Previously context tracking was not done for asynchronous interrupts,
(those that run in interrupt context), and if those would cause a
reschedule when they exit, then scheduling functions (schedule_user,
preempt_schedule_irq) call exception_enter/exit to fix this up and
exit user context.
This is
This moves exception_enter/exit calls to wrapper functions for
synchronous interrupts. More interrupt handlers are covered by
this than previously.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 9
arch/powerpc/kernel/traps.c | 74 ++---
This moves the 64s/hash context tracking from hash_page_mm() to
__do_hash_fault(), so it's no longer called by OCXL / SPU
accelerators, which was certainly the wrong thing to be doing,
because those callers are not low level interrupt handlers, so
should have entered a kernel context tracking alrea
Add context tracking to the system call handler explicitly, and remove
_TIF_NOHZ.
This saves 35 cycles on gettid system call cost on POWER9 with a
CONFIG_NOHZ_FULL kernel.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/Kconfig | 1 -
arch/powerpc/include/asm/thread_info.h |
Simple helper for synchronous interrupt handlers (i.e., process-context)
to enable interrupts if it was taken in an interrupts-enabled context.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 7 +++
arch/powerpc/kernel/traps.c | 24 +++-
These will be used by subsequent patches.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/interrupt.h | 66
1 file changed, 66 insertions(+)
diff --git a/arch/powerpc/include/asm/interrupt.h
b/arch/powerpc/include/asm/interrupt.h
index 60363e5eeffa..7c7
Add wrapper functions (derived from x86 macros) for interrupt handler
functions. This allows interrupt entry code to be written in C.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/asm-prototypes.h | 29 ---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 -
arch/powerpc/in
This is required in order to allow more significant differences between
NMI type interrupt handlers and regular asynchronous handlers.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/traps.c | 31 +++-
arch/powerpc/perf/core-book3s.c | 35 ++--
Similar to the previous patch this makes interrupt handler function
types more regular so they can be wrapped with the next patch.
bad_page_fault and do_break are not performance critical.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/bug.h | 4 ++--
arch/powerpc/incl
Make mm fault handlers all just take the pt_regs * argument and load
DAR/DSISR from that. Make those that return a value return long.
This is done to make the function signatures match other handlers, which
will help with a future patch to add wrappers. Explicit arguments could
be added for perfor
The page fault handling still has some complex logic particularly around
hash table handling, in asm. Implement this in C instead.
Signed-off-by: Nicholas Piggin
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 +
arch/powerpc/kernel/exceptions-64s.S | 131 +++---
arc
From: Christophe Leroy
handle_page_fault() has some code dedicated to book3s/32 to
call do_break() when the DSI is a DABR match.
On other platforms, do_break() is handled separately.
Do the same for book3s/32, do it earlier in the process of DSI.
This change also avoid doing the test on ISI.
This adds interrupt handler wrapper functions, similar to the
generic / x86 code, and moves several common operations into them
from either asm or open coded in the individual handlers.
Since v1:
- Fixed a couple of compile issues
- Fixed perf weirdness (sometimes NMI, sometimes not)
- Also move i
From: Mathieu Desnoyers
Backport for 4.9 and 4.14
(cherry picked from commit d85be8a49e733dcd23674aa6202870d54bf5600d)
The placeholder for instruction selection should use the second
argument's operand, which is %1, not %0. This could generate incorrect
assembly code if the memory addressing of
From: Mathieu Desnoyers
Backport for 4.4
(cherry picked from commit d85be8a49e733dcd23674aa6202870d54bf5600d)
The placeholder for instruction selection should use the second
argument's operand, which is %1, not %0. This could generate incorrect
assembly code if the memory addressing of operand
> On 12-Jan-2021, at 3:08 PM, Jiri Olsa wrote:
>
> On Mon, Dec 28, 2020 at 09:14:14PM -0500, Athira Rajeev wrote:
>
> SNIP
>
>> c2799370 b backtrace_flag
>> c2799378 B radix_tree_node_cachep
>> c2799380 B __bss_stop
>> c27a B _end
>> c0080389 t icm
This is backport for 5.10
(cherry picked from commit 98bf2d3f4970179c702ef64db658e0553bc6ef3a)
When we have VMAP stack, exception prolog 1 sets r1, not r11.
When it is not an RTAS machine check, don't trash r1 because it is
needed by prolog 1.
