During a memcpy from a pmem device, if a machine check exception is
generated we end up in a panic. In case of fsdax read, this should
only result in a -EIO. Avoid MCE by implementing memcpy_mcsafe.
Before this patch series:
```
bash-4.4# mount -o dax /dev/pmem0 /mnt/pmem/
[ 7621.714094] Disablin
schedule_work() cannot be called from MCE exception context as MCE can
interrupt even in interrupt disabled context.
fixes: 733e4a4c ("powerpc/mce: hookup memory_failure for UE errors")
Suggested-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
Cc: sta...@vger.kernel.org # v4.15+
---
arch/p
From: Balbir Singh
The current code would fail on huge pages addresses, since the shift would
be incorrect. Use the correct page shift value returned by
__find_linux_pte() to get the correct physical address. The code is more
generic and can handle both regular and compound pages.
Fixes: ba41e1e
From: Reza Arbab
The function doesn't get used outside this file, so make it static.
Signed-off-by: Reza Arbab
Signed-off-by: Santosh Sivaraj
Reviewed-by: Nicholas Piggin
---
arch/powerpc/kernel/mce.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel
Certain architecture specific operating modes (e.g., in powerpc machine
check handler that is unable to access vmalloc memory), the
search_exception_tables cannot be called because it also searches the
module exception tables if entry is not found in the kernel exception
table.
Cc: Thomas Gleixner
From: Balbir Singh
The pmem infrastructure uses memcpy_mcsafe in the pmem layer so as to
convert machine check exceptions into a return value on failure in case
a machine check exception is encountered during the memcpy. The return
value is the number of bytes remaining to be copied.
This patch
If we take a UE on one of the instructions with a fixup entry, set nip
to continue execution at the fixup entry. Stop processing the event
further or print it.
Co-developed-by: Reza Arbab
Signed-off-by: Reza Arbab
Cc: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/include/a
Use memcpy_mcsafe() implementation to define copy_to_user_mcsafe()
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/uaccess.h | 14 ++
2 files changed, 15 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
in
On 2019-07-16 17:02:30 Tue, Hari Bathini wrote:
> Introduce callback functions for platform specific operations like
> register, unregister, invalidate & such. Also, define place-holders
> for the same on pSeries platform.
>
> Signed-off-by: Hari Bathini
> ---
> arch/powerpc/kernel/fadump-common
On Fri, Jun 28, 2019 at 09:38:26AM +0800, Xiaowei Bao wrote:
> Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately.
>
> Signed-off-by: Xiaowei Bao
> ---
> v2:
> - No change.
> v3:
> - modify the commit message.
>
> drivers/pci/controller/dwc/Kconfig | 20 ++--
> drivers/
First off:
Trim the CC list, you CC'ed maintainers (and mailing lists) for no
reasons whatsover.
Then, read this:
https://lore.kernel.org/linux-pci/20171026223701.ga25...@bhelgaas-glaptop.roam.corp.google.com/
and make your patches compliant please.
On Fri, Jun 28, 2019 at 09:38:25AM +0800, Xi
> -Original Message-
> From: Lorenzo Pieralisi
> Sent: 2019年8月12日 18:06
> To: Xiaowei Bao
> Cc: bhelg...@google.com; robh...@kernel.org; mark.rutl...@arm.com;
> shawn...@kernel.org; Leo Li ; kis...@ti.com;
> a...@arndb.de; gre...@linuxfoundation.org; M.h. Lian
> ; Mingkai Hu ; Roy Zang
> -Original Message-
> From: Lorenzo Pieralisi
> Sent: 2019年8月12日 18:12
> To: Xiaowei Bao ; kis...@ti.com
> Cc: bhelg...@google.com; robh...@kernel.org; mark.rutl...@arm.com;
> shawn...@kernel.org; Leo Li ; a...@arndb.de;
> gre...@linuxfoundation.org; M.h. Lian ; Mingkai
> Hu ; Roy Zang
On Mon, Aug 12, 2019 at 10:39:00AM +, Xiaowei Bao wrote:
>
>
> > -Original Message-
> > From: Lorenzo Pieralisi
> > Sent: 2019年8月12日 18:12
> > To: Xiaowei Bao ; kis...@ti.com
> > Cc: bhelg...@google.com; robh...@kernel.org; mark.rutl...@arm.com;
> > shawn...@kernel.org; Leo Li ; a...
> diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
> index 576f7d79ad4e..9d17e0695e35 100644
> --- a/drivers/usb/host/ehci-ppc-of.c
> +++ b/drivers/usb/host/ehci-ppc-of.c
> @@ -31,7 +31,7 @@ static const struct hc_driver ehci_ppc_of_hc_driver = {
>* generic hardw
kbuild test robot writes:
> Hi "Christopher,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on linus/master]
> [cannot apply to v5.3-rc4 next-20190809]
> [if your patch is applied to the wrong git tree, please drop us a note to
> help improve the system]
>
> url
Thiago Jung Bauermann writes:
> From: Anshuman Khandual
>
> LPPACA structures need to be shared with the host. Hence they need to be in
> shared memory. Instead of allocating individual chunks of memory for a
> given structure from memblock, a contiguous chunk of memory is allocated
> and then co
Thiago Jung Bauermann writes:
> From: Ryan Grimm
>
> User space might want to know it's running in a secure VM. It can't do
> a mfmsr because mfmsr is a privileged instruction.
>
> The solution here is to create a cpu attribute:
>
> /sys/devices/system/cpu/svm
>
> which will read 0 or 1 based on
The patch
ASoC: fsl_esai: Add compatible string for imx6ull
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.4
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours)
The patch
ASoC: fsl_esai: Add new compatible string for imx6ull
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.4
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hou
On Thu, 2019-08-08 at 12:48:26 UTC, Christophe Leroy wrote:
> Santa commit ebb9d30a6a74 ("powerpc/mm: any thread in one core can be
> the first to setup TLB1") removed the need to know the cpu_id in
> early_init_this_mmu(), but the call to smp_processor_id() which was
> marked __maybe_used remained
Hi,
[This is an automated email]
This commit has been processed because it contains a "Fixes:" tag,
fixing commit: ba41e1e1ccb9 powerpc/mce: Hookup derror (load/store) UE errors.
The bot has tested the following trees: v5.2.8, v4.19.66.
v5.2.8: Build OK!
v4.19.66: Failed to apply! Possible depe
Claudio Carvalho writes:
Some small suggestions below:
> +
> +* The privilege of a process is now determined by three MSR bits,
> + MSR(S, HV, PR). In each of the tables below the modes are listed
> + from least privilege to highest privilege. The higher privilege
> + modes ca
https://bugzilla.kernel.org/show_bug.cgi?id=204479
--- Comment #17 from Christophe Leroy (christophe.le...@c-s.fr) ---
Created attachment 284343
--> https://bugzilla.kernel.org/attachment.cgi?id=284343&action=edit
Disassembly of lib/raid6/altivec8.o
--
You are receiving this mail because:
You
On 2019-07-16 17:02:38 Tue, Hari Bathini wrote:
> Make RTAS calls to register and un-register for FADump. Also, update
> how fadump_region contents are diplayed to provide more information.
>
> Signed-off-by: Hari Bathini
> ---
> arch/powerpc/kernel/fadump-common.h |2
> arch/power
https://bugzilla.kernel.org/show_bug.cgi?id=204479
--- Comment #18 from Christophe Leroy (christophe.le...@c-s.fr) ---
The Oops occurs at 0x3c8:
3b0: 81 21 00 88 lwz r9,136(r1)
3b4: 13 67 dc c4 vxorv27,v7,v27
3b8: 7d 11 a8 ce lvx v8,r17,r21
3bc: 11 5f 5b 06
Tyrel Datwyler writes:
> On 8/2/19 12:29 PM, Nathan Lynch wrote:
>> diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
>> index 5faf0a64c92b..05824eb4323b 100644
>> --- a/arch/powerpc/kernel/rtas.c
>> +++ b/arch/powerpc/kernel/rtas.c
>> @@ -871,15 +871,17 @@ static int rtas_cpu_s
On Mon, Aug 12, 2019 at 07:37:51AM +0200, Christophe Leroy wrote:
>
>
> Le 12/08/2019 à 04:32, Nathan Chancellor a écrit :
> > Commit aea447141c7e ("powerpc: Disable -Wbuiltin-requires-header when
> > setjmp is used") disabled -Wbuiltin-requires-header because of a warning
> > about the setjmp an
> -Original Message-
> From: Gustavo A. R. Silva
> Sent: Sunday, August 11, 2019 7:22 PM
> To: Leo Li ; Zhang Wei ; Vinod
> Koul ; Dan Williams
> Cc: linuxppc-dev@lists.ozlabs.org; dmaeng...@vger.kernel.org; linux-
> ker...@vger.kernel.org; Gustavo A. R. Silva
> Subject: [PATCH] dmaeng
Michael Ellerman writes:
> Thiago Jung Bauermann writes:
>> From: Anshuman Khandual
>>
>> LPPACA structures need to be shared with the host. Hence they need to be in
>> shared memory. Instead of allocating individual chunks of memory for a
>> given structure from memblock, a contiguous chunk
Michael Ellerman writes:
> Thiago Jung Bauermann writes:
>> From: Ryan Grimm
>>
>> User space might want to know it's running in a secure VM. It can't do
>> a mfmsr because mfmsr is a privileged instruction.
