update pt_regs rather
> than redirecting execution to a dummy function that returns.
>
> Signed-off-by: Naveen N. Rao
> ---
> The only change is to add a comment in override_function_with_return()
> to clarify that we don't need to worry about 32-bit userspace while
> emul
us and is less error prone.
>
> Signed-off-by: Al Viro
> Signed-off-by: Michael Ellerman
Reviewed-by: Samuel Mendoza-Jonas
> ---
> arch/powerpc/kernel/ptrace.c | 20 ++--
> 1 file changed, 6 insertions(+), 14 deletions(-)
>
> diff --git a/arch/
hand in the code, which is more bug prone.
>
> Signed-off-by: Michael Ellerman
For this and the following patches:
Reviewed-by: Samuel Mendoza-Jonas
> ---
> arch/powerpc/include/asm/io.h | 10 ++
> 1 file changed, 10 insertions(+)
>
> diff --git a/arch/powerpc/include
On Thu, 2016-08-11 at 20:08 -0300, Thiago Jung Bauermann wrote:
> Implement the arch_kexec_verify_buffer hook to verify that a device
> tree blob passed by userspace via kexec_file_load contains only nodes
> and properties from a whitelist.
>
> In elf64_load we merge those properties into the devi
On Tue, 2016-08-09 at 10:19 -0300, Thiago Jung Bauermann wrote:
> Am Dienstag, 09 August 2016, 09:01:13 schrieb Mimi Zohar:
> >
> > On Tue, 2016-08-09 at 20:59 +1000, Michael Ellerman wrote:
> > >
> > > Mimi Zohar writes:
> > > >
> > > > diff --git a/security/integrity/ima/ima.h
> > > > b/secur
Update the hvc driver to use the OPAL irqchip if made available by the
running firmware. If it is not present, the driver falls back to the
existing OPAL event number.
Signed-off-by: Samuel Mendoza-Jonas
Cc: # 4.1.x-
---
v2: Always try irq_of_parse_and_map before falling back
drivers/tty/hvc
ned-off-by: Samuel Mendoza-Jonas
Cc: # 4.1.x-
---
drivers/tty/hvc/hvc_console.h | 1 +
drivers/tty/hvc/hvc_irq.c | 7 +--
drivers/tty/hvc/hvc_opal.c| 3 +++
3 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
ind
On Tue, 2016-07-05 at 15:31 +1000, Michael Ellerman wrote:
> On Tue, 2016-28-06 at 03:11:39 UTC, Sam Mendoza-Jonas wrote:
> > diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
> > index b7cd0ae..8c53f5b 100644
> > --- a/drivers/tty/hvc/hvc_opal.c
> > +++ b/drivers/tty/hvc/hvc_opa
On Fri, 2016-07-01 at 13:15 -0300, Thiago Jung Bauermann wrote:
> Hi Samuel,
>
> Thanks for your response.
>
> Am Freitag, 01 Juli 2016, 11:46:21 schrieb Samuel Mendoza-Jonas:
> > On Thu, 2016-06-30 at 11:27 -0300, Thiago Jung Bauermann wrote:
> > > I have a questi
ned-off-by: Samuel Mendoza-Jonas
Cc: # 4.1.x-
---
drivers/tty/hvc/hvc_console.h | 1 +
drivers/tty/hvc/hvc_irq.c | 7 +--
drivers/tty/hvc/hvc_opal.c| 3 +++
3 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/hvc/hvc_console.h b/drivers/tty/hvc/hvc_console.h
ind
Update the hvc driver to use the OPAL irqchip if made available by the
running firmware. If it is not present, the driver falls back to the
existing OPAL event number.
Signed-off-by: Samuel Mendoza-Jonas
Cc: # 4.1.x-
---
drivers/tty/hvc/hvc_opal.c | 12 +++-
1 file changed, 11
is closed, but
OPAL will still generate interrupts that are not handled, leading to
rcu_sched stall warnings.
Set IRQF_SHARED when calling request_irq, allowing additional consoles
to start properly.
Signed-off-by: Samuel Mendoza-Jonas
Cc: # 4.1.x-
---
drivers/tty/hvc/hvc_irq.c | 5 -
1 file
On 27/07/15 15:56, Stewart Smith wrote:
> Samuel Mendoza-Jonas writes:
>> Always include a timeout when waiting for secondary cpus to enter OPAL
>> in the kexec path, rather than only when crashing.
