asm/pci.h and asm/mpc52xx.h don't need asm/prom.h
Declare struct device_node locally to avoid including of.h
Signed-off-by: Christophe Leroy
---
v3: Add prom.h to prom.c
---
arch/powerpc/include/asm/mpc52xx.h | 3 ++-
arch/powerpc/include/asm/pci.h | 1 -
arch/powerpc/kernel/prom.c
A lot of drivers were getting platform and of headers
indirectly via headers like asm/pci.h or asm/prom.h
Most of them were fixed during 5.19 cycle but a newissue was
introduced by commit 52b1b46c39ae ("of: Create platform devices
for OF framebuffers")
Include missing platform_device.h to allow c
Remove all headers included from asm/prom.h which are not used
by asm/prom.h itself.
Declare struct device_node and struct property locally to
avoid including of.h
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/prom.h | 10 ++
1 file changed, 2 insertions(+), 8 deletions(-
powerpc's asm/prom.h brings some headers that it doesn't need itself.
Once those headers are removed from asm/prom.h, the following
errors occur:
CC [M] drivers/scsi/cxlflash/ocxl_hw.o
drivers/scsi/cxlflash/ocxl_hw.c: In function 'afu_map_irq':
drivers/scsi/cxlflash/ocxl_hw.c:195:16: error: im
> From: Alexey Kardashevskiy
> Sent: Friday, July 8, 2022 2:35 PM
> On 7/8/22 15:00, Alexey Kardashevskiy wrote:
> >
> >
> > On 7/8/22 01:10, Jason Gunthorpe wrote:
> >> On Thu, Jul 07, 2022 at 11:55:52PM +1000, Alexey Kardashevskiy wrote:
> >>> Historically PPC64 managed to avoid using iommu_ops.
On 08/07/2022 17:32, Tian, Kevin wrote:
From: Alexey Kardashevskiy
Sent: Friday, July 8, 2022 2:35 PM
On 7/8/22 15:00, Alexey Kardashevskiy wrote:
On 7/8/22 01:10, Jason Gunthorpe wrote:
On Thu, Jul 07, 2022 at 11:55:52PM +1000, Alexey Kardashevskiy wrote:
Historically PPC64 managed to a
> From: Alexey Kardashevskiy
> Sent: Friday, July 8, 2022 5:46 PM
>
> >>>
> >>> In general, is "domain" something from hardware or it is a software
> >>> concept? Thanks,
> >>>
> >
> > 'domain' is a software concept to represent the hardware I/O page
> > table. A blocking domain means all DMAs fr
@vger.kernel.org, io...@lists.linux-foundation.org, keyri...@vger.kernel.org,
patc...@opensource.cirrus.com, k...@vger.kernel.org, da...@lists.linux.dev,
linux...@kvack.org, accessrunner-gene...@lists.sourceforge.net,
linux1394-de...@lists.sourceforge.net, linux-l...@vger.kernel.org,
rds-de...@
On Fri, Jul 08, 2022 at 04:34:55PM +1000, Alexey Kardashevskiy wrote:
> For now I'll add a comment in spapr_tce_iommu_attach_dev() that it is fine
> to do nothing as tce_iommu_take_ownership() and
> tce_iommu_take_ownership_ddw() take care of not having active DMA mappings.
That will still cause
On 08/07/2022 21:55, Jason Gunthorpe wrote:
On Fri, Jul 08, 2022 at 04:34:55PM +1000, Alexey Kardashevskiy wrote:
For now I'll add a comment in spapr_tce_iommu_attach_dev() that it is fine
to do nothing as tce_iommu_take_ownership() and
tce_iommu_take_ownership_ddw() take care of not having
On Fri, Jul 08, 2022 at 11:10:07PM +1000, Alexey Kardashevskiy wrote:
>
>
> On 08/07/2022 21:55, Jason Gunthorpe wrote:
> > On Fri, Jul 08, 2022 at 04:34:55PM +1000, Alexey Kardashevskiy wrote:
> >
> > > For now I'll add a comment in spapr_tce_iommu_attach_dev() that it is fine
> > > to do nothi
Hi Christophe,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on mkp-scsi/for-next linus/master v5.19-rc5
next-20220708]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to
On 08/07/2022 23:19, Jason Gunthorpe wrote:
On Fri, Jul 08, 2022 at 11:10:07PM +1000, Alexey Kardashevskiy wrote:
On 08/07/2022 21:55, Jason Gunthorpe wrote:
On Fri, Jul 08, 2022 at 04:34:55PM +1000, Alexey Kardashevskiy wrote:
For now I'll add a comment in spapr_tce_iommu_attach_dev() t
On Fri, Jul 08, 2022 at 11:32:58PM +1000, Alexey Kardashevskiy wrote:
> > For power the default domain should be NULL
> >
> > NULL means that the platform is using the group to provide its DMA
> > ops. IIRC this patch was already setup correctly to do this?
> >
> > The transition from NULL to blo
Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
> These patches are rebased on top of objtool/core
> branch of the tip tree, and are tested on
> ppc64le with ppc64le_defconfig.
