Hi both of Jiri,
On Wed, Jan 13, 2021 at 8:43 PM Jiri Slaby wrote:
>
> On 13. 01. 21, 11:46, Jiri Olsa wrote:
> > On Wed, Jan 13, 2021 at 09:01:28AM +0100, Jiri Slaby wrote:
> >> With LTO, there are symbols like these:
> >> /usr/lib/debug/usr/lib64/libantlr4-runtime.so.4.8-4.8-1.4.x86_64.debug
>
Excerpts from Christophe Leroy's message of January 14, 2021 1:13 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> This moves the common NMI entry and exit code into the interrupt handler
>> wrappers.
>>
>> This changes the behaviour of soft-NMI (watchdog) and HMI interrupts, and
>>
Excerpts from Christophe Leroy's message of January 14, 2021 1:05 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> There is no need for this to be in asm, use the new intrrupt entry wrapper.
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/include/asm/interrupt.h | 7
Excerpts from Christophe Leroy's message of January 14, 2021 12:59 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> This will be used by interrupt entry as well.
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/include/asm/cputime.h | 15 +++
>> arch/power
Excerpts from Christophe Leroy's message of January 14, 2021 12:54 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> There is no need for this to be in asm, use the new intrrupt entry wrapper.
>>
>> Signed-off-by: Nicholas Piggin
>> ---
>> arch/powerpc/include/asm/interrupt.h | 15
Excerpts from Christophe Leroy's message of January 14, 2021 12:50 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> Add context tracking to the system call handler explicitly, and remove
>> _TIF_NOHZ.
>>
>> This saves 35 cycles on gettid system call cost on POWER9 with a
>> CONFIG_N
Excerpts from Christophe Leroy's message of January 14, 2021 12:45 am:
>
>
> Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
>> Add wrapper functions (derived from x86 macros) for interrupt handler
>> functions. This allows interrupt entry code to be written in C.
>
> Looks like you are doing m
Excerpts from Christophe Leroy's message of January 14, 2021 12:25 am:
>
>
> Le 13/01/2021 à 08:31, Nicholas Piggin a écrit :
>> Similar to the previous patch this makes interrupt handler function
>> types more regular so they can be wrapped with the next patch.
>>
>> bad_page_fault and do_break
Excerpts from Christophe Leroy's message of January 14, 2021 12:12 am:
>
>
> Le 13/01/2021 à 08:31, Nicholas Piggin a écrit :
>> The page fault handling still has some complex logic particularly around
>> hash table handling, in asm. Implement this in C instead.
>>
>> Signed-off-by: Nicholas Pig
On Wed, 13 Jan 2021 16:41:16 + Lee Jones wrote:
> Resending the stragglers again.
>
>
> This set is part of a larger effort attempting to clean-up W=1
>
> kern
On Wed, Jan 13, 2021 at 11:13:07AM -0600, Brian King wrote:
> On 1/12/21 6:33 PM, Tyrel Datwyler wrote:
> > On 1/12/21 2:54 PM, Brian King wrote:
> >> On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
> >>> Introduce several new vhost fields for managing MQ state of the adapter
> >>> as well as initial def
With the exception of the few comments I've shared, the rest of this looks
good to me and you can add my:
Reviewed-by: Brian King
Thanks,
Brian
--
Brian King
Power Linux I/O
IBM Linux Technology Center
On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
> @@ -5880,12 +5936,13 @@ static int ibmvfc_probe(struct vio_dev *vdev, const
> struct vio_device_id *id)
>
> shost->transportt = ibmvfc_transport_template;
> shost->can_queue = max_requests;
> + shost->can_queue = (max_requests / nr_scsi
On Wed, Jan 13, 2021 at 06:27:08PM +, Robin Murphy wrote:
>> Can we hook in somewhat lower level in the dma-direct code so that all
>> the remapping in dma-direct can be reused instead of duplicated? That
>> also becomes important if we want to use non-remapping uncached support,
>> e.g. on mi
On 2021-01-13 12:48, Christoph Hellwig wrote:
+#ifdef CONFIG_SWIOTLB
+ if (unlikely(dev->dma_io_tlb_mem))
+ return swiotlb_alloc(dev, size, dma_handle, attrs);
+#endif
Another place where the dma_io_tlb_mem is useful to avoid the ifdef.
