ing the MAC address in a long in struct ibmveth_adapter.
It's never used so remove it - we don't need another place in the
driver where we create endian issues with MAC addresses.
Reported-by: Alexander Graf
Signed-off-by: Anton Blanchard
---
diff --git a/drivers/net/ethernet/ibm/ibm
Hi Michael,
> > To try and catch any screw ups in our ppc64 memcpy and
> > copy_tofrom_user loops, I wrote a quick test:
> >
> > http://ozlabs.org/~anton/junkcode/validate_kernel_copyloops.tar.gz
>
> Nice! How's this look?
Love it!
At the moment my other copy_to/from_user tests run against the
- we don't need another place in the
driver where we create endian issues with MAC addresses.
Signed-off-by: Anton Blanchard
Reviewed-by: Alexander Graf
---
v2: annotate with __be64 as suggested by Joe
diff --git a/drivers/net/ethernet/ibm/ibmveth.c
b/drivers/net/ethernet/ibm/ibmve
00.00%
inode_cache 14 MB 100.00%
kmalloc-256 14 MB 97.81%
kmalloc-8192 14 MB 85.71%
Signed-off-by: Anton Blanchard
---
Thoughts? It seems like we could hit a similar situation if a machine
is balanced but we run out of memory on a single node.
Index: b/mm/s
Hi Andi,
> > Thoughts? It seems like we could hit a similar situation if a
> > machine is balanced but we run out of memory on a single node.
>
> Yes I agree, but your patch doesn't seem to attempt to handle this?
It doesn't. I was hoping someone with more mm knowledge than I could
suggest a li
Hi David,
> Why not just delete the entire test?
> Presumably some time a little earlier no local memory was available.
> Even if there is some available now, it is very likely that some won't
> be available again in the near future.
I agree, the current behaviour seems strange but it has been a
Hi Wanpeng,
> >+if (node_spanned_pages(node)) {
>
> s/node_spanned_pages/node_present_pages
Thanks, I hadn't come across node_present_pages() before.
Anton
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We expose a number of OF properties in the kexec and crash dump code
and these need to be big endian.
Cc: sta...@vger.kernel.org # v3.13
Signed-off-by: Anton Blanchard
--
diff --git a/arch/powerpc/kernel/machine_kexec.c
b/arch/powerpc/kernel/machine_kexec.c
index 75d4f73..015ae55 100644
--- a
Hi Michael,
> Not my favourite colour :D What about this instead?
>
> We could also add of_property_read_u32(), with an implied index of
> zero?
>
> I don't like the rc handling, but couldn't come up with anything I
> liked better.
Thanks for pointing that out, I didn't realise we had so man
Hi Vasant,
> +static void free_dump_sg_list(struct opal_sg_list *list)
> +{
> + struct opal_sg_list *sg1;
> + while (list) {
> + sg1 = list->next;
> + kfree(list);
> + list = sg1;
> + }
> + list = NULL;
> +}
> +
> +/*
> + * Build dump buffer sca
n
We still have some local symbol resolution issues that will be
fixed in a subsequent patch.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/include/asm/vdso.h b/arch/powerpc/include/asm/vdso.h
index 0d9cecd..c53f5f6 100644
--- a/arch/powerpc/include/asm/vdso.h
+++ b/arch/po
apage
3.20% test[.] main
2.92% test[.] 0037.plt_call.gettimeofday@@GLIBC_2.18
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/kernel/vdso32/vdso32_wrapper.S
b/arch/powerpc/kernel/vdso32/vdso32_wrapper.S
index 6e8f507..37
The 64bit relocation code places a few symbols in the text segment.
These symbols are only 4 byte aligned where they need to be 8 byte
aligned. Add an explicit alignment.
Signed-off-by: Anton Blanchard
Cc: sta...@vger.kernel.org
---
diff --git a/arch/powerpc/kernel/reloc_64.S b/arch/powerpc
ibmveth_adapter.
It's never used so remove it - we don't need another place in the
driver where we create endian issues with MAC addresses.
Signed-off-by: Anton Blanchard
Cc: sta...@vger.kernel.org
---
Index: b/drivers/net/ethernet/ibm
I noticed this when testing setarch. No, we don't magically
support a big endian userspace on a little endian kernel.