Seems like objtool/core has been merged in 5.19. I was able to apply
your series on top of powerpc/merge branch. O
Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
> From: Christophe Leroy
This patch needs some description. Could be:
find_insn() will return NULL in case of failure. Check insn in order
to avoid a kernel Oops for NULL pointer dereference.
>
> Signed-off-by: Christophe Leroy
> ---
Le 08/07/2022 à 17:06, Christophe Leroy a écrit :
Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
These patches are rebased on top of objtool/core
branch of the tip tree, and are tested on
ppc64le with ppc64le_defconfig.
Seems like objtool/core has been merged in 5.19. I was able to a
On Monday 04 July 2022 14:07:10 Arnd Bergmann wrote:
> Another problem I see is that a kernel that is built for both E500 and E500MC
> uses -mcpu=e500mc and may not actually work on the older ones either
> (even with your patch).
Such configuration is not supported, see arch/powerpc/platforms/Kcon
On Monday 04 July 2022 15:13:58 Pali Rohár wrote:
> On Monday 04 July 2022 14:07:10 Arnd Bergmann wrote:
> > On Mon, Jul 4, 2022 at 12:39 PM Pali Rohár wrote:
> > > On Monday 04 July 2022 20:23:29 Michael Ellerman wrote:
> > > > On 2 July 2022 7:44:05 pm AEST, "Pali Rohár" wrote:
> > > > >On Tues
Since commit e2ef115813c3 ("objtool: Fix STACK_FRAME_NON_STANDARD
reloc type"), powerpc needs asm/asm.h to enable objtool.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/asm.h | 7 +++
1 file changed, 7 insertions(+)
create mode 100644 arch/powerpc/include/asm/asm.h
diff --gi
This series applies on top of the series v3 "objtool: Enable and
implement --mcount option on powerpc" [1] rebased on powerpc-next branch
A few modifications are done to core parts to enable powerpc
implementation:
- R_X86_64_PC32 is abstracted to R_REL32 so that it can then be
redefined as R_PPC_
Fix several annotations in assembly files and enable objtool on PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/kernel/cpu_setup_6xx.S | 26 --
arch/powerpc/kernel/cpu_setup_fsl_booke.S| 8 --
arch/po
In preparation of support of inline static calls on powerpc, provide
trampoline address when updating sites, so that if the destination
function is too far for a direct function call, the call site will
be patched with a call to the trampoline.
Signed-off-by: Christophe Leroy
---
arch/x86/kernel
Call static_call_init() just after jump_label_init().
x86 already called it from setup_arch(). This is not a
problem as static_call_init() is guarded from double call.
Signed-off-by: Christophe Leroy
---
init/main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/init/main.c b/init/main.c
i
Implement inline static calls:
- Put a 'bl' to the destination function ('b' if tail call)
- Put a 'nop' when the destination function is NULL ('blr' if tail call)
- Put a 'li r3,0' when the destination is the RET0 function and not
a tail call.
If the destination is too far (over the 32Mb limit),
In order to support inline static calls for powerpc, objtool needs
the following additions:
- R_REL32 macro
- Support for JUMP instruction used for tail calls
Add the support of decoding branch instruction 'b' which is the jump
instruction used for tail calls. This is because a static call can be
In order to allow other architectures than x86 to use 32 bits
PC relative relocations (S+A-P), define a R_REL32 macro that each
architecture will define, in the same way as already done for
R_NONE, R_ABS32 and R_ABS64.
For x86 that corresponds to R_X86_64_PC32.
For powerpc it will be R_PPC_REL32/R
Le 24/06/2022 à 20:32, Sathvika Vasireddy a écrit :
> From: Christophe Leroy
>
> In order to allow using objtool on cross-built kernels,
> determine size of long from elf data instead of using
> sizeof(long) at build time.
>
> For the time being this covers only mcount.
>
> Signed-off-by: Chr
On Fri, Jul 8, 2022 at 7:12 PM Pali Rohár wrote:
>
> On Monday 04 July 2022 14:07:10 Arnd Bergmann wrote:
> > Another problem I see is that a kernel that is built for both E500 and
> > E500MC
> > uses -mcpu=e500mc and may not actually work on the older ones either
> > (even with your patch).
>
>
On Fri, Jul 8, 2022 at 7:14 PM Pali Rohár wrote:
>
> -ifeq ($(HAS_BIARCH),y)
> -ifeq ($(CROSS32_COMPILE),)
> -ifdef CONFIG_PPC32
> -# These options will be overridden by any -mcpu option that the CPU
> -# or platform code sets later on the command line, but they are needed
> -# to set a sane 32-bi
On 08/07/2022 21:55, Jason Gunthorpe wrote:
On Fri, Jul 08, 2022 at 04:34:55PM +1000, Alexey Kardashevskiy wrote:
For now I'll add a comment in spapr_tce_iommu_attach_dev() that it is fine
to do nothing as tce_iommu_take_ownership() and
tce_iommu_take_ownership_ddw() take care of not having
Hello Christophe,
On Fri, 8 Jul 2022 at 19:32, Christophe Leroy
wrote:
>
> This series applies on top of the series v3 "objtool: Enable and
> implement --mcount option on powerpc" [1] rebased on powerpc-next branch
>
> A few modifications are done to core parts to enable powerpc
> implementation:
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