On Sat, 17 Apr 2021 00:07:23 +0100
"Matthew Wilcox (Oracle)" wrote:
> 32-bit architectures which expect 8-byte alignment for 8-byte integers
> and need 64-bit DMA addresses (arc, arm, mips, ppc) had their struct
> page inadvertently expanded in 2019. When the dma_addr_t was added,
> it forced th
Patch adds initial json/events for POWER10.
Signed-off-by: Kajol Jain
---
.../perf/pmu-events/arch/powerpc/mapfile.csv | 1 +
.../arch/powerpc/power10/cache.json | 47 +++
.../arch/powerpc/power10/floating_point.json | 7 +
.../arch/powerpc/power10/frontend.json| 217 +++
On Fri, Apr 16, 2021 at 5:27 PM Matthew Wilcox wrote:
> diff --git a/include/net/page_pool.h b/include/net/page_pool.h
> index b5b195305346..db7c7020746a 100644
> --- a/include/net/page_pool.h
> +++ b/include/net/page_pool.h
> @@ -198,7 +198,17 @@ static inline void page_pool_recycle_direct(struct
From: Matthew Wilcox
> Sent: 16 April 2021 16:28
>
> On Thu, Apr 15, 2021 at 08:08:32PM +0200, Jesper Dangaard Brouer wrote:
> > See below patch. Where I swap32 the dma address to satisfy
> > page->compound having bit zero cleared. (It is the simplest fix I could
> > come up with).
>
> I think t
Tyrel Datwyler writes:
> On 4/1/21 5:13 PM, Tyrel Datwyler wrote:
>> Currently, neither the vio_bus or vio_driver structures provide support
>> for a shutdown() routine.
>>
>> Add support for shutdown() by allowing drivers to provide a
>> implementation via function pointer in their vio_driver st
Ganesh Goudar writes:
> The error type is ICACHE and DCACHE, for case MCE_ERROR_TYPE_ICACHE.
Do you mean "is ICACHE not DCACHE" ?
cheers
> Signed-off-by: Ganesh Goudar
> ---
> arch/powerpc/platforms/pseries/ras.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/po
From: Grygorii Strashko
> Sent: 16 April 2021 10:27
...
> Sry, for delayed reply.
>
> The TI platforms am3/4/5 (cpsw) and Keystone 2 (netcp) can do only 32bit DMA
> even in case of LPAE
> (dma-ranges are used).
> Originally, as I remember, CONFIG_ARCH_DMA_ADDR_T_64BIT has not been selected
> for
Le 16/04/2021 à 01:49, Alexei Starovoitov a écrit :
On Thu, Apr 15, 2021 at 8:41 AM Quentin Monnet wrote:
2021-04-15 16:37 UTC+0200 ~ Daniel Borkmann
On 4/15/21 11:32 AM, Jianlin Lv wrote:
For debugging JITs, dumping the JITed image to kernel log is discouraged,
"bpftool prog dump jited"
On Sat, Apr 17, 2021 at 12:31:37PM +0200, Arnd Bergmann wrote:
> On Fri, Apr 16, 2021 at 5:27 PM Matthew Wilcox wrote:
> > diff --git a/include/net/page_pool.h b/include/net/page_pool.h
> > index b5b195305346..db7c7020746a 100644
> > --- a/include/net/page_pool.h
> > +++ b/include/net/page_pool.h
On Fri, Apr 16, 2021 at 10:01 PM Masahiro Yamada wrote:
>
> Since commit d9f4ff50d2aa ("kbuild: spilt cc-option and friends to
> scripts/Makefile.compiler"), some kselftests fail to build.
>
> The tools/ directory opted out Kbuild, and went in a different
> direction. They copy any kind of files t
> Hi Konrad,
>
> this series contains a bunch of swiotlb cleanups, mostly to reduce the
> amount of internals exposed to code outside of swiotlb.c, which should
> helper to prepare for supporting multiple different bounce buffer pools.