Signed-off-by: Anton Blanchard
Cc: sta...@vger.kernel.org # v3.10+
---
diff --git a/arch/powerpc/include/asm/compat.h
b/arch/powerpc/include/asm/compat.h
index 84
bridge module which is heavily used in
KVM setups.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/configs/ppc64_defconfig
b/arch/powerpc/configs/ppc64_defconfig
index e015896..f26b267 100644
--- a/arch/powerpc/configs/ppc64_defconfig
+++ b/arch/powerpc/configs/ppc64_defconfig
Hi,
I was testing KVM on an upstream kernel (3.14.0-rc6-00145-ga4ecdf8)
with Gregory's emulated MMIO fixes.
I ran with 16 cores and 4 threads (matches the host):
qemu-system-ppc64 -enable-kvm -smp cores=16,threads=4 -m 32G -M pseries -cpu
POWER7 -nographic -nodefaults -monitor stdio -serial pt
-off-by: Anton Blanchard
Cc: sta...@vger.kernel.org
---
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 17fc949..7a25d92 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -86,7 +86,7 @@ static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu
Hi Vasant,
> On 02/09/2014 02:50 AM, Anton Blanchard wrote:
> >
> > Hi Vasant,
> >
> >> +static void free_dump_sg_list(struct opal_sg_list *list)
> >> +{
> >> + struct opal_sg_list *sg1;
> >> + while (list) {
> >> + s
Hi Cody,
hv-24x7: could not obtain capabilities, error 0x
fffe, not enabling
hv-gpci: could not obtain capabilities, error 0x
fffe, not enabling
arted using modules. It would be
nice to avoid a stack frame in the common (tracepoints disabled)
case, but we may end up having to allocate one.
Anton
--
Anton Blanchard (21):
powerpc: No need to use dot symbols when branching to a function
powerpc: Remove superflous function descripto
There is no need to create a function descriptor for the system call
table. By using one we force the system call table into the text
section and it really belongs in the rodata section.
This also removes another use of dot symbols.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel
descriptor
so we can replace it with a label and remove the dot symbol.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/entry_64.S | 10 +-
arch/powerpc/kernel/exceptions-64s.S | 18 +-
arch/powerpc/kernel/head_64.S | 9
There is no need to create a function descriptor for functions
called locally out of assembly.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/exceptions-64e.S | 4 ++--
arch/powerpc/kernel/exceptions-64s.S | 2 +-
arch/powerpc/kernel/head_64.S| 12 ++--
3 files changed
Now there are no users of _INIT_GLOBAL(), _STATIC() and _INIT_STATIC()
we can remove them.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 38 --
1 file changed, 38 deletions(-)
diff --git a/arch/powerpc/include/asm/ppc_asm.h
b/arch
STD_EXCEPTION_COMMON, STD_EXCEPTION_COMMON_ASYNC and
MASKABLE_EXCEPTION branch to the handler, so we can remove
the explicit dot symbol and binutils will do the right thing.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/exceptions-64e.S | 8 +++
arch/powerpc/kernel/exceptions
There are a few places we have to use dot symbols with the
current ABI - the syscall table and the kvm hcall table.
Wrap both of these with a new macro called DOTSYM so it will
be easy to transition away from dot symbols in a future ABI.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include
ABIv2 doesn't have function descriptors or dot symbols. One
new thing it does add is a function global and a local entry
point, so add that to our _GLOBAL macro.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ftrace.h | 2 ++
arch/powerpc/include/asm/linkage.h | 2 ++
To establish addressability quickly, ABIv2 requires the target
address of the function being called to be in r12. Fix a number of
places in assembly code that we do indirect function calls.
We need to avoid function descriptors on ABIv2 too.
Signed-off-by: Anton Blanchard
---
arch/powerpc
The linker fixes up TOC. relocations, so prom_init_check.sh should
ignore them.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/prom_init_check.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/prom_init_check.sh
b/arch/powerpc/kernel
Skip over the well known global entry point code for ABIv2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/code-patching.h | 40
1 file changed, 36 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm/code-patching.h
b/arch/powerpc
Replace FUNCTION_TEXT with ppc_function_entry which can handle both
ABIv1 and ABIv2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/mm/hash_utils_64.c | 18 --
1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm
Change how we setup registers for ret_from_kernel_thread. In
ABIv1, instead of passing a function descriptor in, dereference
it and pass the target in directly.
