ss likely to conflict.
>
Ping about this patchset. What do the MTD maintainers think?
Hi David,
Jeremy mentioned you might be interested in seeing these.
Thanks,
Cyril
> Either way, I'm happy.
>
> Cheers,
>
>
> Jeremy
>
> ---
> Cyril Bur (2):
>
ommit ed59190e41b725e1cfd79541f5fc66c20adb0671
Author: Cyril Bur
Date: Wed Apr 1 14:05:30 2015 +0800
powerpc/powernv: Add interfaces for flash device access
Cheers,
Cyril
Cyril Bur (1):
drivers/mtd: add powernv flash MTD abstraction driver
drivers/mtd/devices/Kconfig | 6 +
drivers/mtd/devices/Makefile
Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.
Minor updates from Jeremy Kerr and Joel Stanley.
Signed-off-by: Cyril Bur
Signed-off-by: Joel Stanley
Signed-off-by: Jeremy Kerr
These two configs should be identical with the exception of big or little
endian
The big endian version has XMON_DEFAULT turned on while the little endian has
XMON_DEFAULT not set. Enable XMON_DEFAULT for little endian.
Signed-off-by: Cyril Bur
---
arch/powerpc/configs/pseries_le_defconfig | 1
maintenance in the future and will ensure that
both 'defconfigs' are always in sync.
Signed-off-by: Cyril Bur
---
arch/powerpc/Makefile | 3 +
arch/powerpc/configs/le.config| 1 +
arch/powerpc/configs/pseries_le_defconfig | 320 ---
at - I'll post a v2.
One question though,
> On Mon, May 04, 2015 at 04:42:19PM +1000, Cyril Bur wrote:
> > Powerpc powernv platforms allow access to certain system flash devices
> > through a firmwarwe interface. This change adds an mtd driver for these
> > flash devices
On Sun, 2015-05-24 at 12:19 +0300, Denis Kirjanov wrote:
> On 5/24/15, Anton Blanchard wrote:
> > Hi Cyril,
> >
> >> These two configs should be identical with the exception of big or
> >> little endian
> >>
> >> The big endian version has XMON_DEFAULT turned on while the little
> >> endian has XM
.
CC: Marcelo Henrique Cerri
CC: Fionnuala Gunter
CC: linux-cry...@vger.kernel.org
CC: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Cyril Bur
---
drivers/crypto/Kconfig| 11 +--
drivers/crypto/nx/Kconfig | 11 +--
2 files changed, 10 insertions(+), 12 deletions(-)
diff --
to correctly set all the parameters. This
is done through the explicit call to make olddefconfig
Signed-off-by: Cyril Bur
---
V2: Rework to have olddefconfig (or equivalent) only called once.
Improved to make writing *_defconfig targets easier and have the
targets look cleaner.
a
as
possible, not sit in xmon.
In the event debugging is required, the option can be enabled or xmon=on
can be specified on commandline.
Signed-off-by: Cyril Bur
---
V2: Removes XMON_DEFAULT from big endian after Antons suggestion that it
should be a default for production systems.
arch
Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.
Minor updates from Jeremy Kerr and Joel Stanley.
Signed-off-by: Cyril Bur
Signed-off-by: Joel Stanley
Signed-off-by: Jeremy Kerr
---
V2
Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.
Minor updates from Jeremy Kerr and Joel Stanley.
Signed-off-by: Cyril Bur
Signed-off-by: Joel Stanley
Signed-off-by: Jeremy Kerr
---
V2
On Fri, 2015-05-29 at 14:52 +0530, Neelesh Gupta wrote:
>
> [...]
>
> > +/**
> > + * @mtd: the device
> > + * @erase: the erase info
> > + * Returns 0 if erase successful or -ERRNO if an error occurred
> > + */
> > +static int powernv_flash_erase(struct mtd_info *mtd, struct erase_info
> > *eras
Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.
Minor updates from Jeremy Kerr and Joel Stanley.
Signed-off-by: Cyril Bur
Signed-off-by: Joel Stanley
Signed-off-by: Jeremy Kerr
---
V2
Powerpc powernv platforms allow access to certain system flash devices
through a firmwarwe interface. This change adds an mtd driver for these
flash devices.