-phys_addr_t swiotlb_tbl_map_single(
On 2021-01-13 17:43, Florian Fainelli wrote:
On 1/13/21 7:27 AM, Robin Murphy wrote:
On 2021-01-13 13:59, Nicolas Saenz Julienne wrote:
Hi All,
On Tue, 2021-01-12 at 16:03 -0800, Florian Fainelli wrote:
On 1/5/21 7:41 PM, Claire Chang wrote:
Add the initialization function to create restrict
On 1/13/21 7:27 AM, Robin Murphy wrote:
> On 2021-01-13 13:59, Nicolas Saenz Julienne wrote:
>> Hi All,
>>
>> On Tue, 2021-01-12 at 16:03 -0800, Florian Fainelli wrote:
>>> On 1/5/21 7:41 PM, Claire Chang wrote:
Add the initialization function to create restricted DMA pools from
matching
On 1/12/21 6:33 PM, Tyrel Datwyler wrote:
> On 1/12/21 2:54 PM, Brian King wrote:
>> On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
>>> Introduce several new vhost fields for managing MQ state of the adapter
>>> as well as initial defaults for MQ enablement.
>>>
>>> Signed-off-by: Tyrel Datwyler
>>> --
On Wed, Jan 13, 2021 at 06:40:20AM +, Christophe Leroy wrote:
This is backport for 5.10
(cherry picked from commit 98bf2d3f4970179c702ef64db658e0553bc6ef3a)
When we have VMAP stack, exception prolog 1 sets r1, not r11.
When it is not an RTAS machine check, don't trash r1 because it is
need
On Wed, Jan 13, 2021 at 07:12:44AM +, Christophe Leroy wrote:
From: Mathieu Desnoyers
Backport for 4.9 and 4.14
(cherry picked from commit d85be8a49e733dcd23674aa6202870d54bf5600d)
The placeholder for instruction selection should use the second
argument's operand, which is %1, not %0. Thi
Fixes the following W=1 kernel build warning(s):
drivers/net/ethernet/toshiba/ps3_gelic_net.c:1107: warning: Function parameter
or member 'irq' not described in 'gelic_card_interrupt'
drivers/net/ethernet/toshiba/ps3_gelic_net.c:1107: warning: Function parameter
or member 'ptr' not described i
Resending the stragglers again.
This set is part of a larger effort attempting to clean-up W=1
kernel builds, which are currently overwhelmingly riddled with
Fixes the following W=1 kernel build warning(s):
from drivers/net/ethernet/ibm/ibmvnic.c:35:
inlined from ‘handle_vpd_rsp’ at drivers/net/ethernet/ibm/ibmvnic.c:4124:3:
drivers/net/ethernet/ibm/ibmvnic.c:1362: warning: Function parameter or member
'hdr_field' not described in 'build_hdr_data'
On 2021-01-13 13:59, Nicolas Saenz Julienne wrote:
Hi All,
On Tue, 2021-01-12 at 16:03 -0800, Florian Fainelli wrote:
On 1/5/21 7:41 PM, Claire Chang wrote:
Add the initialization function to create restricted DMA pools from
matching reserved-memory nodes in the device tree.
Signed-off-by: Cl
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
This moves the common NMI entry and exit code into the interrupt handler
wrappers.
This changes the behaviour of soft-NMI (watchdog) and HMI interrupts, and
also MCE interrupts on 64e, by adding missing parts of the NMI entry to
them.
