0.0 pci_enable_device() blocked, no PE assigned.
It appears that the pci_dn object is reused with only pe_number
clobbered in the case. And a simple call to pnv_ioda_setup_dev_PE should
get PE number back and solve the problem.
Signed-off-by: Luming Yu
---
arch/powerpc/platforms/powernv/pci-ioda.c |
0.0 pci_enable_device() blocked, no PE assigned.
It appears that the pci_dn object is reused with only pe_number
clobbered in the case. And a simple call to pnv_ioda_setup_dev_PE should
get PE number back and solve the problem.
Signed-off-by: Luming Yu
---
v0 -> v1:
-clean up garbage leaked in git format
ppc appears to have already supported cmpxchg-local atomic semantics
that is defined by the kernel convention of the feature.
Add this_cpu_cmpxchg ppc local for the performance benefit of arch
sepcific implementation than asm-generic c verison of the locking API.
Signed-off-by: Luming Yu
enable arch feature HAVE_CMPXCHG_LOCAL for ppc by default
Signed-off-by: Luming Yu
---
arch/powerpc/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 6f105ee4f3cf..c10229c0243c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc
The support for user return notifier infrastructure
is hooked into powerpc architecture.
---
arch/powerpc/Kconfig| 1 +
arch/powerpc/include/asm/entry-common.h | 16
arch/powerpc/include/asm/thread_info.h | 2 ++
arch/powerpc/kernel/process.c | 2
On Mon, Dec 11, 2023 at 10:40:38PM +1100, Michael Ellerman wrote:
> Hi Luming Yu,
>
> Luming Yu writes:
> > ppc appears to have already supported cmpxchg-local atomic semantics
> > that is defined by the kernel convention of the feature.
> > Add this_cpu_cmpxchg pp
Before we have powerpc to use the generic entry infrastructure,
the call to fire user return notifier is made temporarily in powerpc
entry code.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/interrupt.c b
The support for user return notifier infrastructure
is manually hooked into powerpc architecture.
Signed-off-by: Luming Yu
---
v0->v1: add user return notifier arch hook manually.
---
arch/powerpc/Kconfig| 1 +
arch/powerpc/include/asm/entry-common.h |
enable HAVE_DMA_CONTIGUOUS for general use of
CMA on powerpc.
Signed-off-by: Luming Yu
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/kernel/setup-common.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b968068cc04a
up kernel is quite useful to silicon validation, despite
it is rare to be found in server productions. the fixes are
obvious. Not like IBM pSeries, it may be not necessary
to have powernv SMP forced. It is difficult to compile a
up kernel for pSerises as I've tried.
Signed-off-by: Lumi
up kernel is quite useful to silicon validation, despite
it is rare to be found in server productions. the fixes are
obvious. Not like IBM pSeries, it may be not necessary
to have powernv SMP forced. It is difficult to compile a
up kernel for pSerises as I've tried.
Signed-off-by: Lumi
ff-by: Luming Yu
---
v1->v2: solve powernv nx-common-powernv.c non-SMP kernel compile issue found by
lkp bot.
v0->v1: solve powernv vas driver non-SMP kernel compile issue found by lkp bot.
---
arch/powerpc/platforms/powernv/Kconfig| 1 -
arch/powerpc/platforms/powernv/opal-imc.c | 1 +
a
gt; pr_err("can't stop test_user_return
> > kthread for cpu %d", i);
> > }
> > }
> > free_percpu(user_return_test);
> > return;
> > }
> >
> > module_init(ini
On Wed, Aug 28, 2024 at 09:27:23AM +0200, Christophe Leroy wrote:
>
>
> Le 28/08/2024 à 08:50, Luming Yu a écrit :
> > On Wed, Aug 28, 2024 at 07:46:52AM +0200, Christophe Leroy wrote:
> > > Hi,
> > >
> > > Le 28/08/2024 à 05:17, 虞陆铭 a écrit :
> >
Wed, Aug 28, 2024 at 09:27:23AM +0200, Christophe Leroy wrote:
>
>
> Le 28/08/2024 à 08:50, Luming Yu a écrit :
> > On Wed, Aug 28, 2024 at 07:46:52AM +0200, Christophe Leroy wrote:
> > > Hi,
> > >
> > > Le 28/08/2024 à 05:17, 虞陆铭 a écrit :
> >
From: Yu Luming
convert powerpc entry code in syscall and fault to use syscall_work
and irqentry_state as well as common calls from generic entry infrastructure.
