On Fri, Jun 11, 2021 at 01:53:48PM -0700, Stephen Brennan wrote:
> Mike Rapoport writes:
> > From: Mike Rapoport
> >
> > There are no architectures that support DISCONTIGMEM left.
> >
> > Remove the configuration option and the dead code it was guarding in the
> > generic memory management code.
On Fri, Jun 11, 2021 at 08:53:38AM +0200, Christoph Hellwig wrote:
> On Tue, Jun 08, 2021 at 06:48:22PM -0700, Ira Weiny wrote:
> > I'm still not 100% sure that these flushes are needed but the are not
> > no-ops on
> > every arch. Would it be best to preserve them after the
> >
Commit a390bef7db1f ("usb: gadget: fsl_mxc_udc: Remove the driver")
didn't remove all the MXC related stuff which can cause build problem
for LS1021 when enabled again in Kconfig. This patch remove all the
remnants.
Signed-off-by: Li Yang
---
drivers/usb/gadget/udc/fsl_udc_core.c | 36
Mike Rapoport writes:
> From: Mike Rapoport
>
> There are no architectures that support DISCONTIGMEM left.
>
> Remove the configuration option and the dead code it was guarding in the
> generic memory management code.
>
> Signed-off-by: Mike Rapoport
> ---
> include/asm-generic/memory_model.h
On 2021/6/10 下午1:23, Christophe Leroy wrote:
With a config having PAGE_SIZE set to 256K, BTRFS build fails
with the following message
include/linux/compiler_types.h:326:38: error: call to
'__compiletime_assert_791' declared with attribute error: BUILD_BUG_ON failed:
(BTRFS_MAX_COMPRESSED
> On Jun 11, 2021, at 9:21 AM, David Sterba wrote:
>
> On Fri, Jun 11, 2021 at 12:58:58PM +, Chris Mason wrote:
>>> On Jun 10, 2021, at 12:20 PM, David Sterba wrote:
>>> On Thu, Jun 10, 2021 at 04:50:09PM +0200, Christophe Leroy wrote:
Le 10/06/2021 à 15:54, Chris Mason a écrit :
On Fri, Jun 11, 2021 at 07:10:57PM +, Christophe Leroy wrote:
> From: Sudeep Holla
>
> linux/processor.h has exactly same defination for spin_until_cond.
> Drop the redundant defination in asm/processor.h
>
Wow you must be real good at ML archaeology, this must have been at-least
3+ years
From: Sudeep Holla
This implementation uses spin_until_cond in wd_smp_lock including
neither linux/processor.h nor asm/processor.h
This patch includes linux/processor.h here for spin_until_cond usage.
Cc: Nicholas Piggin
Cc: Michael Ellerman
Signed-off-by: Sudeep Holla
Signed-off-by:
From: Sudeep Holla
linux/processor.h has exactly same defination for spin_until_cond.
Drop the redundant defination in asm/processor.h
Cc: Nicholas Piggin
Cc: Michael Ellerman
Signed-off-by: Sudeep Holla
Signed-off-by: Christophe Leroy
---
That's just a rebase
book3s/32 and 8xx don't use vmalloc for modules.
Print the modules area at startup as part of the virtual memory layout:
[0.00] Kernel virtual memory layout:
[0.00] * 0xffafc000..0xc000 : fixmap
[0.00] * 0xc900..0xffafc000 : vmalloc & ioremap
[0.00]
On 6/2/21 12:53 AM, Christoph Hellwig wrote:
> 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
> On Jun 10, 2021, at 12:20 PM, David Sterba wrote:
>
> On Thu, Jun 10, 2021 at 04:50:09PM +0200, Christophe Leroy wrote:
>>
>>
>> Le 10/06/2021 à 15:54, Chris Mason a écrit :
>>>
On Jun 10, 2021, at 1:23 AM, Christophe Leroy
wrote:
With a config having PAGE_SIZE set
I don't have the HW to verify the change. Hopefully I use the right
device struct for is_swiotlb_active.
