wrote:
On 08/01/2017 04:59 AM, Michael Ellerman wrote:
Daniel Henrique Barboza writes:
Commit 943db62c316c ("powerpc/pseries: Revert 'Auto-online
hotplugged memory'") reverted the auto-online feature for pseries due
to problems with LMB removals not u
Hi Naveen,
On Tue, Aug 01, 2017 at 12:10:24PM +0530, Naveen N. Rao wrote:
> On 2017/07/31 02:22PM, Breno Leitao wrote:
> > If tracing is enabled and you get into xmon, the tracing buffer
> > continues to be updated, causing possible loss of data due to buffer
> > overflow and unnecessary tracing i
On 08/01/2017 04:59 AM, Michael Ellerman wrote:
> Daniel Henrique Barboza writes:
>
>> Commit 943db62c316c ("powerpc/pseries: Revert 'Auto-online
>> hotplugged memory'") reverted the auto-online feature for pseries due
>> to problems with LMB removals not updating the device struct properly.
>> A
If the decrementer wraps and de-asserts the decrementer exception while
hard-disabled, __check_irq_replay has a test to notice the wrap when
interrupts are re-enabled.
The decrementer check must be done when clearing the PACA_IRQ_HARD_DIS
flag, not when the PACA_IRQ_DEC flag is tested. Previously
On Mon, Jul 31, 2017 at 07:10:15PM +1000, Michael Ellerman wrote:
> And ___PPC_RA() is not quite right. The L field is only 2 bits wide, not
> the 5 that ___PPC_RA() allows.
>
> We don't have a __PPC_L() macro, because L fields vary in size and
> location. So I think you're best of open coding it,
Hi!
On Mon, Jul 31, 2017 at 10:58:22AM +1000, Matt Brown wrote:
> @@ -1049,6 +1065,10 @@ int analyse_instr(struct instruction_op *op, struct
> pt_regs *regs,
> do_cmp_unsigned(regs, val, val2, rd >> 2);
> goto instr_done;
>
> + case 508: /
Em 2017-07-20 18:21, Benjamin Herrenschmidt escreveu:
On Thu, 2017-07-20 at 14:57 -0300, Victor Aoqui wrote:
When CONFIG_PREEMPT=y, the following warning shows up:
BUG: using smp_processor_id() in preemptible [] code:
swapper/0/1
caller is pseries_processor_idle_init+0x58/0x21c
This
This adds an irq counter for the watchdog soft-NMI. This interrupt
only fires when interrupts are soft-disabled, so it will not
increment much even when the watchdog is running. However it's
useful for debugging and sanity checking.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/har
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/hardirq.h | 1 +
arch/powerpc/kernel/irq.c | 6 ++
arch/powerpc/kernel/traps.c| 2 ++
arch/powerpc/kernel/watchdog.c | 3 +++
4 files changed, 12 insertions(+)
diff --git a/arch/powerpc/include/asm/hardirq.h
b/
The powerpc kernel/watchdog.o should be built when HARDLOCKUP_DETECTOR
and HAVE_HARDLOCKUP_DETECTOR_ARCH are both selected. If only the former
is selected, then the generic perf watchdog has been selected.
To simplify this check, introduce a new Kconfig symbol PPC_WATCHDOG that
depends on both. Th
---
arch/powerpc/kernel/traps.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index bfcfd9ef09f2..5adfea2dc822 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -755,7 +755,14 @@ void machine_check_e
This is the same as the last patch, but broken out and in the
process of making ifdefs nicer, also found and fixed a watchdog
build bug in patch 2.
Patches 1-2 are fixes that should go to 4.13.
Patches 3-4 are probably simple enough they could also go to 4.13.
Nicholas Piggin (4):
powerpc/64s:
Signed-off-by: Balbir Singh
---
arch/powerpc/net/bpf_jit_comp64.c | 13 +
1 file changed, 1 insertion(+), 12 deletions(-)
diff --git a/arch/powerpc/net/bpf_jit_comp64.c
b/arch/powerpc/net/bpf_jit_comp64.c
index 861c5af..d81110e 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/ar
Signed-off-by: Balbir Singh
---
arch/powerpc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b5b8ba8..7be710d 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -165,6 +165,7 @@ config PPC
select HAVE_ARCH_MMAP_RND
Add support for set_memory_xx routines. With the STRICT_KERNEL_RWX
feature support we got support for changing the page permissions
for pte ranges. This patch adds support for both radix and hash
so that we can change their permissions via set/clear masks.
A new helper is required for hash (hash__
After implementing STRICT_KERNEL_RWX, it turns out that implementing
set_memory_ro/rw/x/nx is quite easy. The first patch is applied on
top (http://patchwork.ozlabs.org/patch/795745/).
The first patch implements the various routines, the second patch
enables ARCH_HAS_SET_MEMORY for PPC_BOOK3S_64 a
"Gautham R. Shenoy" writes:
>
> Subject: [v3 PATCH 1/2] powernv/powerpc:Save/Restore additional SPRs for
> stop4 cpuidle
I know it's not a big deal, but can we agree on the subject format?
powerpc/powernv: Save/Restore additional SPRs for stop4 cpuidle
cheers
Sorry - accidental send. No content!
Jonathan
On Mon, 31 Jul 2017 12:55:48 +0100
Jonathan Cameron wrote:
> On Mon, 31 Jul 2017 12:09:08 +0100
> Jonathan Cameron wrote:
>
> > On Wed, 26 Jul 2017 16:15:05 -0700
> > "Paul E. McKenney" wrote:
> >
> > > On Wed, Jul 26, 2017 at 03:45:40PM -07
On 64-bit book3s, with the hash MMU, we currently define the kernel
virtual space (vmalloc, ioremap etc.), to be 16T in size. This is a
leftover from pre v3.7 when our user VM was also 16T.
Of that 16T we split it 50/50, with half used for PCI IO and ioremap
and the other 8T for vmalloc.
We never
There is a comment in slb_allocate() referring to the load of
paca->vmalloc_sllp, but it's several lines prior in the assembly.
We're about to change this code, and we want to add another comment,
so move the comment immediately prior to the instruction it's talking
about.
Signed-off-by: Michael E
Currently KERN_IO_START is defined as:
#define KERN_IO_START (KERN_VIRT_START + (KERN_VIRT_SIZE >> 1))
Although it looks like a constant, both the components are actually
variables, to allow us to have a different value between Radix and
Hash with a single kernel.
However that still requires b
On Mon, 31 Jul 2017 12:09:08 +0100
Jonathan Cameron wrote:
> On Wed, 26 Jul 2017 16:15:05 -0700
> "Paul E. McKenney" wrote:
>
> > On Wed, Jul 26, 2017 at 03:45:40PM -0700, David Miller wrote:
> > > From: "Paul E. McKenney"
> > > Date: Wed, 26 Jul 2017 15:36:58 -0700
> > >
> > > > And wi
Daniel Henrique Barboza writes:
> Commit 943db62c316c ("powerpc/pseries: Revert 'Auto-online
> hotplugged memory'") reverted the auto-online feature for pseries due
> to problems with LMB removals not updating the device struct properly.
> Among other things, this commit made the following change
From: Shilpasri G Bhat
> Sent: 31 July 2017 08:43
> In P9, OCC (On-Chip-Controller) supports shared memory based
> commad-response interface. Within the shared memory there is an OPAL
^ typo
> command buffer and OCC response buffer that can be used to send
> inband commands to OCC. The follow
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