Hi!
On Sat, Apr 18, 2020 at 08:28:53AM +, Christophe Leroy wrote:
> I'd like to use cr instead of gpr to return error condition from
> __get_user().
>
> I saw in GCC doc
> (https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html) that it is
> possible to use "y" as constraint to refer
Currently, the log-level of show_stack() depends on a platform
realization. It creates situations where the headers are printed with
lower log level or higher than the stacktrace (depending on
a platform or user).
Furthermore, it forces the logic decision from user to an architecture
side. In
On Sat, Apr 18, 2020 at 6:22 PM Wang Wenhu wrote:
> +#define DRIVER_NAME"sram_uapi"
> +
> +#define SRAM_UAPI_IOCTL_SET_SRAM_TYPE 0
> +#define SRAM_UAPI_IOCTL_ALLOC 1
> +#define SRAM_UAPI_IOCTL_FREE 2
> +
> +struct res_info {
> + u32 offset;
> + u32 size;
> +};
On Sat, Apr 18, 2020 at 6:22 PM Wang Wenhu wrote:
>
> A generic User-Kernel interface that allows a misc device created
> by it to support file-operations of ioctl and mmap to access SRAM
> memory from user level. Different kinds of SRAM alloction and free
> APIs could be added to the available
A generic User-Kernel interface that allows a misc device created
by it to support file-operations of ioctl and mmap to access SRAM
memory from user level. Different kinds of SRAM alloction and free
APIs could be added to the available array and could be configured
from user level.
Signed-off-by:
Include "linux/of_address.h" to fix the compile error for
mpc85xx_l2ctlr_of_probe() when compiling fsl_85xx_cache_sram.c.
CC arch/powerpc/sysdev/fsl_85xx_l2ctlr.o
arch/powerpc/sysdev/fsl_85xx_l2ctlr.c: In function ‘mpc85xx_l2ctlr_of_probe’:
arch/powerpc/sysdev/fsl_85xx_l2ctlr.c:90:11:
Include linux/io.h into fsl_85xx_cache_sram.c to fix the
implicit-declaration compile error when building Cache-Sram.
arch/powerpc/sysdev/fsl_85xx_cache_sram.c: In function ‘instantiate_cache_sram’:
arch/powerpc/sysdev/fsl_85xx_cache_sram.c:97:26: error: implicit declaration of
function
Function instantiate_cache_sram should not be linked into the init
section for its caller mpc85xx_l2ctlr_of_probe is none-__init.
Cc: Greg Kroah-Hartman
Cc: Arnd Bergmann
Cc: Christophe Leroy
Cc: Scott Wood
Cc: Michael Ellerman
Cc: Randy Dunlap
Cc: linuxppc-dev@lists.ozlabs.org
Fixes:
This series add a new misc device driver which act as an interface to
access the Cache-SRAM from user level. This is extremely helpful for
some user space applications that require high performance memory
accesses.
It also fixes the compile errors and warning of the Freescale MPC85xx
Cache-SRAM
On 04/14/2020 02:26 PM, Krzysztof Kozlowski wrote:
Although SPAPR_TCE_IOMMU itself can be compile tested on certain PowerPC
configurations, its presence makes arch/powerpc/kvm/Makefile to select
modules which do not build in such configuration.
The arch/powerpc/kvm/ modules use
From: Frederic Barrat
[ Upstream commit 49ce94b8677c7d7a15c4d7cbbb9ff1cd8387827b ]
The PCI hotplug framework is used to update the devices when a new
image is written to the FPGA.
Reviewed-by: Alastair D'Silva
Reviewed-by: Andrew Donnellan
Signed-off-by: Frederic Barrat
Signed-off-by:
From: Frederic Barrat
[ Upstream commit 05dd7da76986937fb288b4213b1fa10dbe0d1b33 ]
The pci_dn structure used to store a pointer to the struct pci_dev, so
taking a reference on the device was required. However, the pci_dev
pointer was later removed from the pci_dn structure, but the reference
From: Frederic Barrat
[ Upstream commit 658ab186dd22060408d94f5c5a6d02d809baba44 ]
On powernv, when removing a device through hotplug, the following
warning is logged:
Invalid refcount <.> on <...>
It may be incorrect, the refcount may be set to a higher value than 1
and be valid.
