On Mon, Nov 26, 2018 at 08:03:55AM +0100, Christophe LEROY wrote:
>
>
> Le 25/11/2018 à 22:44, Mike Rapoport a écrit :
> >There are several early memory allocations in arch/ code that use
> >memblock_phys_alloc() to allocate memory, convert the returned physical
> >address to the virtual address
Le 25/11/2018 à 22:44, Mike Rapoport a écrit :
There are several early memory allocations in arch/ code that use
memblock_phys_alloc() to allocate memory, convert the returned physical
address to the virtual address and then set the allocated memory to zero.
Exactly the same behaviour can be
Hi Kees,
On Mon, 26 Nov 2018 17:49:26 +1100 Stephen Rothwell
wrote:
>
> On Sun, 25 Nov 2018 21:46:20 -0800 Kees Cook wrote:
> >
> > Excellent! (Though, wait, does this mean everyone _else_ will see this
> > too? I'm worried that will be way too noisy...)
>
> Ah, yes, you may be right.
Le 25/11/2018 à 22:14, Darren Stevens a écrit :
There are verions of DEF_MMIO_IN_X and DEF_MMIO_OUT_X in asm/io.h
that contain a workaround for a limitation in gcc <=4.0, but the
minimum supported version of gcc is now 4.6, so these can be safely
removed.
This code is already gone, see
Hi Kees,
On Sun, 25 Nov 2018 21:46:20 -0800 Kees Cook wrote:
>
> Excellent! (Though, wait, does this mean everyone _else_ will see this
> too? I'm worried that will be way too noisy...)
Ah, yes, you may be right. everyone will see them :-(
I may have to figure out another way to do this for
On 11/24/2018 07:35 PM, Vinod Koul wrote:
> On 23-11-18, 15:24, Anshuman Khandual wrote:
>
>> --- a/drivers/dma/dmaengine.c
>> +++ b/drivers/dma/dmaengine.c
>> @@ -386,7 +386,8 @@ EXPORT_SYMBOL(dma_issue_pending_all);
>> static bool dma_chan_is_local(struct dma_chan *chan, int cpu)
>> {
>>
On 23-11-18, 08:33, Yangtao Li wrote:
> of_find_node_by_path() acquires a reference to the node
> returned by it and that reference needs to be dropped by its caller.
> g5_neo2_cpufreq_init() doesn't do that, so fix it.
>
> Signed-off-by: Yangtao Li
> Acked-by: Viresh Kumar
> ---
> Changes in
Signed-off-by: Nicholas Piggin
---
arch/powerpc/kernel/smp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 6e521a3f67ca..5366d9e7bed4 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@
The xmon debugger IPI handler waits in the callback function while
xmon is still active. This means they don't complete the IPI, and the
initiator always times out waiting for them.
Things manage to work after the timeout because there is some fallback
logic to keep NMI IPI state sane in case of
The NMI IPI timeout logic is broken, if __smp_send_nmi_ipi times out
on the first condition, delay_us will be zero which will send it into
the second spin loop with no timeout so it will spin forever.
Fixes: 5b73151fff63 ("powerpc: NMI IPI make NMI IPIs fully sychronous")
Signed-off-by: Nicholas
The first two patches fix timeouts and deadlocks using NMI IPIs.
The xmon deadlock fails with a timeout so it wasn't really noticed.
The infinite timeout only hits when the system is in really bad shape
or the sreset handler is broken somehow (e.g., running a guest and no
KVM test in the handler).
For some configs the build fails with:
arch/powerpc/mm/dump_linuxpagetables.c: In function 'populate_markers':
arch/powerpc/mm/dump_linuxpagetables.c:306:39: error: 'PKMAP_BASE' undeclared
(first use in this function)
arch/powerpc/mm/dump_linuxpagetables.c:314:50: error: 'LAST_PKMAP'
On Wed, 2018-10-31 at 14:57 +0800, Yuantian Tang wrote:
> From: Scott Wood
>
> The driver retains compatibility with old device trees, but we don't
> want the old nodes lying around to be copied, or used as a reference
> (some of the mux options are incorrect), or even just being clutter.
>
>
Hi Kees,
On Fri, 26 Oct 2018 01:34:33 +0100 Kees Cook wrote:
>
> So, if you it's possible to "seed" some new flags for linux-next, I'd
> be interested in making sure no new instances of warnings from
> -Wimplicit-fallthrough (gcc 7.1 and later) appear. VLAs will be gone
> in a couple days, so
There are several early memory allocations in arch/ code that use
memblock_phys_alloc() to allocate memory, convert the returned physical
address to the virtual address and then set the allocated memory to zero.
Exactly the same behaviour can be achieved simply by calling
memblock_alloc(): it
The pte_alloc_one_kernel() function allocates a page using
__get_free_page(GFP_KERNEL) when mm initialization is complete and
memblock_phys_alloc() on the earlier stages. The physical address of the
page allocated with memblock_phys_alloc() is converted to the virtual
address and in the both cases
Rather than use the memblock_alloc_base that returns a physical address and
then convert this address to the virtual one, use appropriate memblock
function that returns a virtual address.
There is a small functional change in the allocation of then NODE_DATA().
Instead of panicing if the local
Rather than use the memblock_alloc_base that returns a physical address and
then convert this address to the virtual one, use appropriate memblock
function that returns a virtual address.
Signed-off-by: Mike Rapoport
---
arch/microblaze/mm/init.c | 5 +++--
1 file changed, 3 insertions(+), 2
There are a several places that allocate memory using memblock APIs that
return a physical address, convert the returned address to the virtual
address and frequently also memset(0) the allocated range.
Update these places to use memblock allocators already returning a virtual
address; use
Hi,
These patches simplify some of the early memory allocations by replacing
usage of older memblock APIs with newer and shinier ones.
Quite a few places in the arch/ code allocated memory using a memblock API
that returns a physical address of the allocated area, then converted this
physical
There are verions of DEF_MMIO_IN_X and DEF_MMIO_OUT_X in asm/io.h
that contain a workaround for a limitation in gcc <=4.0, but the
minimum supported version of gcc is now 4.6, so these can be safely
removed.
Signed-off-by: Darren Stevens
---
diff --git a/arch/powerpc/include/asm/io.h
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