On Wed, 2012-12-05 at 11:07 +1100, Anton Blanchard wrote:
> Hi Ben,
>
> > My only potential objection was that it might have been cleaner to
> > actually build prom_init.c as a separate binary alltogether and piggy
> > back it...
>
> Yeah, I went through a number of options before settling on thi
On Wed, 2012-12-05 at 10:31 +0800, Yuanquan Chen wrote:
> On powerpc arch, some fixup work of PCI/PCI-e device is just done during the
> first scan at booting time. For the PCI/PCI-e device rescanned after linux OS
> booting up, the fixup work won't be done, which leads to dma_set_mask error or
> i
Hello.
Ive been trying to understand how an hash PTE is updated. Im on a PPC970MP
machine which using the IBM PowerPC 604e core. My Linux version is 2.6.10 (I
am sorry I cannot migrate at the moment. Management issues and I can't help
:-(( )
Now onto the problem:
hpte_update is invoked to sync t
Hi Tang,
On 2012/12/5 10:07, Tang Chen wrote:
> Hi Wu,
>
> On 12/04/2012 08:20 PM, Jianguo Wu wrote:
> (snip)
>>>
>>> Seems that we have different ways to handle pages allocated by bootmem
>>> or by regular allocator. Is the checking way in [PATCH 09/12] available
>>> here ?
>>>
>>> +/* boot
On powerpc arch, some fixup work of PCI/PCI-e device is just done during the
first scan at booting time. For the PCI/PCI-e device rescanned after linux OS
booting up, the fixup work won't be done, which leads to dma_set_mask error or
irq related issue in rescanned PCI/PCI-e device's driver. So, it
Hi Wu,
On 12/04/2012 08:20 PM, Jianguo Wu wrote:
(snip)
Seems that we have different ways to handle pages allocated by bootmem
or by regular allocator. Is the checking way in [PATCH 09/12] available
here ?
+/* bootmem page has reserved flag */
+if (PageReserved(page)) {
..
+}
Hi Ben,
> My only potential objection was that it might have been cleaner to
> actually build prom_init.c as a separate binary alltogether and piggy
> back it...
Yeah, I went through a number of options before settling on this one.
Move prom_init.c into arch/powerpc/boot
Pros:
- 32 bit enviro
On 12/04/2012 05:53:33 AM, Sethi Varun-B16395 wrote:
> -Original Message-
> From: Wood Scott-B07421
> Sent: Monday, December 03, 2012 10:34 PM
> To: Sethi Varun-B16395
> Cc: Joerg Roedel; linux-ker...@vger.kernel.org; iommu@lists.linux-
> foundation.org; Wood Scott-B07421; linuxppc-dev@
On Tue, 2012-12-04 at 19:12 +1100, Alexey Kardashevskiy wrote:
> On 04/12/12 04:35, Alex Williamson wrote:
> > On Mon, 2012-12-03 at 13:52 +1100, Alexey Kardashevskiy wrote:
> >> This patch initializes IOMMU groups based on the IOMMU
> >> configuration discovered during the PCI scan on POWERNV
> >>
On Nov 28, 2012, at 11:34 AM, Kumar Gala wrote:
>
> On Nov 27, 2012, at 8:34 PM, Chen Yuanquan-B41889 wrote:
>
>> On 11/25/2012 08:41 PM, Kumar Gala wrote:
>>> On Nov 22, 2012, at 10:29 PM, Yuanquan Chen wrote:
>>>
On powerpc arch, dma_ops of rescanned pci device after system's booting up
On Tue, 2012-12-04 at 22:02 +1100, Stephen Rothwell wrote:
> > +config ARCH_USE_BUILTIN_BSWAP
> > + def_bool y
> > +
>
> This should be defined as bool in arch/Kconfig (probably in the previous
> patch) and then selected from appropriate architectures.
Thanks. Updated series at
git://git.
Sethi Varun-B16395 wrote:
> This would in any case change with the new LIODN allocation scheme. I
> intend on introducing the new scheme as a separate patch.
At the very least, you should detect when an LIODN is too large and print
an error message.
--
Timur Tabi
Linux kernel developer at Free
Hi Tang,
Thanks for your review and comments, Please see below for my reply.
On 2012/12/4 17:13, Tang Chen wrote:
> Hi Wu,
>
> Sorry to make noise here. Please see below. :)
>
> On 12/03/2012 10:23 AM, Jianguo Wu wrote:
>> Signed-off-by: Jianguo Wu
>> Signed-off-by: Jiang Liu
>> ---
>> inclu
> -Original Message-
> From: Tabi Timur-B04825
> Sent: Tuesday, December 04, 2012 1:33 AM
> To: Sethi Varun-B16395
> Cc: joerg.roe...@amd.com; io...@lists.linux-foundation.org; linuxppc-
> d...@lists.ozlabs.org; linux-ker...@vger.kernel.org; Wood Scott-B07421
> Subject: Re: [PATCH 4/4 v6]
> -Original Message-
> From: Wood Scott-B07421
> Sent: Monday, December 03, 2012 10:34 PM
> To: Sethi Varun-B16395
> Cc: Joerg Roedel; linux-ker...@vger.kernel.org; iommu@lists.linux-
> foundation.org; Wood Scott-B07421; linuxppc-dev@lists.ozlabs.org; Tabi
> Timur-B04825
> Subject: Re: [P
Hi David,
On Tue, 4 Dec 2012 10:15:28 + David Woodhouse wrote:
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index a902a5c..b4ea516 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -78,6 +78,9 @@ config ARCH_HAS_ILOG2_U64
> bool
> default y i
On 12/04/2012 05:22 PM, Tang Chen wrote:
On 11/27/2012 06:00 PM, Wen Congyang wrote:
offlining memory blocks and checking whether memory blocks are offlined
are very similar. This patch introduces a new function to remove
redundant codes.