From: Nicholas Piggin
[ Upstream commit abc3fce76adbdfa8f87272c784b388cd20b46049 ]
This reverts commit ebb37cf3ffd39fdb6ec5b07111f8bb2f11d92c5f.
That commit does not play well with soft-masked irq state
manipulations in idle, interrupt replay, and possibly others due to
tracing code sometimes
From: Frederic Barrat
[ Upstream commit 49ce94b8677c7d7a15c4d7cbbb9ff1cd8387827b ]
The PCI hotplug framework is used to update the devices when a new
image is written to the FPGA.
Reviewed-by: Alastair D'Silva
Reviewed-by: Andrew Donnellan
Signed-off-by: Frederic Barrat
Signed-off-by:
From: Frederic Barrat
[ Upstream commit 658ab186dd22060408d94f5c5a6d02d809baba44 ]
On powernv, when removing a device through hotplug, the following
warning is logged:
Invalid refcount <.> on <...>
It may be incorrect, the refcount may be set to a higher value than 1
and be valid.
From: Frederic Barrat
[ Upstream commit 05dd7da76986937fb288b4213b1fa10dbe0d1b33 ]
The pci_dn structure used to store a pointer to the struct pci_dev, so
taking a reference on the device was required. However, the pci_dev
pointer was later removed from the pci_dn structure, but the reference
From: Ganesh Goudar
[ Upstream commit a95a0a1654f16366360399574e10efd87e867b39 ]
MCE handling on pSeries platform fails as recent rework to use common
code for pSeries and PowerNV in machine check error handling tries to
access per-cpu variables in realmode. The per-cpu variables may be
outside
From: Nicholas Piggin
[ Upstream commit abc3fce76adbdfa8f87272c784b388cd20b46049 ]
This reverts commit ebb37cf3ffd39fdb6ec5b07111f8bb2f11d92c5f.
That commit does not play well with soft-masked irq state
manipulations in idle, interrupt replay, and possibly others due to
tracing code sometimes
From: Frederic Barrat
[ Upstream commit 49ce94b8677c7d7a15c4d7cbbb9ff1cd8387827b ]
The PCI hotplug framework is used to update the devices when a new
image is written to the FPGA.
Reviewed-by: Alastair D'Silva
Reviewed-by: Andrew Donnellan
Signed-off-by: Frederic Barrat
Signed-off-by:
From: Frederic Barrat
[ Upstream commit 05dd7da76986937fb288b4213b1fa10dbe0d1b33 ]
The pci_dn structure used to store a pointer to the struct pci_dev, so
taking a reference on the device was required. However, the pci_dev
pointer was later removed from the pci_dn structure, but the reference
From: Frederic Barrat
[ Upstream commit 658ab186dd22060408d94f5c5a6d02d809baba44 ]
On powernv, when removing a device through hotplug, the following
warning is logged:
Invalid refcount <.> on <...>
It may be incorrect, the refcount may be set to a higher value than 1
and be valid.
From: Ganesh Goudar
[ Upstream commit a95a0a1654f16366360399574e10efd87e867b39 ]
MCE handling on pSeries platform fails as recent rework to use common
code for pSeries and PowerNV in machine check error handling tries to
access per-cpu variables in realmode. The per-cpu variables may be
outside
From: Nicholas Piggin
[ Upstream commit abc3fce76adbdfa8f87272c784b388cd20b46049 ]
This reverts commit ebb37cf3ffd39fdb6ec5b07111f8bb2f11d92c5f.
