Le 28/05/2021 à 09:48, Daniel Axtens a écrit :
Make our stack-walking code KASAN-safe by using READ_ONCE_NOCHECK -
generic code, arm64, s390 and x86 all do this for similar sorts of
reasons: when unwinding a stack, we might touch memory that KASAN has
marked as being out-of-bounds. In ppc64 KA
Roman Bolshakov writes:
> On Sat, May 29, 2021 at 09:39:49AM +1000, Michael Ellerman wrote:
>> Roman Bolshakov writes:
>> > This reverts commit b0b3b2c78ec075cec4721986a95abbbac8c3da4f.
>> >
>> > Otherwise, direct kernel boot with initramfs no longer works in QEMU.
>> > It's broken in some bizarr
It is sometimes desirable to run a command on all cpus in xmon. A
typical scenario is to obtain the backtrace from all cpus in xmon if
there is a soft lockup. Add rudimentary support for the same. The
command to be run on all cpus should be prefixed with 'c#'. As an
example, 'c#t' will run 't' comm
On Tue, Jun 1, 2021 at 10:43 AM Baokun Li wrote:
>
> Fixes gcc '-Wunused-but-set-variable' warning:
>
> arch/powerpc/platforms/cell/spufs/switch.c: In function 'check_ppu_mb_stat':
> arch/powerpc/platforms/cell/spufs/switch.c:1660:6: warning:
> variable ‘dummy’ set but not used [-Wunused-but-set-v
Fixes gcc '-Wunused-but-set-variable' warning:
arch/powerpc/platforms/cell/spider-pci.c: In function 'spiderpci_io_flush':
arch/powerpc/platforms/cell/spider-pci.c:28:6: warning:
variable ‘val’ set but not used [-Wunused-but-set-variable]
It never used since introduction.
Signed-off-by: Baokun L
Fixes gcc '-Wunused-but-set-variable' warning:
arch/powerpc/platforms/cell/spufs/switch.c: In function 'check_ppu_mb_stat':
arch/powerpc/platforms/cell/spufs/switch.c:1660:6: warning:
variable ‘dummy’ set but not used [-Wunused-but-set-variable]
arch/powerpc/platforms/cell/spufs/switch.c: In func
Daniel Axtens wrote:
Make our stack-walking code KASAN-safe by using READ_ONCE_NOCHECK -
generic code, arm64, s390 and x86 all do this for similar sorts of
reasons: when unwinding a stack, we might touch memory that KASAN has
marked as being out-of-bounds. In ppc64 KASAN development, I hit this
s
On 5/20/21 11:50 PM, Christoph Hellwig wrote:
> Hi all,
>
> this series is the first part of cleaning up lifetimes and allocation of
> the gendisk and request_queue structure. It adds a new interface to
> allocate the disk and queue together for bio based drivers, and a helper
> for cleanup/free
Naveen N. Rao wrote:
+
+unsigned long ftrace_get_traced_func_if_no_stackframe(unsigned long ip,
unsigned long *stack)
+{
+ if (!is_ftrace_entry(ip))
+ return 0;
+
+ if (IS_ENABLED(CONFIG_PPC32))
+ return stack[11]; /* see MCOUNT_SAVE_FRAME */
+
+ if
"Naveen N. Rao" writes:
> Daniel Axtens wrote:
>> Make our stack-walking code KASAN-safe by using READ_ONCE_NOCHECK -
>> generic code, arm64, s390 and x86 all do this for similar sorts of
>> reasons: when unwinding a stack, we might touch memory that KASAN has
>> marked as being out-of-bounds. In
On Fri, 21 May 2021 12:18:36 +0530
"Naveen N. Rao" wrote:
> In preparation to add support for stack tracer to powerpc, move code to
> save stack trace and to calculate the frame sizes into a separate weak
> function. Also provide access to some of the data structures used by the
> stack trace cod
On Mon, May 31, 2021 at 04:12:15PM +0800, Wesley Sheng wrote:
> Replace "It" with "If", since it is a conditional statement.
>
> Signed-off-by: Wesley Sheng
Applied to pci/error for v5.14 with Krzysztof's reviewed-by and
subject "Documentation: PCI: Fix typo in pci-error-recovery.rst" to
match p
On Thu, 27 May 2021 18:34:09 +0200, Nicolas Cavallari wrote:
> Otherwise, when compiled as module, a WARN_ON is triggered:
>
> WARNING: CPU: 0 PID: 5 at sound/core/init.c:208 snd_card_new+0x310/0x39c [snd]
> [...]
> CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.10.39 #1
> Hardware name: Freescale
On Mon, May 31, 2021 at 4:24 AM Daniel Borkmann wrote:
> On 5/29/21 8:48 PM, Paul Moore wrote:
> [...]
> > Daniel's patch side steps that worry by just doing the lockdown
> > permission check when the BPF program is loaded, but that isn't a
> > great solution if the policy changes afterward. I wa
On Fri, May 28, 2021 at 11:29 AM Nathan Chancellor wrote:
>
> A change in clang 13 results in the __lwsync macro being defined as
> __builtin_ppc_lwsync, which emits 'lwsync' or 'msync' depending on what
> the target supports.