v9 here: https://lore.kernel.org/patchwork/cover/1445081/
On Mon, Jun 7, 2021 at 11:28 AM Claire Chang wrote:
>
> On Sat, Jun 5, 2021 at 1:48 AM Will Deacon wrote:
> >
> > Hi Claire,
> >
> > On Thu, May 27, 2021 at 08:58:30PM +0800, Claire Chang wrote:
> > > This series implements mitigations
I'm not sure if this would break arch/x86/pci/sta2x11-fixup.c
swiotlb_late_init_with_default_size is called here
https://elixir.bootlin.com/linux/v5.13-rc5/source/arch/x86/pci/sta2x11-fixup.c#L60
On Fri, Jun 11, 2021 at 11:27 PM Claire Chang wrote:
>
> Always have the pointer to the swiotlb pool
If a device is not behind an IOMMU, we look up the device node and set
up the restricted DMA when the restricted-dma-pool is presented.
Signed-off-by: Claire Chang
---
drivers/of/address.c| 33 +
drivers/of/device.c | 3 +++
drivers/of/of_private.h | 6
Introduce the new compatible string, restricted-dma-pool, for restricted
DMA. One can specify the address and length of the restricted DMA memory
region by restricted-dma-pool in the reserved-memory node.
Signed-off-by: Claire Chang
---
.../reserved-memory/reserved-memory.txt | 36
The restricted DMA pool is preferred if available.
The restricted DMA pools provide a basic level of protection against the
DMA overwriting buffer contents at unexpected times. However, to protect
against general data leakage and system memory corruption, the system
needs to provide a way to lock
Add the functions, swiotlb_{alloc,free} to support the memory allocation
from restricted DMA pool.
Signed-off-by: Claire Chang
---
include/linux/swiotlb.h | 15 +++
kernel/dma/swiotlb.c| 35 +--
2 files changed, 48 insertions(+), 2 deletions(-)
Add a new wrapper __dma_direct_free_pages() that will be useful later
for swiotlb_free().
Signed-off-by: Claire Chang
---
kernel/dma/direct.c | 14 ++
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index
Add a new function, release_slots, to make the code reusable for supporting
different bounce buffer pools, e.g. restricted DMA pool.
Signed-off-by: Claire Chang
---
kernel/dma/swiotlb.c | 35 ---
1 file changed, 20 insertions(+), 15 deletions(-)
diff --git
Move the maintenance of alloc_size to find_slots for better code
reusability later.
Signed-off-by: Claire Chang
---
kernel/dma/swiotlb.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index e5ccc198d0a7..364c6c822063
Regardless of swiotlb setting, the restricted DMA pool is preferred if
available.
The restricted DMA pools provide a basic level of protection against the
DMA overwriting buffer contents at unexpected times. However, to protect
against general data leakage and system memory corruption, the system
Update is_swiotlb_active to add a struct device argument. This will be
useful later to allow for restricted DMA pool.
Signed-off-by: Claire Chang
---
drivers/gpu/drm/i915/gem/i915_gem_internal.c | 2 +-
drivers/gpu/drm/nouveau/nouveau_ttm.c| 2 +-
drivers/pci/xen-pcifront.c
Update is_swiotlb_buffer to add a struct device argument. This will be
useful later to allow for restricted DMA pool.
Signed-off-by: Claire Chang
---
drivers/iommu/dma-iommu.c | 12 ++--
drivers/xen/swiotlb-xen.c | 2 +-
include/linux/swiotlb.h | 7 ---
kernel/dma/direct.c
Add the initialization function to create restricted DMA pools from
matching reserved-memory nodes.
Signed-off-by: Claire Chang
---
include/linux/swiotlb.h | 3 +-
kernel/dma/Kconfig | 14
kernel/dma/swiotlb.c| 75 +
3 files changed, 91
Always have the pointer to the swiotlb pool used in struct device. This
could help simplify the code for other pools.
Signed-off-by: Claire Chang
---
drivers/of/device.c | 3 +++
include/linux/device.h | 4
include/linux/swiotlb.h | 8
kernel/dma/swiotlb.c| 8
4
Split the debugfs creation to make the code reusable for supporting
different bounce buffer pools, e.g. restricted DMA pool.