Somewhere between the 1st and 2nd patch, specifying a specific
On Sat, Apr 17, 2021 at 3:58 PM Matthew Wilcox wrote:
> I wouldn't like to make that assumption. I've come across IOMMUs (maybe
> on parisc? powerpc?) that like to encode fun information in the top
> few bits. So we could get it down to 52 bits, but I don't think we can
> get all the way down t
Hi Matthew,
On Sat, Apr 17, 2021 at 03:45:22AM +0100, Matthew Wilcox wrote:
>
> Replacement patch to fix compiler warning.
>
> From: "Matthew Wilcox (Oracle)"
> Date: Fri, 16 Apr 2021 16:34:55 -0400
> Subject: [PATCH 1/2] mm: Fix struct page layout on 32-bit systems
> To: bro...@redhat.com
> Cc
Hi,
kernel test robot reports:
>> drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of
>> function 'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration]
enable_kernel_fp();
^
when
# CONFIG_PPC_FPU is not set
CONFIG_ALTIVEC=y
I see at least one oth
On Sat, Apr 17, 2021 at 09:32:06PM +0300, Ilias Apalodimas wrote:
> > +static inline void page_pool_set_dma_addr(struct page *page, dma_addr_t
> > addr)
> > +{
> > + page->dma_addr[0] = addr;
> > + if (sizeof(dma_addr_t) > sizeof(unsigned long))
> > + page->dma_addr[1] = addr >> 16 >
Hi Ilias, All,
On 10/04/2021 11:52, Ilias Apalodimas wrote:
+CC Grygorii for the cpsw part as Ivan's email is not valid anymore
Thanks for catching this. Interesting indeed...
On Sat, 10 Apr 2021 at 09:22, Jesper Dangaard Brouer wrote:
On Sat, 10 Apr 2021 03:43:13 +0100
Matthew Wilcox wrot
This patch series enables VAS / NX-GZIP on powerVM which allows
the user space to do copy/paste with the same existing interface
that is available on powerNV.
VAS Enablement:
- Get all VAS capabilities using H_QUERY_VAS_CAPABILITIES that are
available in the hypervisor. These capabilities tell
powerNV and pseries drivers register / unregister to the corresponding
VAS code separately. So rename powerNV VAS API register/unregister
functions.
Signed-off-by: Haren Myneni
---
arch/powerpc/include/asm/vas.h | 6 +++---
arch/powerpc/platforms/powernv/vas-api.c | 10 +-
d
Using the same /dev/crypto/nx-gzip interface for both powerNV and
pseries. So this patch creates platforms/book3s/ and moves VAS API
to that directory. The actual functionality is not changed.
Common interface functions such as open, window open ioctl, mmap
and close are moved to arch/powerpc/pl
NX issues an interrupt when sees fault on user space buffer. The
kernel processes the fault by updating CSB. This functionality is
same for both powerNV and pseries. So this patch moves these
functions to common vas-api.c and the actual functionality is not
changed.
Signed-off-by: Haren Myneni
Take task reference when each window opens and drops during close.
This functionality is needed for powerNV and pseries. So this patch
defines the existing code as functions in common book3s platform
vas-api.c
Signed-off-by: Haren Myneni
---
arch/powerpc/include/asm/vas.h | 20 +++
This patch adds HCALLs and other definitions. Also define structs
that are used in VAS implementation on powerVM.
Signed-off-by: Haren Myneni
---
arch/powerpc/include/asm/hvcall.h| 7 ++
arch/powerpc/include/asm/vas.h | 28
arch/powerpc/platforms/pseries/vas.h | 96
pHyp introduces two different type of credits: Default and Quality
of service (QoS).
The total number of default credits available on each LPAR depends
on CPU resources configured. But these credits can be shared or
over-committed across LPARs in shared mode which can result in
paste command fai
This patch adds the following HCALLs which are used to allocate,
modify and deallocate VAS windows.