Signed-off-by: Luming Yu
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/hw_irq.h | 5 +
arch
From: Yu Luming
clean up do_syscall_trace_enter/leave and do_seccomp
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 5 -
arch/powerpc/kernel/ptrace/ptrace.c | 141
2 files changed, 146 deletions(-)
diff --git a/arch/powerpc/kernel
On Thu, Sep 12, 2024 at 12:23:29PM +0200, Christophe Leroy wrote:
>
>
> Le 12/09/2024 à 10:24, Luming Yu a écrit :
> > From: Yu Luming
> >
> > convert powerpc entry code in syscall and fault to use syscall_work
> > and irqentry_state as well a
On Fri, Sep 13, 2024 at 08:54:12AM +0200, Christophe Leroy wrote:
>
>
> Le 13/09/2024 à 03:40, Luming Yu a écrit :
> > On Thu, Sep 12, 2024 at 12:23:29PM +0200, Christophe Leroy wrote:
> > >
> > >
> > > Le 12/09/2024 à 10:24, L
On Fri, Sep 13, 2024 at 10:30:56AM +0200, Christophe Leroy wrote:
>
>
> Le 13/09/2024 à 09:38, Luming Yu a écrit :
> > On Fri, Sep 13, 2024 at 08:54:12AM +0200, Christophe Leroy wrote:
> > >
> > >
> > > Le 13/09/2024 à 03:40, Luming Yu a écrit :
> &
On Fri, Sep 13, 2024 at 02:15:40PM +0200, Christophe Leroy wrote:
>
>
> Le 13/09/2024 à 14:02, Luming Yu a écrit :
>
> > > ...
> > > nothing happens after that.
> > reproduced with ppc64_defconfig
> > [0.818972][T1] Run /init as init process
convert powerpc entry code in syscall and fault to use syscall_work
and irqentry_state as well as common calls implemented in generic
entry infrastructure.
Signed-off-by: Luming Yu
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/hw_irq.h | 5 +
arch/powerpc
cleanup do_syscall_trace_enter/leave and do_seccomp.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 5 -
arch/powerpc/kernel/ptrace/ptrace.c | 141
2 files changed, 146 deletions(-)
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc
generic irq entry support via generic irqentry is added for powerpc.
There may be duplciate calls and missing callbacks requires further
work.
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/entry-common.h | 32
arch/powerpc/kernel/interrupt.c | 51
fix irqentry in 32bit code path and hw_irq helpers.
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/hw_irq.h | 6 ++
arch/powerpc/kernel/interrupt.c | 4
include/linux/entry-common.h | 1 +
3 files changed, 11 insertions(+)
diff --git a/arch/powerpc/include/asm/hw_irq.h
To have lowlevel paca.h include high level entry-common.h cause
include file dependency mess. Split irqentry-state.h to have
the irqentry_state.h can be included in low level paca.h
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/paca.h | 2 ++
arch/powerpc/kernel/interrupt.c | 2
enable the common entry of user return notifier for powerpc as
a debug feature.
Signed-off-by Luming Yu
---
arch/powerpc/Kconfig| 1 +
arch/powerpc/include/asm/entry-common.h | 16
arch/powerpc/include/asm/thread_info.h | 2 ++
arch/powerpc/kernel
calls back to all registered user return notifier functions.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c
index 8c532cecbc60..609ba48034de 100644
--- a/arch
On Thu, Oct 24, 2024 at 04:43:04PM +0800, Luming Yu wrote:
> On Wed, Oct 23, 2024 at 12:53:47PM +1100, Michael Ellerman wrote:
> > "虞陆铭" writes:
> > >>Le 12/10/2024 à 05:56, Luming Yu a écrit :
> > >>> convert powerpc entry code in syscall and fault
On Fri, Oct 25, 2024 at 10:50:05AM +0800, Luming Yu wrote:
> On Thu, Oct 24, 2024 at 04:43:04PM +0800, Luming Yu wrote:
> > On Wed, Oct 23, 2024 at 12:53:47PM +1100, Michael Ellerman wrote:
> > > "虞陆铭" writes:
> > > >>Le 12/10/2024 à 05:56, Luming Yu a é
On Tue, Oct 15, 2024 at 05:42:45PM +0200, Thomas Gleixner wrote:
> On Sat, Oct 12 2024 at 11:56, Luming Yu wrote:
>
> > To have lowlevel paca.h include high level entry-common.h cause
> > include file dependency mess. Split irqentry-state.h to have
> > the irqentry_state.
generic irq entry support via generic irqentry is added for powerpc.
There may be duplciate calls and missing callbacks requires further
work.
