On the PCI plugging event, PCI slot's subordinate devices are
scanned and their (IO and MMIO) resources are assigned. Platform
dependent resources (PE#, IO/MMIO/DMA windows) are allocated or
created on updating windows of the slot's upstream bridge.
This updates the windows of the hot plugged slot
The pdn (struct pci_dn) instances are allocated from memblock or
bootmem when creating PCI controller (hoses) in setup_arch(). PCI
hotplug, which will be supported by proceeding patches, releases
PCI device nodes and their corresponding pdn on unplugging event.
The memory chunks for pdn instances a
This adds standalone driver to support PCI hotplug for PowerPC PowerNV
platform that runs on top of skiboot firmware. The firmware identifies
hotpluggable slots and marked their device tree node with proper
"ibm,slot-pluggable" and "ibm,reset-by-firmware". The driver scans
device tree nodes to crea
This supports releasing PEs dynamically. A reference count is
introduced to PE representing number of PCI devices associated
with the PE. The reference count is increased when PCI device
joins the PE and decreased when PCI device leaves the PE in
pnv_pci_release_device(). When the count becomes zer
The (OPAL) firmware might provide the PCI slot reset capability
which is identified by property "ibm,reset-by-firmware" on the
PCI slot associated device node.
This routes the reset request to firmware if "ibm,reset-by-firmware"
exists in the PCI slot device node. Otherwise, the reset is done
insi
Currently, the PEs and their associated resources are assigned in
ppc_md.pcibios_fixup() except those used by SRIOV VFs. The function
is called for once after PCI probing and resources assignment is
completed. So it's obviously not hotplug friendly.
This creates PEs dynamically in pcibios_setup_br
There is no parent bridge for root bus, meaning pcibios_setup_bridge()
isn't invoked for root bus. The PE for root bus is the ancestor of
other PEs in PELTV. It means we need PE for root bus populated before
all others.
This populates the PE for root bus in pcibios_setup_bridge() path
if it's not
PE number for one particular PE can be allocated dynamically or
reserved according to the consumed M64 (64-bits prefetchable)
segments of the PE. The M64 segment can't be remapped to arbitrary
PE, meaning the PE number is determined according to the index
of the consumed M64 segment. As below figur
Each PHB maintains an array helping to translate 2-bytes Request
ID (RID) to PE# with the assumption that PE# takes one byte, meaning
that we can't have more than 256 PEs. However, pci_dn->pe_number
already had 4-bytes for the PE#.
This extends the PE# capacity for every PHB. After that, the PE nu
The macro defined in arch/powerpc/platforms/powernv/pci.c isn't
used by anyone. Just remove it.
Signed-off-by: Gavin Shan
---
arch/powerpc/platforms/powernv/pci.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci.c
b/arch/powerpc/platforms/powernv/pci.c
in
Currently, PowerPC PowerNV platform utilizes ppc_md.pcibios_fixup(),
which is called for once after PCI probing and resource assignment
are completed, to allocate platform required resources for PCI devices:
PE#, IO and MMIO mapping, DMA address translation (TCE) table etc.
Obviously, it's not hotp
This series of patches need corresponding changes in firmware side to
fully function. Without the firmware changes, the PCI hotplug driver
won't detect and populate any PCI slots. So the code changes are compatible
to old firmware. The firmware patches can be found from:
https://patchwork.ozlab
This overrides pcibios_setup_bridge() that is called to update PCI
bridge windows when PCI resource assignment is completed, to assign
PE and setup various (resource) mapping for the PE in subsequent
patches.
Signed-off-by: Gavin Shan
Reviewed-by: Alexey Kardashevskiy
---
arch/powerpc/include/a
On 19/05/16 18:24, PaX Team wrote:
the earlier plugin capable gcc versions used to install gcc headers in a
somewhat
ad-hoc manner resulting in compile time breakage for plugins and since some of
those potentially missing headers are target specific, each target arch should
be verified before en
On 05/20/2016 10:55 AM, Paul Mackerras wrote:
> On Tue, May 03, 2016 at 01:54:36PM +0530, Shreyas B. Prabhu wrote:
>> POWER ISA v3 defines a new idle processor core mechanism. In summary,
>> a) new instruction named stop is added. This instruction replaces
>> instructions like nap, sleep, r
Hi Arnd,
Any comments?