>>
>> The solution here is to create a cpu attribute:
>>
>> /sys/devices/system/cpu/
Sasha Levin writes:
> Hi,
>
> [This is an automated email]
>
> This commit has been processed because it contains a "Fixes:" tag,
> fixing commit: ba41e1e1ccb9 powerpc/mce: Hookup derror (load/store) UE errors.
>
> The bot has tested the following trees: v5.2.8, v4.19.66.
>
> v5.2.8: Build OK!
>
> -Original Message-
> From: Lorenzo Pieralisi
> Sent: 2019年8月12日 19:36
> To: Xiaowei Bao
> Cc: kis...@ti.com; bhelg...@google.com; robh...@kernel.org;
> mark.rutl...@arm.com; shawn...@kernel.org; Leo Li
> ; a...@arndb.de; gre...@linuxfoundation.org; M.h.
> Lian ; Mingkai Hu ; Roy
> Zan
The PCIe controller of layerscape just have 4 BARs, BAR0 and BAR1
is 32bit, BAR3 and BAR4 is 64bit, this is determined by hardware,
so set the bar_fixed_64bit with 0x14.
Signed-off-by: Xiaowei Bao
---
v2:
- Replace value 0x14 with a macro.
v3:
- No change.
v4:
- send the patch again with '--to
Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately.
Signed-off-by: Xiaowei Bao
---
v2:
- No change.
v3:
- modify the commit message.
v4:
- send the patch again with '--to'.
drivers/pci/controller/dwc/Kconfig | 20 ++--
drivers/pci/controller/dwc/Makefile |3 ++-
2
Fixes an oops when calling the shared-processor spinlock implementation
from a non-SP LPAR. Also take this opportunity to refactor
SHARED_PROCESSOR a bit.
Reference: https://github.com/linuxppc/issues/issues/229
Changes since v3:
- Replace CONFIG_BOOK3S #ifdef with CONFIG_PPC_PSERIES in
is_s
Determining if a processor is in shared processor mode is not a constant
so don't hide it behind a #define.
Signed-off-by: Christopher M. Riedl
Reviewed-by: Andrew Donnellan
---
arch/powerpc/include/asm/spinlock.h | 24 ++--
1 file changed, 18 insertions(+), 6 deletions(-)
Booting w/ ppc64le_defconfig + CONFIG_PREEMPT results in the attached
kernel trace due to calling shared-processor spinlocks while not running
in an SPLPAR. Previously, the out-of-line spinlocks implementations were
selected based on CONFIG_PPC_SPLPAR at compile time without a runtime
shared-proces
The __rw_yield and __spin_yield locks only pertain to SPLPAR mode.
Rename them to make this relationship obvious.
Signed-off-by: Christopher M. Riedl
Reviewed-by: Andrew Donnellan
---
arch/powerpc/include/asm/spinlock.h | 6 --
arch/powerpc/lib/locks.c| 6 +++---
2 files changed
> On Aug 12, 2019, at 12:07 AM, Paul Mackerras wrote:
>
> ---
> arch/powerpc/include/asm/xive.h | 8
> arch/powerpc/kvm/book3s_xive.c| 31 ++
> arch/powerpc/sysdev/xive/common.c | 87 ---
> 3 files changed, 103 insertions(+), 23 deletion
On 11-08-19, 19:22, Gustavo A. R. Silva wrote:
> Mark switch cases where we are expecting to fall through.