Minor updates from Jeremy Kerr and Joel Stanley.
Signed-off-by: Cyril Bur
Signed-off-by: Joel Stanley
Signed-off-by: Jeremy Kerr
On Tue, 2015-06-02 at 14:26 +1000, Cyril Bur wrote:
> Powerpc powernv platforms allow access to certain system flash devices
> through a firmwarwe interface. This change adds an mtd driver for these
> flash devices.
>
> Minor updates from Jeremy Kerr and Joel Stanley.
>
>
commit
2fabf084b6ad.
Cc: Nishanth Aravamudan
Cc: Nathan Fontenot
Signed-off-by: Li Zhong
Acked-by: Nishanth Aravamudan
Tested-by: Cyril Bur
---
arch/powerpc/kernel/smp.c | 10 --
arch/powerpc/mm/numa.c| 2 +-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a
CONFIG_FHANDLE is a requirement for systemd and with the increasing
uptake of systemd within distros it makes sense for 64 bit defconfigs
to include it.
Signed-off-by: Cyril Bur
---
arch/powerpc/configs/cell_defconfig | 1 +
arch/powerpc/configs/celleb_defconfig| 1 +
arch
tree nodes.
Cyril Bur (2):
powerpc/pseries: fix endian bugs in mobility RTAS calls
powerpc/pseries: fix bugs in RTAS mobility code
arch/powerpc/platforms/pseries/mobility.c | 143 +++---
1 file changed, 89 insertions(+), 54 deletions(-)
--
1.9.1
These calls use a buffer shared memory buffer to comunicate device tree
updates.
PAPR specifies that RTAS buffers are to be written in big endian.
Signed-off-by: Cyril Bur
---
arch/powerpc/platforms/pseries/mobility.c | 50 ---
1 file changed, 26 insertions(+), 24
overflows and/or garbage reads.
Don't warn about failed allcations when the amount was taken from the buffer,
assume the value was incorrect, don't needlessly concern the user.
Signed-off-by: Cyril Bur
---
arch/powerpc/platforms/pseries/mobility.c | 95 +
tree nodes.
v1 attempted to keep the structure of the existing code.
v2 rewrites the relevent sections of mobility.c.
Cyril Bur (3):
drivers/of: add of_changeset_apply_locked
powerpc/pseries: create rtas buffer accessor
powerpc/pseries: fix bugs in mobility RTAS calls
arch/powerpc/platforms
Due to the requirement of of_changesets that of_changeset_apply be called
holding the of_mutex and that the of_mutex cannot be accessed nicely outside
the of code, added a wrapper which grabs the lock and called
of_changeset_apply.
Signed-off-by: Cyril Bur
---
drivers/of/dynamic.c | 11
e was incorrect, don't needlessly concern the user.
Signed-off-by: Cyril Bur
---
arch/powerpc/platforms/pseries/mobility.c | 406 ++
1 file changed, 243 insertions(+), 163 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/mobility.c
b/arch/powerpc/platfor
Added simple accessor functions for rtas in memory buffers which performs
accesses of appropriate type and performs endian conversions.
Signed-off-by: Cyril Bur
---
arch/powerpc/platforms/pseries/Makefile | 4 +-
arch/powerpc/platforms/pseries/pseries.h | 41 +
arch/powerpc
On Thu, 2014-09-25 at 15:47 -0700, Tyrel Datwyler wrote:
> On 09/24/2014 11:41 PM, Cyril Bur wrote:
> > Added simple accessor functions for rtas in memory buffers which performs
> > accesses of appropriate type and performs endian conversions.
> >
> > Signed-off-by: C
Hi Nathan,
I tried to apply these to Linus' tree and Mpes tree and to stable and
got several problems, I got stuck at the third hunk in patch 5.
Could you point out where I'm going wrong?