Please reply when you see the email since we want this eSDHC issue to be fixed
soon.
All the patches are Freescale-specific and is to fix the eSDHC driver.
Could we let them merged first if you were talking about a new way of
abstracting getting SoC version.
Thanks :)
On Tue, May 03, 2016 at 01:54:36PM +0530, Shreyas B. Prabhu wrote:
> POWER ISA v3 defines a new idle processor core mechanism. In summary,
> a) new instruction named stop is added. This instruction replaces
> instructions like nap, sleep, rvwinkle.
> b) new per thread SPR named PSSCR is add
On Tue, May 03, 2016 at 01:54:31PM +0530, Shreyas B. Prabhu wrote:
> In the current code, when the thread wakes up in reset vector, some
> of the state restore code and check for whether a thread needs to
> branch to kvm is duplicated. Reorder the code such that this
> duplication is avoided.
This
On Thu, May 19, 2016 at 4:15 PM, Josh Poimboeuf wrote:
> On Mon, May 02, 2016 at 08:52:41AM -0700, Andy Lutomirski wrote:
>> On Mon, May 2, 2016 at 6:52 AM, Josh Poimboeuf wrote:
>> > On Fri, Apr 29, 2016 at 05:08:50PM -0700, Andy Lutomirski wrote:
>> >> On Apr 29, 2016 3:41 PM, "Josh Poimboeuf"
Use kmemdup when some other buffer is immediately copied into allocated
region. It replaces call to allocation followed by memcpy, by a single
call to kmemdup.
Signed-off-by: Muhammad Falak R Wani
---
drivers/net/ethernet/toshiba/ps3_gelic_wireless.c | 4 ++--
1 file changed, 2 insertions(+), 2
On Mon, May 02, 2016 at 08:52:41AM -0700, Andy Lutomirski wrote:
> On Mon, May 2, 2016 at 6:52 AM, Josh Poimboeuf wrote:
> > On Fri, Apr 29, 2016 at 05:08:50PM -0700, Andy Lutomirski wrote:
> >> On Apr 29, 2016 3:41 PM, "Josh Poimboeuf" wrote:
> >> >
> >> > On Fri, Apr 29, 2016 at 02:37:41PM -070
On Thu, May 19, 2016 at 12:38:47PM -0700, Paul E. McKenney wrote:
> On Thu, May 19, 2016 at 09:23:39AM -0700, Paul E. McKenney wrote:
> > On Thu, May 19, 2016 at 08:40:42AM -0700, Josh Triplett wrote:
> > > On Thu, May 19, 2016 at 07:10:13AM -0700, Paul E. McKenney wrote:
> > > > On Wed, May 18, 20
On Thu, May 19, 2016 at 09:23:39AM -0700, Paul E. McKenney wrote:
> On Thu, May 19, 2016 at 08:40:42AM -0700, Josh Triplett wrote:
> > On Thu, May 19, 2016 at 07:10:13AM -0700, Paul E. McKenney wrote:
> > > On Wed, May 18, 2016 at 09:23:10PM -0700, Josh Triplett wrote:
> > > > On Thu, May 19, 2016
The comment explaining why we modify VRSAVE is misleading, glibc
does rely on the behaviour. Update the comment.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S
index 1c2e7a3..3907fcf 100644
--- a/arch/powerpc/kernel/vector.S
+++ b/arch
PowerISA 3.0 adds an in memory table for storing segment translation
information. In this mode, which is enabled by setting both HOST RADIX
and GUEST RADIX bits in partition table to 0 and enabling UPRT to
1, we have a per process segment table. The segment table details
are stored in the process t
We also handle fault with proper stack initialized. This enable us to
callout to C in fault handling routines. We don't do this for kernel
mapping, because of the possibility of taking recursive fault if kernel
stack in not yet mapped by an slb entry.