Signed-off-by: Claire Chang
---
kernel/dma/swiotlb.c | 23 ---
1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/kernel/dma/swiotlb.c
Add a new function, swiotlb_init_io_tlb_mem, for the io_tlb_mem struct
initialization to make the code reusable.
Signed-off-by: Claire Chang
---
kernel/dma/swiotlb.c | 53 ++--
1 file changed, 27 insertions(+), 26 deletions(-)
diff --git
This series implements mitigations for lack of DMA access control on
systems without an IOMMU, which could result in the DMA accessing the
system memory at unexpected times and/or unexpected addresses, possibly
leading to data leakage or corruption.
For example, we plan to use the PCI-e bus for
On Fri, 2021-06-11 at 08:02 +0200, Christophe Leroy wrote:
>Le 19/06/2019 à 14:57, Radu Rendec a écrit :
>> On Wed, 2019-06-19 at 10:36 +1000, Daniel Axtens wrote:
>>> Andreas Schwab <
>>> sch...@linux-m68k.org
writes:
>>>
On Jun 18 2019, Radu Rendec <
radu.ren...@gmail.com
>
On Fri, Jun 11, 2021 at 12:58:58PM +, Chris Mason wrote:
> > On Jun 10, 2021, at 12:20 PM, David Sterba wrote:
> > On Thu, Jun 10, 2021 at 04:50:09PM +0200, Christophe Leroy wrote:
> >> Le 10/06/2021 à 15:54, Chris Mason a écrit :
> On Jun 10, 2021, at 1:23 AM, Christophe Leroy
>
Introduce a mechanism to fire directed IPIs from a specified source CPU
to a specified target CPU and measure the difference in time incurred on
wakeup.
Also, introduce a mechanism to queue a HR timer on a specified CPU and
subsequently measure the time taken to wakeup the CPU.
Finally define a
The cpuidle latency selftest provides support to systematically extract,
analyse and present IPI and timer based wakeup latencies for each CPU
and each idle state available on the system.
The selftest leverages test-cpuidle_latency module's debugfs interface
to interact and extract latency
A kernel module + userspace driver to estimate the wakeup latency
caused by going into stop states. The motivation behind this program is
to find significant deviations behind advertised latency and residency
values.
The patchset measures latencies for two kinds of events. IPIs and Timers
As this
On Thu, Jun 10, 2021 at 05:23:02AM +, Christophe Leroy wrote:
> With a config having PAGE_SIZE set to 256K, BTRFS build fails
> with the following message
>
> include/linux/compiler_types.h:326:38: error: call to
> '__compiletime_assert_791' declared with attribute error: BUILD_BUG_ON
>
On Thu, Jun 10, 2021 at 10:35 AM Aneesh Kumar K.V
wrote:
> To avoid a race between rmap walk and mremap, mremap does take_rmap_locks().
> The lock was taken to ensure that rmap walk don't miss a page table entry due
> to
> PTE moves via move_pagetables(). The kernel does further optimization of
This prevents spurious rebuilds of the lds and then wrappers.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/boot/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index be84a72f8258..405acd2df160 100644
---
Add --orphan-handling=warn for vdsos, and adjust vdso linker scripts to
deal with orphan sections.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/vdso32/Makefile | 2 +-
arch/powerpc/kernel/vdso32/vdso32.lds.S | 3 ++-
arch/powerpc/kernel/vdso64/Makefile | 2 +-
On Fri, Jun 11, 2021 at 11:58:19AM +0200, Michal Suchánek wrote:
> On Fri, Jun 11, 2021 at 07:39:59PM +1000, Nicholas Piggin wrote:
> > Provide an option to build big-endian kernels using the ELFv2 ABI. This
> > works on GCC only so far, although it is rumored to work with clang
> > that's not
On Fri, Jun 11, 2021 at 07:39:59PM +1000, Nicholas Piggin wrote:
> Provide an option to build big-endian kernels using the ELFv2 ABI. This
> works on GCC only so far, although it is rumored to work with clang
> that's not been tested yet. A new module version check ensures the
> module ELF ABI
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_micfil.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index 3cf789ed6cbe..8c0c75ce9490 100644
---
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_ssi.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c
index 2b57b60431bb..ecbc1c365d5b 100644
---
It will cause null-ptr-deref if platform_get_resource_byname() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_xcvr.c | 4
1 file changed, 4 insertions(+)
diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_asrc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 0e1ad8efebd3..24b41881a68f 100644
---
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_aud2htx.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_aud2htx.c b/sound/soc/fsl/fsl_aud2htx.c
index a328697511f7..99ab7f0241cf 100644
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_sai.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 407a45e48eee..223fcd15bfcc 100644
---
patch #1 ~ #8:
Use devm_platform_get_and_ioremap_resource()
patch #9
check return value of platform_get_resource_byname()
Yang Yingliang (9):
ASoC: fsl_asrc: Use devm_platform_get_and_ioremap_resource()
ASoC: fsl_aud2htx: Use devm_platform_get_and_ioremap_resource()
ASoC: fsl_easrc:
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_easrc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c
index b1765c7d3bcd..19c3c3b5939e 100644
---
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_esai.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index f356ae5925af..a961f837cd09 100644
---
Use devm_platform_get_and_ioremap_resource() to simplify
code.