Thanks,
Cyril
On Mon, 2014-11-17 at 15:44 -0600, Nathan Fontenot wrote:
> In order to better support devic
On Tue, 2014-11-18 at 12:34 -0600, Nathan Fontenot wrote:
> On 11/17/2014 08:00 PM, Cyril Bur wrote:
> > Hi Nathan,
> >
> > I tried to apply these to Linus' tree and Mpes tree and to stable and
> > got several problems, I got stuck at the third hunk in patch 5.
&
On Mon, 2014-11-17 at 15:56 -0600, Nathan Fontenot wrote:
> Move handling of memory hotplug remove on pseries completely into the kernel.
>
> The current memory hotplug remove path involves the drmgr command doing part
> of this work in userspace and requesting the kernel to do additional pieces.
On Mon, 2014-11-17 at 15:54 -0600, Nathan Fontenot wrote:
> Move handling of memory hotplug add on pseries completely into the kernel.
>
> The current memory hotplug add path involves the drmgr command doing part
> of this work in userspace and requesting the kernel to do additional pieces.
> Thi
On Mon, 2014-11-17 at 15:51 -0600, Nathan Fontenot wrote:
> Create a new entry point for device hotplug on pseries that will
> work for both PowerVM and PowerKVM systems.
>
> The current process to hotplug (or dlpar) devices (generally the same
> process for memory, cpu, and pci devices) on Power
On Mon, 2014-11-24 at 09:03 -0600, Nathan Fontenot wrote:
>
> On 11/21/2014 01:49 AM, Cyril Bur wrote:
> >
> > On Mon, 2014-11-17 at 15:56 -0600, Nathan Fontenot wrote:
> >> Move handling of memory hotplug remove on pseries completely into the
> >> kernel.
n
> mmio register, and the mmio mappings get invalidated in the EEH
> teardown.
>
Hey Daniel, keeping in mind I can't exactly test it, and that I don't know the
ins and outs of CAPI, the code looks nice and it makes sence to me.
Some very minor points,
Otherwise
Acked-by: C
e to me, from an outsiders perspective
code appears to do what the commit message says.
Just one super minor question, you do the NULL check in the caller. How obvious
is the error if/when a caller forgets?
Acked-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
On Tue, 28 Jul 2015 15:28:36 +1000
Daniel Axtens wrote:
> Check if an IRQ is mapped before releasing it.
>
> This will simplify future EEH code by allowing unconditional unmapping
> of IRQs.
>
Acked-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> dr
needs to be unmapped.
>
> - PCI regions are allocated in cxl_map_adapter_regs.
>Therefore they should be released in unmap, not elsewhere.
>
You've changed the order in which cxl_remove_adapter() does its work, which,
I'm sure you've considered and it's fine
it now.
>
Reviewed-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> drivers/misc/cxl/Kconfig | 6 ++
> 1 file changed, 6 insertions(+)
>
> diff --git a/drivers/misc/cxl/Kconfig b/drivers/misc/cxl/Kconfig
> index b6db9ebd52c2..c151fc1fe14c 100644
> --- a
gt;
> - Once-only functions that do not involve allocating/releasing memory
>stay in the overarching 'cxl_init_afu'/'cxl_remove_afu' pair.
>However, the task of picking an AFU mode and activating it has been
>broken out.
>
Reviewed-by: Cyril Bur
icpate.
>
> In both cases, we shouldn't remove the AFU/vPHB.
>
Reviewed-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> drivers/misc/cxl/pci.c | 5 -
> 1 file changed, 5 deletions(-)
>
> diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
>
On Tue, 28 Jul 2015 15:28:38 +1000
Daniel Axtens wrote:
> Some aspects of initialisation are done only once in the lifetime of
> an adapter: for example, allocating memory for the adapter,
> allocating the adapter number, or setting up sysfs/debugfs files.
>
> However, we may want to be able to
On Tue, 28 Jul 2015 15:28:41 +1000
Daniel Axtens wrote:
> Provide a kernel API and a sysfs entry which allow a user to specify
> that when a card is PERSTed, it's image will stay the same, allowing
> it to participate in EEH.