This enable us to handle Power9 slb fault bett
On Thu, May 19, 2016 at 08:40:42AM -0700, Josh Triplett wrote:
> On Thu, May 19, 2016 at 07:10:13AM -0700, Paul E. McKenney wrote:
> > On Wed, May 18, 2016 at 09:23:10PM -0700, Josh Triplett wrote:
> > > On Thu, May 19, 2016 at 11:42:23AM +0800, Boqun Feng wrote:
> > > > The option "-soundhw pcspk"
On Thu, May 19, 2016 at 07:10:13AM -0700, Paul E. McKenney wrote:
> On Wed, May 18, 2016 at 09:23:10PM -0700, Josh Triplett wrote:
> > On Thu, May 19, 2016 at 11:42:23AM +0800, Boqun Feng wrote:
> > > The option "-soundhw pcspk" gives me a error on PPC as follow:
> > >
> > > qemu-system-ppc64: ISA
This will allow device drivers to consistently use io{read,write}XX
also for 64-bit accesses.
Acked-by: Michael Ellerman
Signed-off-by: Horia Geantă
---
arch/powerpc/kernel/iomap.c | 24
1 file changed, 24 insertions(+)
diff --git a/arch/powerpc/kernel/iomap.c b/arch/p
Signed-off-by: Anju T
---
Documentation/features/debug/optprobes/arch-support.txt | 2 +-
arch/powerpc/Kconfig| 1 +
arch/powerpc/kernel/Makefile| 1 +
3 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/featu
ppc_get_optinsn_slot() and ppc_free_optinsn_slot() are
geared towards the allocation and freeing of memory from
the area reserved for detour buffer.
Signed-off-by: Anju T
---
arch/powerpc/kernel/optprobes.c | 480
1 file changed, 480 insertions(+)
creat
Detour buffer contains instructions to create an in memory pt_regs.
After the execution of prehandler a call is made for instruction emulation.
The NIP is decided after the probed instruction is executed. Hence a branch
instruction is created to the NIP returned by emulate_step().
Instruction slot
Here are the RFC patchset of the kprobes jump optimization
(a.k.a OPTPROBES)for powerpc. Kprobe being an inevitable tool
for kernel developers,enhancing the performance of kprobe has
got much importance.
Currently kprobes inserts a trap instruction to probe a running kernel.
Jump optimization allo
Hi Shreyas,
On Wed, May 18, 2016 at 12:37:56PM +0530, Shreyas B Prabhu wrote:
[..snip..]
> >> diff --git a/arch/powerpc/kernel/exceptions-64s.S
> >> b/arch/powerpc/kernel/exceptions-64s.S
> >> index 7716ceb..7ebfbb0 100644
> >> --- a/arch/powerpc/kernel/exceptions-64s.S
> >> +++ b/arch/powerpc/k
On Thu, May 19, 2016 at 1:40 PM, Peter Zijlstra wrote:
> On Wed, May 18, 2016 at 11:11:51PM +0200, Rafael J. Wysocki wrote:
>> On Wed, May 18, 2016 at 2:53 PM, Shilpasri G Bhat
>> wrote:
>> > This patch adds driver callback for fast_switch and below observations
>> > on schedutil governor are don
On Tue, May 03, 2016 at 01:54:34PM +0530, Shreyas B. Prabhu wrote:
> Move idle related macros to a common location asm/cpuidle.h so that
> they can be used for stop instruction support.
>
> Signed-off-by: Shreyas B. Prabhy
Reviewed-by: Gautham R. Shenoy
--
Thanks and Regards
gautham.
On Wed, May 18, 2016 at 12:21:17PM +0530, Shreyas B Prabhu wrote:
> With this patch, r5 which is the third parameter to
> power_powersave_common contains the return address that needs to be
> written to SRR0. So here I'm keeping r5 unaltered and using r7 for the MSR.
Ok.
Reviewed-by: Gautham R. S
On Wed, May 18, 2016 at 09:25:17PM -0700, Josh Triplett wrote:
> On Thu, May 19, 2016 at 11:42:20AM +0800, Boqun Feng wrote:
> > I spend some time to make tools/testing/selftest/rcutorture run on PPC,
> > here are some documention and fixes made while I was trying.