>
> This *sounds* reasonable... but I wonder what actual worse case could
Always include a timeout when waiting for secondary cpus to enter OPAL
in the kexec path, rather than only when crashing.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/platforms/powernv/setup.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a
sure the HILE bit is reset once we've
finished waiting for all of the secondaries to be returned to OPAL.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/platforms/powernv/setup.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/setup.c
b
code
Neaten the endian check (and extra call to mfmsr!) by modifying the msr and
branching to the target kernel in the same call to rfid.
Samuel Mendoza-Jonas (2):
powerpc/kexec: Reset secondary cpu endianess before kexec
powerpc/kexec: Reset HILE before kexec_sequence
arch/powerpc/kernel
secondaries on powernv are returned to
OPAL.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/misc_64.S | 13 +++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 4e314b9..6e4168c 100644
--- a/arch
secondaries on powernv are returned to
OPAL.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/misc_64.S | 13 +++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 4e314b9..6e4168c 100644
--- a/arch
!CONFIG_PPC_BOOK3S_64 case in kexec_wait to correctly branch to 0x60
Changes in v2:
Add an #ifdef for subarch-specific code
Neaten the endian check (and extra call to mfmsr!) by modifying the msr and
branching to the target kernel in the same call to rfid.
Samuel Mendoza-Jonas (2):
powerpc/kexec: Reset secondary
sure the HILE bit is reset before any
thread branches into the target kernel.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/machine_kexec_64.c | 6 --
arch/powerpc/kernel/misc_64.S | 19 +--
2 files changed, 21 insertions(+), 4 deletions(-)
diff --git
On 08/07/15 16:51, Stewart Smith wrote:
> Michael Ellerman writes:
>> On Wed, 2015-07-08 at 14:37 +1000, Samuel Mendoza-Jonas wrote:
>>> On powernv secondary cpus are returned to OPAL, and will then enter the
>>> target kernel in big-endian. However if it is se
secondaries on powernv are returned to
OPAL.
Signed-off-by: Samuel Mendoza-Jonas
---
v2: Add an #ifdef for subarch-specific code
Neaten the endian check (and extra call to mfmsr!) by modifying the msr and
branching to the target kernel in the same call to rfid.
arch/powerpc/kernel/misc_64.S
switched off before entering
kexec_sequence.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/machine_kexec_64.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/kernel/machine_kexec_64.c
b/arch/powerpc/kernel/machine_kexec_64.c
index 1a74446..2266135c 100644
On 08/07/15 13:37, Scott Wood wrote:
> On Wed, 2015-07-08 at 13:29 +1000, Samuel Mendoza-Jonas wrote:
>> Older big-endian ppc64 kernels don't include the FIXUP_ENDIAN check,
>> meaning if we kexec from a little-endian kernel the target kernel will
>> fail to boot.
>>
NDIAN.
Signed-off-by: Samuel Mendoza-Jonas
---
V2: As suggested by Anton take advantage of the rfid call and switch off
MSR_LE and branch to the target kernel in the same step.
kexec_trampoline.S | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/kexec_trampolin
On 08/07/15 11:56, Anton Blanchard wrote:
> Hi Sam,
>
>> Older big-endian ppc64 kernels don't include the FIXUP_ENDIAN check,
>> meaning if we kexec from a little-endian kernel the target kernel will
>> fail to boot.
>> Returning to big-endian before we enter the target kernel ensures that
>> the
NDIAN.
Signed-off-by: Samuel Mendoza-Jonas
---
kexec_trampoline.S | 9 -
kexec_trampoline.h | 17 +++--
2 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/kexec_trampoline.S b/kexec_trampoline.S
index a3eb314..29537ab 100644
--- a/kexec_trampoline.S
+++ b/kexec_trampol
secondaries on powernv are returned to
OPAL.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/misc_64.S | 15 +--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 4e314b9..c73e587 100644
--- a
switched off before entering
kexec_sequence.
Signed-off-by: Samuel Mendoza-Jonas
---
arch/powerpc/kernel/machine_kexec_64.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/kernel/machine_kexec_64.c
b/arch/powerpc/kernel/machine_kexec_64.c
index 1a74446..2266135c 100644
Reviewed-by: Samuel Mendoza-Jonas
On 26/05/15 11:36, Cyril Bur wrote:
> Rather than continuing to maintain a copy of pseries_defconfig with enabled
> CONFIG_CPU_LITTLE_ENDIAN, use the generic merge_config script and use an
> le.config to enable little endian on top of pseries_defconfi
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