>
> cxl_reset is used to reflash the card. In that case, we cannot saf
On Tue, 28 Jul 2015 15:28:42 +1000
Daniel Axtens wrote:
> EEH (Enhanced Error Handling) allows a driver to recover from the
> temporary failure of an attached PCI card. Enable basic CXL support
> for EEH.
>
Same thoughts about the config option as in 8/10.
As I've mentioned to you my knowledge
On Wed, 12 Aug 2015 10:48:10 +1000
Daniel Axtens wrote:
> We're about to make these more complex, so make them functions
> first.
>
Reviewed-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> drivers/misc/cxl/cxl.h | 51
> ++
debugging whatever is doing that.
>
My previous comments appear to have been added, making functions from those
macros was a good move. I can't speak too much for the exact function of the
patch but the code looks good.
Reviewed-by: Cyril Bur
> Signed-off-by:
ter number out of
>cxl_init_adapter.)
>
> - Create two new functions: 'cxl_configure_adapter', and its pair
>'cxl_deconfigure_adapter'. These two functions 'wire up' the
>hardware --- they (de)configure resources that do not need to
that case, we cannot safely
> assert that the image will not change. Therefore, disallow cxl_reset
> if the flag is set.
>
Looks much better without all the #ifdefs!!
Reviewed-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> Documentation/ABI/testing/sysfs-class-cxl | 1
t is
correct.
Reviewed-by: Cyril Bur
> Signed-off-by: Daniel Axtens
> ---
> drivers/misc/cxl/cxl.h | 1 +
> drivers/misc/cxl/pci.c | 252
>
> drivers/misc/cxl/vphb.c | 8 ++
> 3 files changed, 261 insertions(+)
>
>
the rtas_args struct to pass params to
rtas_ibm_suspend_me in favour of passing what it needs directly.
Signed-off-by: Cyril Bur
---
This patch has been tested with KVM both LE and BE and on PowerVM both LE and
BE. Under QEMU/KVM the migration happens without touching the these code
pathes.
For
On Wed, 2015-01-21 at 14:33 +1100, Michael Ellerman wrote:
> On Wed, 2015-01-21 at 13:32 +1100, Cyril Bur wrote:
> > The need to handle ibm,suspend_me specially from within ppc_rtas has left an
> > endian bug exposed as rtas_ibm_suspend_me actually performs HCALLs and
> >
On Fri, 2015-02-27 at 18:24 -0800, Tyrel Datwyler wrote:
> During suspend/migration operation we must wait for the VASI state reported
> by the hypervisor to become Suspending prior to making the ibm,suspend-me
> RTAS call. Calling routines to rtas_ibm_supend_me() pass a vasi_state variable
> that
On Fri, 2015-02-27 at 18:24 -0800, Tyrel Datwyler wrote:
> We currently use the device tree update code in the kernel after resuming
> from a suspend operation to re-sync the kernels view of the device tree with
> that of the hypervisor. The code as it stands is not endian safe as it relies
> on pa
On Tue, 2015-03-03 at 15:15 -0800, Tyrel Datwyler wrote:
> On 03/02/2015 01:49 PM, Tyrel Datwyler wrote:
> > On 03/01/2015 09:20 PM, Cyril Bur wrote:
> >> On Fri, 2015-02-27 at 18:24 -0800, Tyrel Datwyler wrote:
> >>> We currently use the device tree update cod
to call
> rtas_ibm_suspend_me again.
>
Hi Tyrel, sorry this fell off my radar. Thanks for addressing all those
issues.
> Signed-off-by: Tyrel Datwyler
> Cc: Nathan Fontenot
> Cc: Cyril Bur
> ---
>
> Changes in v2:
> - Addressed Cyril's comments as follow:
>
h the custom ASM.
- Added some extra debugging output to the vmx_signal testcase
- Fixed comments in testing code
- Updated VSX test code to use GCC Altivec macros
Cyril Bur (9):
selftests/powerpc: Test the preservation of FPU and VMX regs across
syscall
selftests/powerpc: Test preserv
Test that the non volatile floating point and Altivec registers get
correctly preserved across the fork() syscall.
fork() works nicely for this purpose, the registers should be the same for
both parent and child
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/Makefile
Load up the non volatile FPU and VMX regs and ensure that they are the
expected value in a signal handler
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/math/.gitignore | 2 +
tools/testing/selftests/powerpc/math/Makefile | 4 +-
tools/testing/selftests/powerpc/math
hot while not having MSR_{FP,VEC,VSX} means that the
registers must be loaded. This allows for a smarter return to userspace.