> >
> > The scripts are able to
On Wed, May 18, 2016 at 09:23:10PM -0700, Josh Triplett wrote:
> On Thu, May 19, 2016 at 11:42:23AM +0800, Boqun Feng wrote:
> > The option "-soundhw pcspk" gives me a error on PPC as follow:
> >
> > qemu-system-ppc64: ISA bus not available for pcspk
> >
> > , which means this option doesn't work
On Thursday 19 May 2016 15:03:34 Kishon Vijay Abraham I wrote:
> >
> >> 1 drivers/phy/phy-exynos-mipi-video.c:238:13: warning: 'val' may be
> >> used uninitialized in this function [-Wmaybe-uninitialized]
> >
> > I sent a patch on May 11, it was reviewed by Krzysztof Kozlowski, but not
>
On Thursday 19 May 2016 11:20:44 Michal Hocko wrote:
> On Thu 19-05-16 11:07:09, Arnd Bergmann wrote:
> [...]
> > > 6 mm/page_alloc.c:3651:6: warning: 'compact_result' may be used
> > > uninitialized in this function [-Wmaybe-uninitialized]
> >
> > I'm surprised this one is still there, I s
On Thu, May 19, 2016 at 04:27:49PM +0530, abdhalee wrote:
>Hi
>
>Today's mainline stable 4.6 on ppc64le bare metal booted with the following
>warning.
>
>[0.080615] EEH: PowerNV platform initialized
>[0.080709] POWER8 performance monitor hardware support registered
>[0.080791] power8-pm
On Mon, 2016-05-16 at 20:37 -0500, Scott Wood wrote:
> Sorry for the lateness...
>
> Contains include 86xx fixes, minor device tree fixes, an erratum
> workaround, and a kconfig dependency fix.
Thanks, merged into next and pushed.
Will send a pull request to Linus late tomorrow once the whole a
On Wed, May 18, 2016 at 11:11:51PM +0200, Rafael J. Wysocki wrote:
> On Wed, May 18, 2016 at 2:53 PM, Shilpasri G Bhat
> wrote:
> > This patch adds driver callback for fast_switch and below observations
> > on schedutil governor are done with this patch.
> >
> > In POWER8 there is a regression obs
On 19 May 2016 at 16:22, Michael Ellerman wrote:
> On Wed, 2016-05-18 at 12:33 +0200, Emese Revfy wrote:
> > Did you test the plugins with all gcc versions (4.5-6)?
>
> What's the concern about gcc versions? Just not breaking the build on old
> compilers?
the earlier plugin capable gcc versions
On Thu, 19 May 2016, Arnd Bergmann wrote:
> > 2 drivers/xen/balloon.c:154:13: warning: 'release_memory_resource'
> > declared 'static' but never defined [-Wunused-function]
>
> I sent a patch on May 11, subject "xen: remove incorrect forward declaration"
> and
> Stefano Stabellini reviewed
Hi Arnd,
On Thursday 19 May 2016 02:37 PM, Arnd Bergmann wrote:
> On Thursday 19 May 2016 00:45:16 Olof's autobuilder wrote:
>> Errors:
>>
>> arm64.allmodconfig:
>> samples/seccomp/bpf-fancy.c:13:27: fatal error: linux/seccomp.h: No such
>> file or directory
>> samples/seccomp/dropper.c:2
On Thu 19-05-16 11:07:09, Arnd Bergmann wrote:
[...]