Indeed,
$ clang --target=powerpc64le-linux-gnu -mcpu=e500 -m32
for exa
General source cleanups and improved logging messages.
Signed-off-by: Geoff Levand
---
drivers/net/ethernet/toshiba/ps3_gelic_net.c | 395 ++-
1 file changed, 216 insertions(+), 179 deletions(-)
diff --git a/drivers/net/ethernet/toshiba/ps3_gelic_net.c
b/drivers/net/ethernet/to
Hi,
This is a set of patches that fix various DMA related problems in the PS3
device drivers, and add better error checking and improved message logging.
The gelic network driver had a number of problems and most of the changes are
in it's sources.
Please consider.
-Geoff
The following changes
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dma_region structure and set
the device structure's dma_mask pointer to point to this
Create two new structures, struct gelic_hw_regs and struct gelic_chain_link,
and replace the corresponding members of struct gelic_descr with the new
structures. struct gelic_hw_regs holds the register variables used by the
gelic hardware device. struct gelic_chain_link holds variables used to
ma
To aid debugging, add a new PS3 kernel config option
PS3_VERBOSE_RESULT that, when enabled, will print more
verbose messages for the result of LV1 hypercalls.
Signed-off-by: Geoff Levand
---
arch/powerpc/include/asm/ps3.h | 2 +-
arch/powerpc/platforms/ps3/Kconfig | 9 +
2 files chan
To aid debugging PS3 boot problems change the log level
of several PS3 device errors from pr_debug to pr_warn.
Signed-off-by: Geoff Levand
---
arch/powerpc/platforms/ps3/system-bus.c | 9 +
drivers/ps3/ps3-vuart.c | 2 +-
drivers/ps3/ps3av.c | 22 +++
From: Tom Rix
With MPC8XXFADS, there is this linker error
ppc64-linux-ld: m8xx_setup.o: in function `cpm_cascade':
m8xx_setup.c: undefined reference to `cpm_get_irq'
cpm_get_irq() is conditionally complied by CPM1
So add a select, like the other plaforms
Signed-off-by: Tom Rix
---
arch/powerp
From: Tom Rix
With gcc 10.3, there is this compiler error
compiler.h:56:26: error: this statement may
fall through [-Werror=implicit-fallthrough=]
mpc52xx_gpt.c:586:2: note: here
586 | case WDIOC_GETTIMEOUT:
| ^~~~
So add the fallthrough pseudo keyword.
Signed-off-by: Tom Rix
---
From: Suraj Jitindar Singh
The POWER9 vCPU TLB management code assumes all threads in a core share
a TLB, and that TLBIEL execued by one thread will invalidate TLBs for
all threads. This is not the case for SMT8 capable POWER9 and POWER10
(big core) processors, where the TLB is split between grou
Powerpc 44x has two bits for exec protection in TLBs: one
for user (UX) and one for superviser (SX).
Clear SX on user pages in TLB miss handlers to provide KUEP.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/nohash/32/mmu-44x.h | 1 +
arch/powerpc/kernel/head_44x.S
Factour out a helper to initialize a simple single hw queue tag_set from
blk_mq_init_sq_queue. This will allow to phase out blk_mq_init_sq_queue
in favor of a more symmetric and general API.
Signed-off-by: Christoph Hellwig
---
block/blk-mq.c | 32 ++--
inclu
Hi all,
this series is the scond part of cleaning up lifetimes and allocation of
the gendisk and request_queue structure. It adds a new interface to
allocate the disk and queue together for blk based drivers, and uses that
in all drivers that do not have any caveats in their gendisk and
request_q
Don't return the passed in request_queue but a normal error code, and
drop the elevator_init argument in favor of just calling elevator_init_mq
directly from dm-rq.
Signed-off-by: Christoph Hellwig
---
block/blk-mq.c | 36 ++--
block/blk.h |
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/block/virtio_blk.c | 26 +++---
1 file changed, 7 insertions(+), 19 deletions(-)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_bl
Add a new API to allocate a gendisk including the request_queue for use
with blk-mq based drivers. This is to avoid boilerplate code in drivers.
Signed-off-by: Christoph Hellwig
---
block/blk-mq.c | 19 +++
include/linux/blk-mq.h | 12
2 files changed, 31 in
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/block/paride/pcd.c | 19 ---
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
ind
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/block/paride/pf.c | 18 +++---
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index b
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/memstick/core/ms_block.c | 25 ++---
1 file changed, 10 insertions(+), 15 deletions(-)
diff --git a/drivers/memstick/core/ms_block.c b/drivers/mem
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/memstick/core/mspro_block.c | 26 +++---
1 file changed, 11 insertions(+), 15 deletions(-)
diff --git a/drivers/memstick/core/mspro_block.c
b/dri
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/mtd/mtd_blkdevs.c | 48 ++-
1 file changed, 22 insertions(+), 26 deletions(-)
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/block/ps3disk.c | 36 ++--
1 file changed, 14 insertions(+), 22 deletions(-)
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3d
Use the blk_mq_alloc_disk API to simplify the gendisk and request_queue
allocation.
Signed-off-by: Christoph Hellwig
---
drivers/block/swim3.c | 33 ++---
1 file changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
ind
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