Signed-off-by: Cyril Bur
---
arch/powerpc/kernel/process.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel
benchmarking it was determined that avoiding C in the
common case is a performance benefit. The full check in asm greatly
complicated that codepath for a negligible performance gain and the
trade-off was deemed not worth it.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/processor.h | 2
saving of registers to thread structs and leave
threads MSR with bits enabled.
This patch introduces no functional change.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/reg.h | 8
arch/powerpc/include/asm/switch_to.h | 7 +++
arch/powerpc/kernel/process.c| 31
reload of VEC state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 3 ++-
arch/powerpc/kernel/process.c| 12 +++-
arch/powerpc/kernel/vector.S | 24
3 files changed, 17 insertions(+), 22 deletions(-)
diff --git a/arch/powerpc
userspace with hot
registers avoiding a possibly pointless reload of FPU register state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 3 ++-
arch/powerpc/kernel/fpu.S| 21 -
arch/powerpc/kernel/process.c| 12 +++-
3 files changed
Loop in assembly checking the registers with many threads.
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/math/.gitignore| 2 +
tools/testing/selftests/powerpc/math/Makefile | 5 +-
tools/testing/selftests/powerpc/math/fpu_asm.S | 36 +++
tools/testing
pointless reload of VSX state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 4
arch/powerpc/kernel/ppc_ksyms.c | 4
arch/powerpc/kernel/process.c| 42 +---
arch/powerpc/kernel/vector.S | 17 ---
4 files
On Wed, 24 Feb 2016 19:57:38 +0530
"Naveen N. Rao" wrote:
> On 2016/02/23 02:38PM, Cyril Bur wrote:
> > Test that the non volatile floating point and Altivec registers get
> > correctly preserved across the fork() syscall.
> >
> > fork() works nicely for
On Tue, 23 Feb 2016 14:38:14 +1100
Cyril Bur wrote:
> Test that the non volatile floating point and Altivec registers get
> correctly preserved across the fork() syscall.
>
> fork() works nicely for this purpose, the registers should be the same for
> both parent and child
>
On Thu, 25 Feb 2016 11:52:05 +0530
"Naveen N. Rao" wrote:
> On 2016/02/25 10:44AM, Cyril Bur wrote:
> > On Wed, 24 Feb 2016 19:57:38 +0530
> > "Naveen N. Rao" wrote:
> >
> > > On 2016/02/23 02:38PM, Cyril Bur wrote:
> > > > T
Test that the non volatile floating point and Altivec registers get
correctly preserved across the fork() syscall.
fork() works nicely for this purpose, the registers should be the same for
both parent and child
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/Makefile
hot while not having MSR_{FP,VEC,VSX} means that the
registers must be loaded. This allows for a smarter return to userspace.
Signed-off-by: Cyril Bur
---
arch/powerpc/kernel/process.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel
Loop in assembly checking the registers with many threads.
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/math/.gitignore| 2 +
tools/testing/selftests/powerpc/math/Makefile | 5 +-
tools/testing/selftests/powerpc/math/fpu_asm.S | 36 +++
tools/testing
Load up the non volatile FPU and VMX regs and ensure that they are the
expected value in a signal handler
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/math/.gitignore | 2 +
tools/testing/selftests/powerpc/math/Makefile | 4 +-
tools/testing/selftests/powerpc/math
saving of registers to thread structs and leave
threads MSR with bits enabled.