Use ppc_global_function_entry to get it right on both ABIv1 and ABIv2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel
ABIs.
Signed-off-by: Anton Blanchard
---
arch/powerpc/mm/hash_low_64.S | 36
arch/powerpc/mm/hash_utils_64.c | 20 +---
arch/powerpc/mm/slb.c | 12 ++--
arch/powerpc/mm/slb_low.S | 12
4 files change
Fix STK_PARAM and use it instead of hardcoding ABIv1 offsets.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 4
arch/powerpc/lib/copypage_power7.S | 8
arch/powerpc/lib/copyuser_power7.S | 24
arch/powerpc/lib/memcpy_64.S
routine is not performance critical.
Signed-off-by: Ulrich Weigand
Signed-off-by: Anton Blanchard
---
arch/powerpc/lib/copypage_power7.S | 8
arch/powerpc/lib/copyuser_power7.S | 24
arch/powerpc/lib/memcpy_64.S | 8
Get rid of the tm specific STACK_PARAM and use STK_PARAM
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/tm.S | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index ef47bcb..db02e84 100644
--- a/arch/powerpc
The r2 TOC/GOT save offset is 40 on ABIv1 and 24 on ABIv2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 2 ++
arch/powerpc/kernel/tm.S | 8
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm/ppc_asm.h
b/arch
TRACE_WITH_FRAME_BUFFER creates 32 byte stack frames. On ppc64
ABIv1 this is too small and a callee could corrupt the stack by
writing to the parameter save area (starting at offset 48).
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/irqflags.h | 4 ++--
1 file changed, 2
There is no need to put a function descriptor in
__secondary_hold_spinloop. Use ppc_function_entry to get the
instruction address and put it in __secondary_hold_spinloop instead.
Also fix an issue where we assumed cur_cpu_spec held a function
descriptor.
Signed-off-by: Anton Blanchard
---
arch
Don't try and dereference a function descriptor on ABIv2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/sections.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/sections.h
b/arch/powerpc/include/asm/sections.h
index d0e784e..d1bb96d 100644
From: Rusty Russell
By representing them as words, rather than chars, we can avoid
endian ifdefs.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 42 +++--
1 file changed, 11 insertions(+), 31 deletions(-)
diff --git a/arch/powerpc/kernel
From: Rusty Russell
Signed-off-by: Rusty Russell
---
arch/powerpc/include/uapi/asm/elf.h | 5 -
arch/powerpc/kernel/module_64.c | 8
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/uapi/asm/elf.h
b/arch/powerpc/include/uapi/asm/elf.h
index 7
From: Rusty Russell
For the ELFv2 ABI, powerpc introduces a magic symbol ".TOC.". depmod
then complains that this doesn't resolve (so does modpost, but we could
easily fix that). To export this, we need to use asm.
modpost and depmod both strip "." from symbols for the old PPC64 ELFv1
ABI, so
From: Rusty Russell
For the ELFv2 ABI, powerpc introduces a magic symbol ".TOC.". If we
don't create a CRC for it (minus the leading ".", since we strip that)
we get a modpost warning about missing CRC and the CRC array seems to
be displaced by 1 so other CRCs mismatch too.
Signed-off-by: Rusty
From: Rusty Russell
The kernel resolved the '.TOC.' to a fake symbol, so we need to fix it up
to point to our .toc section plus 0x8000.
Signed-off-by: Rusty Russell
---
arch/powerpc/include/asm/module.h | 1 +
arch/powerpc/kernel/module_64.c | 29 +
2 files chang
From: Rusty Russell
The new ELF ABI tends to use R_PPC64_REL16_LO and R_PPC64_REL16_HA
relocations (PC-relative), so implement them.
Signed-off-by: Rusty Russell
---
arch/powerpc/include/uapi/asm/elf.h | 7 ++-
arch/powerpc/kernel/module_64.c | 17 +
2 files changed, 2
From: Rusty Russell
ELFv2 doesn't use function descriptors, so we don't expect symbols to
start with ".". But because depmod and modpost strip ".", and we have
the special symbol ".TOC.", we still need to do it.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 3 ++-
1 file
From: Rusty Russell
ELFv2 uses a different stack offset (24 vs 40) to save r2.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 23 +++
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/mod
From: Rusty Russell
In ELFv2, r12 is supposed to equal to PC on entry to a function.