That commit does not play well with soft-masked irq state
manipulations in idle, interrupt replay, and possibly others due to
tracing code sometimes
From: Nicholas Piggin
[ Upstream commit abc3fce76adbdfa8f87272c784b388cd20b46049 ]
This reverts commit ebb37cf3ffd39fdb6ec5b07111f8bb2f11d92c5f.
That commit does not play well with soft-masked irq state
manipulations in idle, interrupt replay, and possibly others due to
tracing code sometimes
From: Ganesh Goudar
[ Upstream commit a95a0a1654f16366360399574e10efd87e867b39 ]
MCE handling on pSeries platform fails as recent rework to use common
code for pSeries and PowerNV in machine check error handling tries to
access per-cpu variables in realmode. The per-cpu variables may be
outside
Hi Christoph,
On Tue, Apr 14, 2020 at 02:25:05PM +0200, Christoph Hellwig wrote:
> +static inline bool dma_map_direct(struct device *dev,
> + const struct dma_map_ops *ops)
> +{
> + if (likely(!ops))
> + return true;
> + if (!dev->dma_ops_bypass)
> +
On Tue, Apr 14, 2020 at 04:26:30PM +0200, Krzysztof Kozlowski wrote:
> Reported-by: Geert Uytterhoeven
> Fixes: e93a1695d7fb ("iommu: Enable compile testing for some of drivers")
> Signed-off-by: Krzysztof Kozlowski
> ---
> drivers/iommu/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1
Christophe Leroy writes:
> Le 17/04/2020 à 23:09, Eric W. Biederman a écrit :
>>
>> To remove the use of set_fs in the coredump code there needs to be a
>> way to convert a kernel siginfo to a userspace compat siginfo.
>>
>> Call that function copy_siginfo_to_compat and factor it out of
>>
Excerpts from Alan Modra's message of April 18, 2020 9:40 am:
> On Fri, Apr 17, 2020 at 07:17:47PM +1000, Nicholas Piggin wrote:
>> I don't know much about dwarf, gdb still seems to recognize the signal
>> frame and unwind properly if I break inside a signal handler.
>
> Yes, the dwarf unwind
Le 23/03/2020 à 05:52, Christopher M. Riedl a écrit :
x86 supports the notion of a temporary mm which restricts access to
temporary PTEs to a single CPU. A temporary mm is useful for situations
where a CPU needs to perform sensitive operations (such as patching a
STRICT_KERNEL_RWX kernel)
Le 15/04/2020 à 18:22, Christopher M Riedl a écrit :
On April 15, 2020 4:12 AM Christophe Leroy wrote:
Le 15/04/2020 à 07:16, Christopher M Riedl a écrit :
On March 26, 2020 9:42 AM Christophe Leroy wrote:
This patch fixes the RFC series identified below.
It fixes three points:
-
Hi Segher,
I'd like to use cr instead of gpr to return error condition from
__get_user().
I saw in GCC doc
(https://gcc.gnu.org/onlinedocs/gcc/Machine-Constraints.html) that it is
possible to use "y" as constraint to refer to "Any condition register
field, cr0…cr7".
I tried the test
Le 14/04/2020 à 09:01, Christoph Hellwig a écrit :
Currently copy_string_kernel is just a wrapper around copy_strings that
simplifies the calling conventions and uses set_fs to allow passing a
kernel pointer. But due to the fact the we only need to handle a single
kernel argument pointer,
Le 17/04/2020 à 23:09, Eric W. Biederman a écrit :
To remove the use of set_fs in the coredump code there needs to be a
way to convert a kernel siginfo to a userspace compat siginfo.
Call that function copy_siginfo_to_compat and factor it out of
copy_siginfo_to_user32.
I find it a pitty
Fix the following coccicheck warning:
drivers/soc/fsl/guts.c:120:2-3: Unneeded semicolon
Reported-by: Hulk Robot
Signed-off-by: Jason Yan
---
drivers/soc/fsl/guts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
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