This patch introduces no functional change.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/reg.h | 8
arch/powerpc/include/asm/switch_to.h | 7 +++
arch/powerpc/kernel/process.c| 31
reload of VEC state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 3 ++-
arch/powerpc/kernel/process.c| 12 +++-
arch/powerpc/kernel/vector.S | 24
3 files changed, 17 insertions(+), 22 deletions(-)
diff --git a/arch/powerpc
userspace with hot
registers avoiding a possibly pointless reload of FPU register state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 3 ++-
arch/powerpc/kernel/fpu.S| 21 -
arch/powerpc/kernel/process.c| 12 +++-
3 files changed
benchmarking it was determined that avoiding C in the
common case is a performance benefit. The full check in asm greatly
complicated that codepath for a negligible performance gain and the
trade-off was deemed not worth it.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/processor.h | 2
eword
- Reordered some code in basic-asm.h and neatened some comments
Cyril Bur (9):
selftests/powerpc: Test the preservation of FPU and VMX regs across
syscall
selftests/powerpc: Test preservation of FPU and VMX regs across
preemption
selftests/powerpc: Test FPU and VMX regs in s
pointless reload of VSX state.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/switch_to.h | 4
arch/powerpc/kernel/ppc_ksyms.c | 4
arch/powerpc/kernel/process.c| 42 +---
arch/powerpc/kernel/vector.S | 17 ---
4 files
On Mon, 29 Feb 2016 17:53:42 +1100
Cyril Bur wrote:
Apologies this should have had a Version 6 prefix!
> Cover-letter for V1 of the series is at
> https://lists.ozlabs.org/pipermail/linuxppc-dev/2015-November/136350.html
>
> Cover-letter for V2 of the series is at
> https://l
On Mon, 29 Feb 2016 22:10:13 +1100 (AEDT)
Michael Ellerman wrote:
> Hi Suraj,
>
> On Mon, 2016-29-02 at 06:29:55 UTC, Suraj Jitindar Singh wrote:
> > LTO can cause GCC to inline some functions which have attributes set. The
>
> You should define what LTO is the first time you use it.
>
> > a
event_pinned_vs_ebb_test.out:[FAIL] Test FAILED on line 87
ipc_unmuxed.out:[FAIL] Test FAILED on line 38
per_event_excludes.out:[FAIL] Test FAILED on line 95
There were no matches for grep SKIP *.out for any of the four.
This patch appears to not have affected any of the tests.
Reviewed-
.
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/pmu/lib.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/powerpc/pmu/lib.c
b/tools/testing/selftests/powerpc/pmu/lib.c
index a361ad3..8b992fa 100644
--- a/tools/testing/selftests/powerpc
the overlapping layout of FPU registers and VSX registers on POWER
chips, this patch also benefits FPU loads and stores when VSX is compiled
in and the CPU is VSX capable.
Signed-off-by: Cyril Bur
---
arch/powerpc/include/asm/ppc_asm.h | 65 ++
arch/powerpc
instruction.
Signed-off-by: Cyril Bur
---
These patches need to be applied on to of my rework of FPU/VMX/VSX
switching: https://patchwork.ozlabs.org/patch/589703/
I left in some of my comments indicating if functions are called from C or
not. Looking at them now, they might be a bit much, let me know what
On Tue, 16 Feb 2016 14:29:32 +0530
Anshuman Khandual wrote:
> This patch creates a function flush_tmregs_to_thread which
> will then be used by subsequent patches in this series. The
> function checks for self tracing ptrace interface attempts
> while in the TM context and logs appropriate warnin
On Tue, 16 Feb 2016 14:29:47 +0530
Anshuman Khandual wrote:
> This patch adds ptrace interface test for EBB specific
> registers. This also adds some generic ptrace interface
> based helper functions to be used by other patches later
> on in the series.
>
> Signed-off-by: Anshuman Khandual
> --
On Tue, 16 Feb 2016 14:29:48 +0530
Anshuman Khandual wrote:
> This patch adds ptrace interface test for GPR/FPR registers.
> This adds ptrace interface based helper functions related to
> GPR/FPR access and some assembly helper functions related to
> GPR/FPR registers.