Fixes: da7bb43ab9da ("powerpc/32: Fix vmap stack -
On Wed, 6 Jan 2021 14:18:30 -0600, Tyrel Datwyler wrote:
> The ibmvfc driver in its current form relies heavily on the host_lock. This
> patchset introduces a genric queue with its own queue lock and sent/free event
> list locks. This generic queue allows the driver to decouple the primary queue
>
On 1/12/2021 8:25 PM, Tomasz Figa wrote:
> On Wed, Jan 13, 2021 at 12:56 PM Florian Fainelli
> wrote:
>>
>>
>>
>> On 1/12/2021 6:29 PM, Tomasz Figa wrote:
>>> Hi Florian,
>>>
>>> On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli
>>> wrote:
On 1/11/21 11:48 PM, Claire Chang wrote:
>>
On Wed, Jan 13, 2021 at 12:56 PM Florian Fainelli wrote:
>
>
>
> On 1/12/2021 6:29 PM, Tomasz Figa wrote:
> > Hi Florian,
> >
> > On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli
> > wrote:
> >>
> >> On 1/11/21 11:48 PM, Claire Chang wrote:
> >>> On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli
On 1/12/2021 6:29 PM, Tomasz Figa wrote:
> Hi Florian,
>
> On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli wrote:
>>
>> On 1/11/21 11:48 PM, Claire Chang wrote:
>>> On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli
>>> wrote:
On 1/7/21 9:42 AM, Claire Chang wrote:
>> Can yo
Hi Florian,
On Wed, Jan 13, 2021 at 3:01 AM Florian Fainelli wrote:
>
> On 1/11/21 11:48 PM, Claire Chang wrote:
> > On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli
> > wrote:
> >>
> >> On 1/7/21 9:42 AM, Claire Chang wrote:
> >>
> Can you explain how ATF gets involved and to what extent i
On 2021-01-07 17:57, Konrad Rzeszutek Wilk wrote:
On Fri, Jan 08, 2021 at 01:39:18AM +0800, Claire Chang wrote:
Hi Greg and Konrad,
This change is intended to be non-arch specific. Any arch that lacks DMA access
control and has devices not behind an IOMMU can make use of it. Could you share
why
On 1/12/21 2:54 PM, Brian King wrote:
> On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
>> Introduce several new vhost fields for managing MQ state of the adapter
>> as well as initial defaults for MQ enablement.
>>
>> Signed-off-by: Tyrel Datwyler
>> ---
>> drivers/scsi/ibmvscsi/ibmvfc.c | 8
On 1/5/21 7:41 PM, Claire Chang wrote:
> Add the initialization function to create restricted DMA pools from
> matching reserved-memory nodes in the device tree.
>
> Signed-off-by: Claire Chang
> ---
> include/linux/device.h | 4 ++
> include/linux/swiotlb.h | 7 +-
> kernel/dma/Kconfig
On 1/7/21 1:19 PM, Konrad Rzeszutek Wilk wrote:
> On Thu, Jan 07, 2021 at 10:09:14AM -0800, Florian Fainelli wrote:
>> On 1/7/21 9:57 AM, Konrad Rzeszutek Wilk wrote:
>>> On Fri, Jan 08, 2021 at 01:39:18AM +0800, Claire Chang wrote:
Hi Greg and Konrad,
This change is intended to be n
On 1/5/21 7:41 PM, Claire Chang wrote:
> 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
> ---
[snip]
> +int of_dma_set_restricted_buffer(struct device *dev)
> +{
> + st
On 1/5/21 7:41 PM, Claire Chang wrote:
> Add the functions, swiotlb_alloc and swiotlb_free to support the
> memory allocation from restricted DMA pool.
>
> Signed-off-by: Claire Chang
> ---
[snip]
> diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
> index 30ccbc08e229..126e9b3354d6 100644
On 1/5/21 7:41 PM, Claire Chang wrote:
> 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 dat
On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
> index b0b0212344f3..24e1278acfeb 100644
> --- a/drivers/scsi/ibmvscsi/ibmvfc.c
> +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
> @@ -2418,18 +2418,79 @@ static struct ibmvfc_event *ibmv
On 1/11/21 5:12 PM, Tyrel Datwyler wrote:
> Introduce several new vhost fields for managing MQ state of the adapter
> as well as initial defaults for MQ enablement.
>
> Signed-off-by: Tyrel Datwyler
> ---
> drivers/scsi/ibmvscsi/ibmvfc.c | 8
> drivers/scsi/ibmvscsi/ibmvfc.h | 9 +++
Le 23/12/2020 à 10:38, Christophe Leroy a écrit :
In order to use xmon with powerpc 8xx, the serial driver
must provide udbg_putc() and udpb_getc().
Provide them via cpm_put_poll_char() and cpm_get_poll_char().
This requires CONFIG_CONSOLE_POLL.