Our stubs use r11, so change swap that with r12.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/ker
From: Rusty Russell
ELFv2 doesn't need to set up r2 when calling a function.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 22 --
1 file changed, 16 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module
From: Rusty Russell
ELFv2 doesn't use function descriptors, because it doesn't need to
load a new r2 when calling into a function. On the other hand, you're
supposed to use a local entry point for R_PPC_REL24 branches.
Signed-off-by: Rusty Russell
---
arch/powerpc/kernel/module_64.c | 73
Build the little endian ppc64 kernel with ABIv2 if the toolchain
supports it. We can identify an ABIv2 capable toolchain by the
-mabi=elfv2 compiler flag.
Signed-off-by: Anton Blanchard
---
arch/powerpc/Makefile | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch
Hi Uli,
> You probably should have two different macros _GLOBAL_TOC vs. _GLOBAL
> (or _GLOBAL vs. _GLOBAL_NOTOC), and use the variant that provides a
> global entry point setting up the TOC only with those functions that
> actually require a TOC.
I was worried that we might introduce subtle bugs
el free to add:
Tested-by: Anton Blanchard
Anton
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Using size_t in our APIs is asking for trouble, especially
when some OPAL calls use size_t pointers.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/include/asm/opal.h
===
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch
We had some duplication of the internal OPAL functions.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/include/asm/opal.h
===
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -877,7 +877,8
The bitmap in opal_poll_events and opal_handle_interrupt is
big endian, so we need to byteswap it on little endian builds.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/platforms/powernv/opal.c
===
--- a/arch/powerpc
Fix little endian issues with the OPAL error log code.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/platforms/powernv/opal-elog.c
===
--- a/arch/powerpc/platforms/powernv/opal-elog.c
+++ b/arch/powerpc/platforms
Hi Stewart,
> Do we also need any magic for the getting of error logs themselves?
>
> You may want to check the md5 of the logs themselves on be and le.
Good idea. An md5 of the logs in LE and BE on this box checks out, so I
think we are good.
Anton
Byteswap struct opal_msg in one place instead of requiring all the
callers to do it.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/include/asm/opal.h
===
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include
One OPAL call and one device tree property needed byte swapping.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/platforms/powernv/opal-sensor.c
===
--- a/arch/powerpc/platforms/powernv/opal-sensor.c
+++ b/arch/powerpc
OPAL defines opal_msg as a big endian struct so we have to
byte swap it on little endian builds.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/include/asm/opal.h
===
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch
One OPAL call and one device tree property needed byte swapping.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/platforms/powernv/opal-sensor.c
===
--- a/arch/powerpc/platforms/powernv/opal-sensor.c
+++ b/arch/powerpc
Recent CPUs support quad word load and store instructions. Add
support to the alignment handler for them.
Signed-off-by: Anton Blanchard
---
Index: b/arch/powerpc/include/asm/emulated_ops.h
===
--- a/arch/powerpc/include/asm
to load:
# cat /proc/modules | wc -l
3830
It survived a fair bit of poking (enabling/disabling function tracers
etc).
Anton Blanchard (7):
powerpc: Add _GLOBAL_TOC for ABIv2 assembly functions exported to
modules
powerpc: ftrace_caller, _mcount is exported to modules so needs
If an assembly function that calls back into c code is exported to
modules, we need to ensure r2 is setup correctly. There are only
two places crazy enough to do it (two of which are my fault).
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 12
arch/powerpc
When testing the ftrace function tracer, I realised that ftrace_caller
and mcount are called from modules and they both call into C, therefore
they need the ABIv2 global entry point to establish r2.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/entry_64.S | 7 ++-
1 file changed, 2
ftrace has way too much knowledge of our kernel module trampoline
layout hidden inside it. Create is_module_trampoline() that can
abstract this away inside the module loader code.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/module.h | 1 +
arch/powerpc/kernel/module_64.c | 51
Use ppc_function_entry in places where we previously assumed
function descriptors exist.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/kprobes.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/kprobes.h
b/arch/powerpc/include/asm
ftrace has way too much knowledge of our kernel module trampoline
layout hidden inside it. Create module_trampoline_target() that gives
the target address of a kernel module trampoline.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/module.h | 2 ++
arch/powerpc/kernel/module_64.c
Now we have is_module_trampoline() and module_trampoline_target()
we can remove a bunch of intimate kernel module trampoline
knowledge from ftrace.