H_ALLOCATE_VAS_WINDOW: Allocate VAS window
H_DEALLOCATE_VAS_WINDOW: Close VAS window
H_MODIFY_VAS_WINDOW: Setup window before using
Also adds phyp call (H_QUERY_VAS_CAPABILITIES) to get all VAS
c
pHyp provides various VAS capabilities such as GZIP default and QoS
capabilities which are used to determine total number of credits
available in LPAR, maximum window credits, maximum LPAR credits,
whether usermode copy/paste is supported, and etc.
So first retrieve overall vas capabilities usin
This patch adds VAS window allocatioa/close with the corresponding
HCALLs. Also changes to integrate with the existing user space VAS
API and provide register/unregister functions to NX pseries driver.
The driver register function is used to create the user space
interface (/dev/crypto/nx-gzip)
When NX sees a fault on the user space buffer, generates a fault
interrupt and pHyp forwards that interrupt to OS. Then the kernel
makes H_GET_NX_FAULT HCALL to retrieve the fault CRB information.
This patch adds changes to setup IRQ per each window and handles
fault by updating CSB.
Signed-off
pHyp provides GZIP default and GZIP QoS capabilities which gives
the total number of credits are available in LPAR. This patch
creates sysfs entries and exports LPAR credits, the currently used
and the available credits for each feature.
/sys/kernel/vas/VasCaps/VDefGzip: (default GZIP capabiliti
Rename nx-842-pseries.c to nx-common-pseries.c to add code for new
GZIP compression type. The actual functionality is not changed in
this patch.
Signed-off-by: Haren Myneni
---
drivers/crypto/nx/Makefile | 2 +-
drivers/crypto/nx/{nx-842-pseries.c => nx-common-
Changes to create /dev/crypto/nx-gzip interface with VAS register
and to remove this interface with VAS unregister.
Signed-off-by: Haren Myneni
---
drivers/crypto/nx/Kconfig | 1 +
drivers/crypto/nx/nx-common-pseries.c | 9 +
2 files changed, 10 insertions(+)
diff --git a/
phyp provides NX capabilities which gives recommended minimum
compression / decompression length and maximum request buffer size
in bytes.
Changes to get NX overall capabilities which points to the specific
features phyp supports. Then retrieve NXGZIP specific capabilities.
Signed-off-by: Haren
Changes to export the following NXGZIP capabilities through sysfs:
/sys/devices/vio/ibm,compression-v1/NxGzCaps:
min_compress_len /*Recommended minimum compress length in bytes*/
min_decompress_len /*Recommended minimum decompress length in bytes*/
req_max_processed_len /* Maximum number of byt
From: Matthew Wilcox (Oracle)
> Sent: 17 April 2021 00:07
>
> The net page_pool wants to use a magic value to identify page pool pages.
> The best place to put it is in the first word where it can be clearly a
> non-pointer value. That means shifting dma_addr up to alias with ->index,
> which me
From: Matthew Wilcox
> Sent: 17 April 2021 03:45
>
> Replacement patch to fix compiler warning.
...
> static inline dma_addr_t page_pool_get_dma_addr(struct page *page)
> {
> - return page->dma_addr;
> + dma_addr_t ret = page->dma_addr[0];
> + if (sizeof(dma_addr_t) > sizeof(unsigne
On 4/17/21 11:39 AM, Tom Lendacky wrote:
>> Hi Konrad,
>>
>> this series contains a bunch of swiotlb cleanups, mostly to reduce the
>> amount of internals exposed to code outside of swiotlb.c, which should
>> helper to prepare for supporting multiple different bounce buffer pools.
>
> Somewhere be
On Sat, Apr 17, 2021 at 09:13:45PM +, David Laight wrote:
> > struct {/* page_pool used by netstack */
> > - /**
> > -* @dma_addr: might require a 64-bit value on
> > -* 32-bit architectures.
> > -
On Sat, Apr 17, 2021 at 09:18:57PM +, David Laight wrote:
> Ugly as well.
Thank you for expressing your opinion. Again.
HI--
I no longer see this build error.
However:
On 2/27/21 2:24 AM, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
> head: 3fb6d0e00efc958d01c2f109c8453033a2d96796
> commit: 259149cf7c3c6195e6199e045ca988c31d081cab powerpc/32s: On
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