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/entry-common.h | 32
arch/powerpc/kernel/interrupt.c | 51
To have lowlevel paca.h include high level entry-common.h cause
include file dependency mess. Split irqentry-state.h to have
the irqentry_state.h can be included in low level paca.h
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/paca.h | 2 ++
arch/powerpc/kernel/interrupt.c | 2
syscall_enter_from_user_mode, without touching common code, we have
to do
our own inference to recover the reasonable route to return, in order to
have correct errno
and syscall work behaviors,that are tested in seccomp_bpf 98 test cases.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 4
arch/powerpc
fix irqentry in 32bit code path and hw_irq helpers.
Signed-off-by: Luming Yu
---
arch/powerpc/include/asm/hw_irq.h | 6 ++
arch/powerpc/kernel/interrupt.c | 4
include/linux/entry-common.h | 1 +
3 files changed, 11 insertions(+)
diff --git a/arch/powerpc/include/asm/hw_irq.h
cleanup do_syscall_trace_enter/leave and do_seccomp.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 5 -
arch/powerpc/kernel/ptrace/ptrace.c | 141
2 files changed, 146 deletions(-)
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc
convert powerpc entry code in syscall and fault to use syscall_work
and irqentry_state as well as common calls implemented in generic
entry infrastructure.
Signed-off-by: Luming Yu
---
v1->v2: fix ppc syscall entry seccomp_bpf test errors for common entry
conversion.
---
arch/powerpc/Kcon
enable the common entry of user return notifier for powerpc as
a debug feature.
Signed-off-by Luming Yu
---
arch/powerpc/Kconfig| 1 +
arch/powerpc/include/asm/entry-common.h | 16
arch/powerpc/include/asm/thread_info.h | 2 ++
arch/powerpc/kernel
calls back to all registered user return notifier functions.
Signed-off-by: Luming Yu
---
arch/powerpc/kernel/interrupt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/interrupt.c b/arch/powerpc/kernel/interrupt.c
index 8c532cecbc60..609ba48034de 100644
--- a/arch
On Wed, Nov 13, 2024 at 08:06:04AM +0100, Thomas Gleixner wrote:
> On Mon, Nov 11 2024 at 11:19, Luming Yu wrote:
> > Due to the common layer and internal calls details are hidden from
> > the top level at the call side in ppc arch code, there are some
> > difficulties
On Thu, Nov 07, 2024 at 11:40:04AM +0800, Luming Yu wrote:
> On Tue, Nov 05, 2024 at 12:47:18PM +0800, Luming Yu wrote:
> > On Fri, Oct 25, 2024 at 10:50:05AM +0800, Luming Yu wrote:
> > > On Thu, Oct 24, 2024 at 04:43:04PM +0800, Luming Yu wrote:
> > > > On Wed, Oc
On Thu, Sep 19, 2024 at 01:22:21PM +1000, Michael Ellerman wrote:
> Luming Yu writes:
> > From: Yu Luming
> >
> > ppc always do its own tracking for batch tlb.
>
> I don't think it does? :)
>
> I think you're referring to the batch handling in
&g
On Sun, Sep 22, 2024 at 04:39:53PM +0530, Ritesh Harjani wrote:
> Luming Yu writes:
>
> > From: Yu Luming
> >
> > ppc always do its own tracking for batch tlb. By trivially enabling
> > the ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH in ppc, ppc arch can re-use
> > com
-off-by: Luming Yu
---
arch/powerpc/Kconfig| 1 +
arch/powerpc/include/asm/tlbbatch.h | 30 +
2 files changed, 31 insertions(+)
create mode 100644 arch/powerpc/include/asm/tlbbatch.h
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index
On Wed, Oct 23, 2024 at 12:53:47PM +1100, Michael Ellerman wrote:
> "虞陆铭" writes:
> >>Le 12/10/2024 à 05:56, Luming Yu a écrit :
> >>> convert powerpc entry code in syscall and fault to use syscall_work
> >>> and irqentry_state as well as c
On Tue, Nov 05, 2024 at 12:47:18PM +0800, Luming Yu wrote:
> On Fri, Oct 25, 2024 at 10:50:05AM +0800, Luming Yu wrote:
> > On Thu, Oct 24, 2024 at 04:43:04PM +0800, Luming Yu wrote:
> > > On Wed, Oct 23, 2024 at 12:53:47PM +1100, Michael Ellerman wrote:
> > > > &qu
On Mon, Dec 02, 2024 at 12:58:59AM +0530, Shrikanth Hegde wrote:
>
>
> On 11/26/24 16:23, Christophe Leroy wrote:
> >
> >
> > Le 16/11/2024 à 20:23, Shrikanth Hegde a écrit :
> > > Define preempt lazy bit for Powerpc. Use bit 9 which is free and within
> > > 16 bit range of NEED_RESCHED, so com
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