> > 6 mm/page_alloc.c:3651:6: warning: 'compact_result' may be used
> > uninitialized in this function [-Wmaybe-uninitialized]
>
> I'm surprised this one is still there, I sent a patch but Michal Hocko came
> up with
> a better fix on Ma
On Thursday 19 May 2016 00:45:16 Olof's autobuilder wrote:
> Errors:
>
> arm64.allmodconfig:
> samples/seccomp/bpf-fancy.c:13:27: fatal error: linux/seccomp.h: No such file
> or directory
> samples/seccomp/dropper.c:20:27: fatal error: linux/seccomp.h: No such file
> or directory
> sampl
This should be same as flush_tlb_page except for hash32. For hash32
I guess the existing code is wrong, because we don't seem to be
flushing tlb for Hash != 0 case at all. Fix this by switching to
calling flush_tlb_page() which does the right thing by flushing
tlb for both hash and nohash case with
Use flush_hugetlb_page instead of flush_tlb_page when we clear flush the
pte.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/hugetlb.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/hugetlb.h
b/arch/powerpc/include/asm/hugetlb.h
index
Some archs like ppc64 need to do special things when flushing tlb for
hugepage. Add a new helper to flush hugetlb tlb range. This helps us to
avoid flushing the entire tlb mapping for the pid.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h | 2 ++
arch/p
Use the helper instead of open coding the same at multiple place
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/hugetlb-radix.h | 15 +++
.../powerpc/include/asm/book3s/64/tlbflush-radix.h | 4 +--
arch/powerpc/mm/hugetlbpage-radix.c| 29 ++---
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h | 10 +-
arch/powerpc/mm/hugetlbpage-radix.c | 4 ++--
arch/powerpc/mm/tlb-radix.c | 16
3 files changed, 15 insertions(+), 15 deletions(-)
di
Instead of flushing the entire mm, implement a flush_pmd_tlb_range
Signed-off-by: Aneesh Kumar K.V
---
.../powerpc/include/asm/book3s/64/tlbflush-radix.h | 4 ++
arch/powerpc/include/asm/book3s/64/tlbflush.h | 9
arch/powerpc/mm/pgtable-book3s64.c | 4 +-
arch/powerp
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/tlb.h | 13 +
arch/powerpc/mm/tlb-radix.c| 6 --
arch/powerpc/mm/tlb_nohash.c | 6 --
3 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/include/asm/tlb.h b/arch/powerpc/include/asm
Hi,
This patch series introduce range based tlb flush and use the same for radix
implementation. We still need to handle the mmu_gather related tlb flush.
That will be done in a later patch.
Aneesh Kumar K.V (7):
powerpc/mm: Use hugetlb flush functions
powerpc/mm: Drop multiple definition of
MMU feature bits are defined such that we use the lower half to
present MMU family features. Remove the strict split of half and
also move Radix to a mmu family feature. Radix introduce a new MMU
model and strictly speaking it is a new MMU family. This also free
up bits which can be used for indivi
PowerISA 3.0 encodes the segment size in the second half of hash page
table entry. Update hpte_decode accordingly.
Fixes: 50de596de8be ("powerpc/mm/hash: Add support for Power9 Hash")
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hash_native_64.c | 5 -
1 file changed, 4 insertions(+)
Update the PID switch as per ISA doc. slbia is needed in radix to
invalidate any implementation specific lookaside information
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/mmu_context_book3s64.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/mmu_co
Replace opencoding of the same at multiple places with the helper.
No functional change with this patch.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 9 +
arch/powerpc/include/asm/kvm_book3s_64.h | 3 +--
arch/powerpc/mm/hash_native_64.c
ISA 3.0 document hash table size in bytes = 2^(HTABSIZE + 18)
No functionality change by this patch.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/hash_utils_64.c | 9 -
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm
LPCR cannot be updated when running in guest mode.
Signed-off-by: Aneesh Kumar K.V
---
arch/powerpc/mm/pgtable-radix.c | 23 ++-
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 18b2c11604f
Hi Masami,
Thank you for reviewing the patch.
On Wednesday 18 May 2016 08:43 PM, Masami Hiramatsu wrote:
On Wed, 18 May 2016 02:09:37 +0530
Anju T wrote:
Instruction slot for detour buffer is allocated from
the reserved area. For the time being 64KB is reserved
in memory for this purpose. p
On 18.05.2016 12:53, Thomas Huth wrote:
> On 18.05.2016 12:18, Thomas Huth wrote:
>> On 17.05.2016 19:49, Laurent Vivier wrote:
>>>
>>>
>>> On 17/05/2016 10:37, Alexander Graf wrote:
On 05/17/2016 10:35 AM, Laurent Vivier wrote:
>
> On 12/05/2016 16:23, Laurent Vivier wrote:
>>
>>>
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