Signed-off-by: Yang Yingliang
---
sound/soc/fsl/fsl_spdif.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 2a76714eb8e6..d812a3ff5845 100644
---
Provide an option to build big-endian kernels using the ELFv2 ABI. This
works on GCC only so far, although it is rumored to work with clang
that's not been tested yet. A new module version check ensures the
module ELF ABI level matches the kernel build.
This can give big-endian kernels some
The elf_check_arch() function is used to test usermode binaries, but
kernel modules may have more specific requirements. powerpc would like
to test for ABI version compatibility.
Add an arch-overridable function elf_check_module_arch() that defaults
to elf_check_arch() and use it in
Since v3 I added Michael's module check for ELF ABI level. This requires
a change to core module code. If Jessica is happy with it it could go
via the powerpc tree.
Thanks,
Nick
Nicholas Piggin (2):
module: add elf_check_module_arch for module specific elf arch checks
powerpc/64: Option to
This avoids an (optional) compiler warning:
arch/powerpc/kernel/tau_6xx.c: In function 'TAU_init':
arch/powerpc/kernel/tau_6xx.c:204:30: error: too many arguments for format
[-Werror=format-extra-args]
tau_workq = alloc_workqueue("tau", WQ_UNBOUND, 1, 0);
Reported-by: Naresh Kamboju
Fixes:
Le 01/10/2018 à 21:47, Breno Leitao a écrit :
There is a bug in the flush_tmregs_to_thread() function, where it forces
TM SPRs to be saved to the thread even if the TM facility is disabled.
This bug could be reproduced using a simple test case:
mtspr(SPRN_TEXASR, XX);
sleep until
Le 01/10/2018 à 21:47, Breno Leitao a écrit :
The goal of this patch is to move function tm_enabled() to tm.h in order
to allow this function to be used by other files as an inline function.
This patch also removes the double inclusion of tm.h in the traps.c
source code. One inclusion is
On Tue, Jun 08, 2021 at 06:48:22PM -0700, Ira Weiny wrote:
> I'm still not 100% sure that these flushes are needed but the are not no-ops
> on
> every arch. Would it be best to preserve them after the
> memcpy_to/from_bvec()?
>
> Same thing in patch 11 and 14.
To me it seems kunmap_local
Redundant with what ?
Do you mean superfluous ?
Le 11/06/2021 à 04:59, Finn Thain a écrit :
This avoids an (optional) compiler warning:
arch/powerpc/kernel/tau_6xx.c: In function 'TAU_init':
arch/powerpc/kernel/tau_6xx.c:204:30: error: too many arguments for format
Le 19/06/2019 à 14:57, Radu Rendec a écrit :
On Wed, 2019-06-19 at 10:36 +1000, Daniel Axtens wrote:
Andreas Schwab <
sch...@linux-m68k.org
writes:
On Jun 18 2019, Radu Rendec <
radu.ren...@gmail.com
wrote:
Since you already have a working setup, it would be nice if you could
add a
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