Signed-off-by: Anton Blanchard
---
arch/powerpc/kernel/ftrace.c | 97 +---
1 file changed, 20 insertions
__ftrace_make_call assumed ABIv1 TOC stack offsets, so it
broke on ABIv2.
While we are here, we can simplify the instruction modification
code. Since we always update one instruction there is no need to
probe_kernel_write and flush_icache_range, just use patch_branch.
Signed-off-by: Anton
les with an error like:
> nf_conntrack: Unknown ADD relocation: 109
>
> This patch tells the linker to avoid createing R_PPC64_TOCSAVE
> relocations allowing modules to load.
Looks good.
Signed-off-by: Anton Blanchard
> +ifeq ($(call cc-option-yn,-mno-save-toc-indirect),y)
> +
Hi
> That's not much less awful... The message gives 0 informations about
> where it comes from .. what is it that couldn't obtain capabilities ?
Cody is at least using pr_fmt to give some information on what went
wrong:
[1.635040] hv-24x7: not a virtualized system, not enabling
[1.63507
Hi,
I built an allmodconfig kernel last Friday and tried inserting every module.
There were quite a few that oops because they probe ISA space.
Anton
--
Unable to handle kernel paging request for data at address 0xd80001f2
NIP [d3f3ff98] probe_chip_type+0x244/0x11d4 [pata_legacy
I made a cleanup suggestion on 27143b9a0 (powerpc/le: Avoid creatng
R_PPC64_TOCSAVE relocations for modules) that had a stupid typo. Fix
it.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index a9f814a..4c0cedf 100644
--- a/arch/powerpc/Makefile
module_init should return 0 or a negative errno.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 2f3cdb0..658e89d 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -705,7 +705,7
the boot wrapper define unique by calling it
BOOT_COMMAND_LINE_SIZE.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index a28f021..d367a0a 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -139,18 +139,18 @@ static struct
I've had a report that the current limit is too small for
an automated network based installer. Bump it.
Signed-off-by: Anton Blanchard
---
diff --git a/arch/powerpc/include/uapi/asm/setup.h
b/arch/powerpc/include/uapi/asm/setup.h
index 552df83..0516e97 100644
--- a/arch/powerpc/include
Bump the boot wrapper BOOT_COMMAND_LINE_SIZE to match the
kernel.
Signed-off-by: Anton Blanchard
---
We export this in an ELF section so userspace tools can edit it.
We should be safe so long as we are only increasing it shouldn't we?
Index: b/arch/powerpc/boot/
This was enabled on the pseries defconfigs recently, but missed
the ppc64 one.
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/ppc64_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs/ppc64_defconfig
b/arch/powerpc/configs/ppc64_defconfig
index f1c4342
Regenerate defconfigs using make savedefconfig.
Anton Blanchard
---
arch/powerpc/configs/ppc64_defconfig | 11 +--
arch/powerpc/configs/pseries_defconfig| 12 +++-
arch/powerpc/configs/pseries_le_defconfig | 14 +++---
3 files changed, 7 insertions(+), 30
We are starting to see ppc64 boxes with SATA AHCI adapters in it,
so enable it in our defconfigs.
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/ppc64_defconfig | 1 +
arch/powerpc/configs/pseries_defconfig| 1 +
arch/powerpc/configs/pseries_le_defconfig | 1 +
3 files changed
KSM will only be used on areas marked for merging via madvise, and it
is showing nice improvements on KVM workloads, so enable it by
default.
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/ppc64_defconfig | 1 +
arch/powerpc/configs/pseries_defconfig| 1 +
arch/powerpc/configs
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/ppc64_defconfig | 1 +
arch/powerpc/configs/pseries_defconfig| 1 +
arch/powerpc/configs/pseries_le_defconfig | 1 +
3 files changed, 3 insertions(+)
diff --git a/arch/powerpc/configs/ppc64_defconfig
b/arch/powerpc/configs
Enable config options required by lxc and docker.