Signed-o
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 7 +++
arch/powerpc/include/asm/ppc_asm.h | 24
arch/powe
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
This will be used by interrupt entry as well.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/cputime.h | 15 +++
arch/powerpc/kernel/syscall_64.c | 10 +-
2 files changed, 16 insertions(+), 9 deletions(-)
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 15 +++
arch/powerpc/kernel/exceptions-64s.S | 26 --
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
Add context tracking to the system call handler explicitly, and remove
_TIF_NOHZ.
This saves 35 cycles on gettid system call cost on POWER9 with a
CONFIG_NOHZ_FULL kernel.
35 cycles among 100 cycles, or among 5000 cycles ? I meant what pource
Le 13/01/2021 à 08:32, Nicholas Piggin a écrit :
Add wrapper functions (derived from x86 macros) for interrupt handler
functions. This allows interrupt entry code to be written in C.
Looks like you are doing more than just that is this patch. WOuld be worth splitting in several
patches I th
Le 13/01/2021 à 08:31, Nicholas Piggin a écrit :
Similar to the previous patch this makes interrupt handler function
types more regular so they can be wrapped with the next patch.
bad_page_fault and do_break are not performance critical.
It's a bit different between do_break() and bad_page_
Le 13/01/2021 à 08:31, Nicholas Piggin a écrit :
The page fault handling still has some complex logic particularly around
hash table handling, in asm. Implement this in C instead.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 +
arch/powerpc/kernel
Hi All,
On Tue, 2021-01-12 at 16:03 -0800, Florian Fainelli wrote:
> On 1/5/21 7:41 PM, Claire Chang wrote:
> > Add the initialization function to create restricted DMA pools from
> > matching reserved-memory nodes in the device tree.
> >
> > Signed-off-by: Claire Chang
> > ---
> > include/linu
> +#ifdef CONFIG_SWIOTLB
> + if (unlikely(dev->dma_io_tlb_mem))
> + return swiotlb_alloc(dev, size, dma_handle, attrs);
> +#endif
Another place where the dma_io_tlb_mem is useful to avoid the ifdef.
> -phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, phys_addr_t
> orig_ad
> +#ifdef CONFIG_SWIOTLB
> + if (unlikely(swiotlb_force == SWIOTLB_FORCE) || dev->dma_io_tlb_mem)
> return swiotlb_map(dev, phys, size, dir, attrs);
> +#endif
Please provide a wrapper for the dev->dma_io_tlb_mem check that
always returns false if the per-device swiotlb support is
> +#ifdef CONFIG_SWIOTLB
> + struct io_tlb_mem *dma_io_tlb_mem;
> #endif
Please add a new config option for this code instead of always building
it when swiotlb is enabled.
> +static int swiotlb_init_io_tlb_mem(struct io_tlb_mem *mem, phys_addr_t start,
> +
On Wed, Jan 13, 2021 at 01:29:05PM +0100, Greg KH wrote:
> > > Why does this have to be added here? Shouldn't the platform-specific
> > > code handle it instead?
> >
> > The whole code added here is pretty generic. What we need to eventually
> > do, though is to add a separate dma_device instead
On Wed, Jan 13, 2021 at 09:49:12AM +0100, Christophe Leroy wrote:
> With commit 766c6b63aa04 ("spi: fix client driver breakages when using GPIO
> descriptors") reverted, it is back to work:
...
> What shall I do ?
I would guess that there's an error with the chip select polarity
configuration o
On Wed, Jan 13, 2021 at 12:51:26PM +0100, Christoph Hellwig wrote:
> On Wed, Jan 06, 2021 at 08:50:03AM +0100, Greg KH wrote:
> > > --- a/include/linux/device.h
> > > +++ b/include/linux/device.h
> > > @@ -413,6 +413,7 @@ struct dev_links_info {
> > > * @dma_pools: Dma pools (if dma'ble device)
On Wed, Jan 06, 2021 at 08:50:03AM +0100, Greg KH wrote:
> > --- a/include/linux/device.h
> > +++ b/include/linux/device.h
> > @@ -413,6 +413,7 @@ struct dev_links_info {
> > * @dma_pools: Dma pools (if dma'ble device).