CC: David Rientjes
CC: Jiang Liu
CC: Len Brown
CC: Chris
From: David Woodhouse
By using the compiler intrinsics instead of hand-crafted opaque inline
assembler for byte-swapping, we let the compiler see what's actually
happening and it gets to use lwbrx/stwbrx instructions instead of a
normal load/store coupled with a sequence of rlwimi instructions to
From: David Woodhouse
Currently depends only on CONFIG_MATOM. This will change because big-core
CPUs are getting movbe too...
Signed-off-by: David Woodhouse
---
arch/x86/Kconfig.cpu | 4
arch/x86/Makefile| 1 +
2 files changed, 5 insertions(+)
diff --git a/arch/x86/Kconfig.cpu b/arch
From: David Woodhouse
Since GCC 4.4, there have been __builtin_bswap32() and __builtin_bswap16()
intrinsics. A __builtin_bswap16() came a little later (4.6 for PowerPC,
48 for other platforms).
By using these instead of the inline assembler that most architectures
have in their __arch_swabXX() m
This series of patches enables the __builtin_bswapXX() series of functions
that have been supported since GCC 4.4. It allows GCC to emit load-and-swap
or store-and-swap instructions on architectures which support that.
--
David WoodhouseOpen Source Technology Centre
da
From: David Woodhouse
With -mmovbe enabled (implicit with -march=atom), this allows the
compiler to use the movbe instruction. This doesn't have a significant
effect on code size (unlike on PowerPC), because the movbe instruction
actually takes as many bytes to encode as a simple mov and a bswap.
On 11/27/2012 06:00 PM, Wen Congyang wrote:
We call hotadd_new_pgdat() to allocate memory to store node_data. So we
should free it when removing a node.
CC: David Rientjes
CC: Jiang Liu
CC: Len Brown
CC: Benjamin Herrenschmidt
CC: Paul Mackerras
CC: Christoph Lameter
Cc: Minchan Kim
CC: Andrew M
On 11/27/2012 06:00 PM, Wen Congyang wrote:
This patch introduces a new function try_offline_node() to
remove sysfs file of node when all memory sections of this
node are removed. If some memory sections of this node are
not removed, this function does nothing.
CC: David Rientjes
CC: Jiang Liu
C
On 11/27/2012 06:00 PM, Wen Congyang wrote:
From: Yasuaki Ishimatsu
When a memory is added, we update zone's and pgdat's start_pfn and
spanned_pages in the function __add_zone(). So we should revert them
when the memory is removed.
The patch adds a new function __remove_zone() to do this.
CC:
On 11/27/2012 06:00 PM, Wen Congyang wrote:
static int __remove_section(struct zone *zone, struct mem_section *ms)
{
unsigned long flags;
@@ -330,9 +317,9 @@ static int __remove_section(struct zone *zone, struct
mem_section *ms)
pgdat_resize_lock(pgdat,&flags);
sparse
On 11/27/2012 06:00 PM, Wen Congyang wrote:
From: Yasuaki Ishimatsu
Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if
we use SPARSEMEM_VMEMMAP, we can unregister the memory_section.
So the patch add unregister_memory_section() into __remove_section().
CC: David Rientje
On 11/27/2012 06:00 PM, Wen Congyang wrote:
For removing memory, we need to remove page table. But it depends
on architecture. So the patch introduce arch_remove_memory() for
removing page table. Now it only calls __remove_pages().
Note: __remove_pages() for some archtecuture is not implemented
On 11/27/2012 06:00 PM, Wen Congyang wrote:
offlining memory blocks and checking whether memory blocks are offlined
are very similar. This patch introduces a new function to remove
redundant codes.
CC: David Rientjes
CC: Jiang Liu
CC: Len Brown
CC: Christoph Lameter
Cc: Minchan Kim
CC: Andrew Mo
On 11/27/2012 06:00 PM, Wen Congyang wrote:
From: Yasuaki Ishimatsu
We remove the memory like this:
1. lock memory hotplug
2. offline a memory block
3. unlock memory hotplug
4. repeat 1-3 to offline all memory blocks
5. lock memory hotplug
6. remove memory(TODO)
7. unlock memory hotplug
All mem
On 11/27/2012 06:00 PM, Wen Congyang wrote:
memory can't be offlined when CONFIG_MEMCG is selected.
For example: there is a memory device on node 1. The address range
is [1G, 1.5G). You will find 4 new directories memory8, memory9, memory10,
and memory11 under the directory /sys/devices/system/me
Hi Wu,
Sorry to make noise here. Please see below. :)
On 12/03/2012 10:23 AM, Jianguo Wu wrote:
Signed-off-by: Jianguo Wu
Signed-off-by: Jiang Liu
---
include/linux/mm.h |1 +
mm/sparse-vmemmap.c | 231 +++
mm/sparse.c |3 +-
On 04/12/12 04:35, Alex Williamson wrote:
On Mon, 2012-12-03 at 13:52 +1100, Alexey Kardashevskiy wrote:
This patch initializes IOMMU groups based on the IOMMU
configuration discovered during the PCI scan on POWERNV
(POWER non virtualized) platform. The IOMMU groups are
to be used later by VFIO
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