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/pseries_defconfig| 12
arch/powerpc/configs/pseries_le_defconfig | 12
2 files changed, 24 insertions(+)
diff --git a/arch/powerpc/configs/pseries_defconfig
docker requires CONFIG_NETFILTER_XT_MARK to be enabled.
Unfortunately that means turning on CONFIG_NETFILTER_ADVANCED.
Signed-off-by: Anton Blanchard
---
arch/powerpc/configs/pseries_defconfig| 22 +-
arch/powerpc/configs/pseries_le_defconfig | 22
atomics.
Signed-off-by: Anton Blanchard
---
arch/powerpc/lib/Makefile| 3 +-
arch/powerpc/lib/memcmp_64.S | 233 +++
arch/powerpc/lib/string.S| 2 +
3 files changed, 237 insertions(+), 1 deletion(-)
create mode 100644 arch/powerpc/lib/memcmp_
Add a testcase for the new ppc64 memcmp.
Signed-off-by: Anton Blanchard
---
.../testing/selftests/powerpc/stringloops/Makefile | 21 +
.../selftests/powerpc/stringloops/asm/ppc_asm.h| 7 ++
.../selftests/powerpc/stringloops/memcmp_64.S | 1 +
.../selftests/powerpc/stringloops
ns we might
take multiple PMU exceptions per second per hardware thread even
if our hard lockup timeout is 10 seconds.
It can be enabled via a boot option, or via procfs.
Signed-off-by: Anton Blanchard
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/nmi.h | 4
HAVE_PERF_EVENTS_NMI is used for two things - the oprofile NMI timer
and the hardlockup detector.
Create HAVE_OPROFILE_NMI_TIMER so an architecture can select them
separately. On ppc64 we want to add the hardlockup detector, but not
the oprofile NMI timer fallback.
Signed-off-by: Anton Blanchard
Hi Jason,
> > diff --git a/arch/powerpc/platforms/pseries/lpar.c
> > b/arch/powerpc/platforms/pseries/lpar.c index 469751d..14ac1ad
> > 100644 --- a/arch/powerpc/platforms/pseries/lpar.c
> > +++ b/arch/powerpc/platforms/pseries/lpar.c
> > @@ -27,6 +27,7 @@
> > #include
> > #include
> > #inclu
HAVE_PERF_EVENTS_NMI is used for two things - the oprofile NMI timer
and the hard lockup detector.
Create HAVE_OPROFILE_NMI_TIMER so an architecture can select them
separately. On ppc64 we want to add the hard lockup detector, but not
the oprofile NMI timer fallback.
Signed-off-by: Anton
Hi Arnd,
> Would it help to also add a way for an architecture to override
> memcmp_pages() with its own implementation? That way you could
> skip the unaligned part, hardcode the loop counter and avoid the
> preempt_disable() in kmap_atomic().
Good idea. We could also have a generic implementati
Hi Robert,
> I also don't see a reason, why you don't want to support oprofile NMI
> timer. Is there any?
I couldn't come up with a case where it would be a benefit to us. We
roll out PMU support for a new CPU early so that the kernel and tools
support it when we GA. On the other hand adding opro
Hi,
> > ebizzy with -S 30 -t 1 -P gave
> > 13627 records/s -> Without patch
> > 13546 records/s -> With patch with tracepoint disabled
>
> OK. So that's about -0.6%. Are we happy with that? I'm not sure.
>
> Can you do a few more runs and see if that's a stable result.
Surprisingly large. Is CO
Hi Aneesh,
> yes. We do use jump label. I also verified that looking at .s
>
> #APP
> # 23 "./arch/powerpc/include/asm/jump_label.h" 1
> 1:
> nop
> .pushsection __jump_table, "aw"
> .llong 1b, .L201, __tracepoint_hash_fault+8 #,
> .popsection
>
> #
VMX register definitions - the kernel uses vrX whereas both gcc and
glibc use vX.
Change the kernel to match userspace.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 64 +++---
arch/powerpc/include/uapi/asm/ptrace.h | 2 +-
arch/powerpc
VSX register definitions - the kernel uses vsrX whereas gcc uses
vsX.
Change the kernel to match userspace.
Signed-off-by: Anton Blanchard
---
arch/powerpc/include/asm/ppc_asm.h | 128 ++---
arch/powerpc/lib/ldstfp.S | 6 +-
2 files changed, 67 insertions
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