> > * @dma_mem: Internal for coherent mem override.
> > * @cma_
On Wed, Jan 06, 2021 at 11:41:19AM +0800, Claire Chang wrote:
> Added a new struct, io_tlb_mem, as the IO TLB memory pool descriptor and
> moved relevant global variables into that struct.
> This will be useful later to allow for restricted DMA pool.
I like where this is going, but a few comments.
On Tue, Jan 12, 2021 at 06:01:39PM +0100, Thomas Gleixner wrote:
> set_pte_at() on MIPS invokes update_cache() which might recurse into
> kmap_local(). Use set_pte() like the original MIPS highmem implementation
> did.
>
> Fixes: a4c33e83bca1 ("mips/mm/highmem: Switch to generic kmap atomic")
> Re
This adds a folder per LIOBN under /sys/kernel/debug/iommu with IOMMU
table parameters.
This is enabled by CONFIG_IOMMU_DEBUGFS.
Signed-off-by: Alexey Kardashevskiy
---
The first use is to find leaks:
while [ true ] ; do echo $( date ; sudo find /sys/kernel/debug/iommu -iname
weight
-exec cat
Hello,
My board has powerpc 885 microcontroler. Temperature sensor is an LM74.
Kernel has CONFIG_SPI_FSL_SPI and CONFIG_SPI_FSL_CPM and CONFIG_SENSORS_LM70.
Since kernel 5.10, 'sensors' reports temperature 0°C on my board:
root@vgoip:~# sensors
lm74-spi-0-5
Adapter: SP
On 2021-01-12 18:01, Thomas Gleixner wrote:
The recent conversion to the generic kmap_local infrastructure failed to
assign the proper pre/post map/unmap flush operations for sparc.
Sparc requires cache flush before map/unmap and tlb flush afterwards.
Fixes: 3293efa97807 ("sparc/mm/highmem: S
The fallback sequences for L1D flushing and store forwarding barriers
require contortions with saving and reloading registers from a PACA
save area and SPRGs because they are called at nasty places when
registers are not available. The intention was to make them cover as
much kernel data as possibl
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 15 +
arch/powerpc/include/asm/processor.h | 1 +
arch/powerpc/include/asm/thread_info.h | 6
arch/powerpc/kernel/exceptions-64
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 7 +++
arch/powerpc/kernel/exceptions-64s.S | 18 --
2 files changed, 7 insertions(+), 18 deletions(-)
diff --git a/arch/pow
Saving and restoring soft-mask state can now be done in C using the
interrupt handler wrapper functions.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 26
arch/powerpc/kernel/exceptions-64s.S | 60
2 files changed, 26 insertio
This moves the common NMI entry and exit code into the interrupt handler
wrappers.
This changes the behaviour of soft-NMI (watchdog) and HMI interrupts, and
also MCE interrupts on 64e, by adding missing parts of the NMI entry to
them.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 7 +++
arch/powerpc/include/asm/ppc_asm.h | 24
arch/powerpc/kernel/exceptions-64e.S | 1 -
arch/powerpc/kernel/e
This will be used by interrupt entry as well.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/cputime.h | 15 +++
arch/powerpc/kernel/syscall_64.c | 10 +-
2 files changed, 16 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/include/asm/cputime.h
b/arch
The interrupt handler wrapper functions are not the ideal place to
maintain context tracking because after they return, the low level exit
code must then determine if there are interrupts to replay, or if the
task should be preempted, etc. Those paths (e.g., schedule_user) include
their own excepti
There is no need for this to be in asm, use the new intrrupt entry wrapper.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 15 +++
arch/powerpc/kernel/exceptions-64s.S | 26 --
2 files changed, 11 insertions(+), 30 deletions(-)
diff
Move irq_enter/irq_exit into asynchronous interrupt handler wrappers.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 2 ++
arch/powerpc/kernel/dbell.c | 3 +--
arch/powerpc/kernel/irq.c| 4
arch/powerpc/kernel/tau_6xx.c| 3 ---
arch/po
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