Signed-off-by: Christophe Leroy
This patch
On 1/11/21 11:48 PM, Claire Chang wrote:
> On Fri, Jan 8, 2021 at 1:59 AM Florian Fainelli wrote:
>>
>> On 1/7/21 9:42 AM, Claire Chang wrote:
>>
Can you explain how ATF gets involved and to what extent it does help,
besides enforcing a secure region from the ARM CPU's perpsective? Does
The original PowerPC highmem mapping function used __set_pte_at() to denote
that the mapping is per CPU. This got lost with the conversion to the
generic implementation.
Override the default map function.
Fixes: 47da42b27a56 ("powerpc/mm/highmem: Switch to generic kmap atomic")
Signed-off-by: Tho
The kmap_local conversion wreckaged sparc, mips and powerpc as it missed
some of the details in the original implementation.
The following series addresses that.
Thanks,
tglx
---
arch/mips/include/asm/highmem.h |1 +
arch/sparc/include/asm/highmem.h |9 +
b/arch
set_pte_at() on MIPS invokes update_cache() which might recurse into
kmap_local(). Use set_pte() like the original MIPS highmem implementation
did.
Fixes: a4c33e83bca1 ("mips/mm/highmem: Switch to generic kmap atomic")
Reported-by: Paul Cercueil
Reported-by: Thomas Bogendoerfer
Signed-off-by: Th
The recent conversion to the generic kmap_local infrastructure failed to
assign the proper pre/post map/unmap flush operations for sparc.
Sparc requires cache flush before map/unmap and tlb flush afterwards.
Fixes: 3293efa97807 ("sparc/mm/highmem: Switch to generic kmap atomic")
Reported-by: Andr
The generic kmap_local() map function uses set_pte_at(), but MIPS requires
set_pte() and PowerPC wants __set_pte_at().
Provide arch_kmap_local_set_pte() and default it to set_pte_at().
Signed-off-by: Thomas Gleixner
---
mm/highmem.c |7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
On Sun, Dec 27, 2020 at 03:01:28PM +0100, Enrico Weigelt, metux IT consult
wrote:
> Move the pm_power_off callback into one global place and also add an
> function for conditionally calling it (when not NULL), in order to remove
> code duplication in all individual archs.
>
> Reported-by: kernel
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
From: Michael Ellerman
[ Upstream commit 445c6198fe7be03b7d38e66fe8d4b3187bc251d4 ]
Since commit 1d6cd3929360 ("modpost: turn missing MODULE_LICENSE()
into error") the ppc32_allmodconfig build fails with:
ERROR: modpost: missing MODULE_LICENSE() in
drivers/net/ethernet/freescale/fs_enet/mii-
From: Rasmus Villemoes
[ Upstream commit 887078de2a23689e29d6fa1b75d7cbc544c280be ]
Table 8-53 in the QUICC Engine Reference manual shows definitions of
fields up to a size of 192 bytes, not just 128. But in table 8-111,
one does find the text
Base Address of the Global Transmitter Parameter
Le 12/01/2021 à 02:13, Michael Ellerman a écrit :
Christophe Leroy writes:
From: Andreas Schwab
The second argument of __kernel_clock_gettime64 points to a struct
__kernel_timespec, with 64-bit time_t, so use the clock_gettime64 syscall
in the fallback function for the 32-bit vdso. Simila
On 12-12-20, 17:05, Christophe JAILLET wrote:
> A 'irq_dispose_mapping()' call is missing in the remove function.
> Add it.
>
> This is needed to undo the 'irq_of_parse_and_map() call from the probe
> function and already part of the error handling path of the probe function.
>
> It was added in
From: Andreas Schwab
The second argument of __kernel_clock_gettime64 points to a struct
__kernel_timespec, with 64-bit time_t, so use the clock_gettime64 syscall
in the fallback function for the 32-bit vdso. Similarily,
clock_getres_fallback should use the clock_getres_time64 syscall, though
it
On 11/01/2021 23:12, Tyrel Datwyler wrote:
Introduce several new vhost fields for managing MQ state of the adapter
as well as initial defaults for MQ enablement.
Signed-off-by: Tyrel Datwyler
---
drivers/scsi/ibmvscsi/ibmvfc.c | 8
drivers/scsi/ibmvscsi/ibmvfc.h | 9 +
2 fi
On Mon, Dec 28, 2020 at 09:14:14PM -0500, Athira Rajeev wrote:
SNIP
> c2799370 b backtrace_flag
> c2799378 B radix_tree_node_cachep
> c2799380 B __bss_stop
> c27a B _end
> c0080389 t icmp_checkentry [ip_tables]
> c00803890038 t ipt_alloc_initia
56 matches
Mail list logo