>
> Fix the following warning (Building: powerpc-ppa8548_defconfig powerpc):
>
> drivers/dma/fsldma.c: In function ‘fsl_dma_chan_probe’:
> drivers/dma/fsldma.c:1165:26: warning: this stateme
Hi Doug,
Le 26/07/2019 à 00:30, Doug Crawford a écrit :
We have a ppc32 MPC8248 board that is working perfectly with the 4.19
kernel.
We have noticed two issues with the 5.2 kernel:
Have you tried 5.0 and 5.1 ?
1) If the new CONFIG_PPC_KUAP (kernel userspace access protection) is
enabled
On 8/12/19 2:52 PM, Santosh Sivaraj wrote:
> schedule_work() cannot be called from MCE exception context as MCE can
> interrupt even in interrupt disabled context.
>
> fixes: 733e4a4c ("powerpc/mce: hookup memory_failure for UE errors")
> Suggested-by: Mahesh Salgaonkar
> Signed-off-by: Santosh S
On 13/08/19 8:23 AM, Xiaowei Bao wrote:
> The PCIe controller of layerscape just have 4 BARs, BAR0 and BAR1
> is 32bit, BAR3 and BAR4 is 64bit, this is determined by hardware,
Do you mean BAR2 instead of BAR3 here?
Thanks
Kishon
> so set the bar_fixed_64bit with 0x14.
>
> Signed-off-by: Xiao
On Mon, Aug 12, 2019 at 10:52:11PM -0500, Lijun Pan wrote:
>
>
> > On Aug 12, 2019, at 12:07 AM, Paul Mackerras wrote:
[snip]
> > +static void cleanup_single_escalation(struct kvm_vcpu *vcpu,
> > + struct kvmppc_xive_vcpu *xc, int irq)
> > +{
> > + struct irq_
On Mon, Aug 12, 2019 at 03:07:05PM +1000, Paul Mackerras wrote:
> lbz r5, VCPU_XIVE_ESC_ON(r9)
> cmpwi r5, 0
> - beq 1f
> + beq 4f
> li r0, 0
> stb r0, VCPU_CEDED(r9)
> + li r6, XIVE_ESB_SET_PQ_10
> + b 1f
> +4: li r0
Commit 2874c5fd2842 ("treewide: Replace GPLv2 boilerplate/reference with
SPDX - rule 152") left an empty comment in machdep.h, as the boilerplate
was the only text in the comment. Remove the empty comment.
Signed-off-by: Jordan Niethe
---
arch/powerpc/include/asm/machdep.h | 3 ---
1 file change
On 2019-07-16 17:02:45 Tue, Hari Bathini wrote:
> Move code that supports processing the crash'ed kernel's memory
> preserved by firmware to platform specific callback functions.
>
> Signed-off-by: Hari Bathini
> ---
> arch/powerpc/kernel/fadump-common.h |6
> arch/powerpc/kernel/f
> -Original Message-
> From: Kishon Vijay Abraham I
> Sent: 2019年8月13日 12:36
> To: Xiaowei Bao ; lorenzo.pieral...@arm.com;
> bhelg...@google.com; M.h. Lian ; Mingkai Hu
> ; Roy Zang ;
> l.st...@pengutronix.de; tpie...@impinj.com; Leonard Crestez
> ; andrew.smir...@gmail.com;
> yue.w...@
The PCIe controller of layerscape just have 4 BARs, BAR0 and BAR1
is 32bit, BAR2 and BAR4 is 64bit, this is determined by hardware,
so set the bar_fixed_64bit with 0x14.
Signed-off-by: Xiaowei Bao
---
v2:
- Replace value 0x14 with a macro.
v3:
- No change.
v4:
- send the patch again with '--to
Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately.
Signed-off-by: Xiaowei Bao
---
v2:
- No change.
v3:
- modify the commit message.
v4:
- send the patch again with '--to'.
v5:
- No change.
drivers/pci/controller/dwc/Kconfig | 20 ++--
drivers/pci/controller/dwc/Makefil
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