>
I wonder if with a bit
On Wed, 02 Mar 2016 09:59:06 +0530
Anshuman Khandual wrote:
> On 03/02/2016 05:45 AM, Cyril Bur wrote:
> > On Tue, 16 Feb 2016 14:29:32 +0530
> > Anshuman Khandual wrote:
> >
> >> This patch creates a function flush_tmregs_to_thread which
> >> will the
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/benchmarks/context_switch.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/powerpc/benchmarks/context_switch.c
b/tools/testing/selftests/powerpc/benchmarks/context_switch.c
index
x27;t play well with
__attribute__((__target__("no-vsx")), LTO can cause GCC to forget about the
attribute and compile with VSX instructions regardless. Be weary when
enabling -flfo for this test.
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/benchmarks/Makefile | 1 +
t
On Thu, 10 Mar 2016 10:01:07 +1100
Michael Neuling wrote:
> On Tue, 2016-03-01 at 16:55 +1100, Cyril Bur wrote:
>
> > Currently the assembly to save and restore Altivec registers boils down to
> > a load immediate of the offset of the specific Altivec register in memory
> &
On Thu, 10 Mar 2016 11:09:32 +1100
Michael Neuling wrote:
> On Tue, 2016-03-01 at 16:55 +1100, Cyril Bur wrote:
>
> > Currently the assembly to save and restore VSX registers boils down to a
> > load immediate of the offset of the specific VSX register in memory
> > fo
On Thu, 10 Mar 2016 10:01:07 +1100
Michael Neuling wrote:
> On Tue, 2016-03-01 at 16:55 +1100, Cyril Bur wrote:
>
> > Currently the assembly to save and restore Altivec registers boils down to
> > a load immediate of the offset of the specific Altivec register in memory
> &
On Thu, 10 Mar 2016 16:37:47 +1100
Cyril Bur wrote:
> On Thu, 10 Mar 2016 10:01:07 +1100
> Michael Neuling wrote:
>
> > On Tue, 2016-03-01 at 16:55 +1100, Cyril Bur wrote:
> >
> > > Currently the assembly to save and restore Altivec registers boils down to
like to do a better fix in future.
Signed-off-by: Cyril Bur
---
arch/powerpc/kernel/entry_64.S | 9 +
1 file changed, 9 insertions(+)
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 038e0a1..f3aa4b4 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/
On Wed, 16 Mar 2016 22:45:20 +1100
Benjamin Herrenschmidt wrote:
> On Wed, 2016-03-16 at 13:29 +1100, Cyril Bur wrote:
> > +#ifdef CONFIG_PPC_BOOK3S
> > + ld r10,PACAKMSR(r13)
> > + li r9,MSR_RI
> > + andcr11,r10,r9 /* Re-clear RI *
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/syscalls/Makefile | 3 +-
.../testing/selftests/powerpc/syscalls/spr_fork.c | 78 ++
2 files changed, 80 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/powerpc/syscalls/spr_fork.c
diff
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/syscalls/Makefile | 3 +-
.../testing/selftests/powerpc/syscalls/spr_exec.c | 78 ++
2 files changed, 80 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/powerpc/syscalls/spr_exec.c
diff
well as the Event Based Branch (EBB) registers are
left alone by design as these fall into the same category as leaving file
descriptors open across exec(), it is up the parent thread to sanitise what it
deems necessary.
Signed-off-by: Cyril Bur
---
arch/powerpc/kernel/process.c | 14
Currently copy_thread() doesn't flush SPRs to the parent thread struct.
Currently this only affects the TAR register as perf takes care of some of the
others and the remaining ones are all Event Based Branch (EBB) registers which
are cleared across fork().
Signed-off-by: Cyril Bur
---
Signed-off-by: Cyril Bur
---
arch/powerpc/kernel/process.c | 34 +-
1 file changed, 17 insertions(+), 17 deletions(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 56444a6..7625976 100644
--- a/arch/powerpc/kernel/process.c
Signed-off-by: Cyril Bur
---
tools/testing/selftests/powerpc/syscalls/Makefile | 3 +-
.../testing/selftests/powerpc/syscalls/spr_exec.c | 78 ++
2 files changed, 80 insertions(+), 1 deletion(-)
create mode 100644 tools/testing/selftests/powerpc/syscalls/spr_exec.c
diff
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