On Tue, Oct 17, 2017 at 02:44:29PM +0100, Dave Martin wrote:
> arch/arm/kernel/debug.S:
>
> ENTRY(printascii)
> addruart_current r3, r1, r2
> b 2f
> 1: waituart r2, r3
> senduart r1, r3
> busyuart r2, r3
>
BOn Thu, Jun 08, 2017 at 03:25:50PM +0200, Christoph Hellwig wrote:
> +static int dmabounce_mapping_error(struct device *dev, dma_addr_t dma_addr)
> +{
> + if (dev->archdata.dmabounce)
> + return 0;
I'm not convinced that we need this check here:
dev->archdata.dmabounce =
On Fri, Jan 13, 2017 at 11:46:39AM +0100, Nicolas Dichtel wrote:
> This header file is exported, thus move it to uapi.
I'm taking this patch, but with the following commit log:
Due to the way kbuild works, this header was unintentionally exported
back in 2013 when it was created, despite it n
On Fri, Jan 13, 2017 at 05:01:01PM +0100, Nicolas Dichtel wrote:
> Please, do not remove the email subject when you reply. I restore it to
> ease the thread follow-up.
I mentioned it to David, and he says it's because the long list of
recipients is breaking his mailer. I've already posed the ques
On Mon, Jan 09, 2017 at 12:33:02PM +0100, Arnd Bergmann wrote:
> On Friday, January 6, 2017 10:43:53 AM CET Nicolas Dichtel wrote:
> >
> > diff --git a/arch/arm/include/asm/types.h b/arch/arm/include/asm/types.h
> > index a53cdb8f068c..c48fee3d7b3b 100644
> > --- a/arch/arm/include/asm/types.h
> >
On Fri, Jan 06, 2017 at 10:43:59AM +0100, Nicolas Dichtel wrote:
> diff --git a/arch/arm/include/uapi/asm/Kbuild
> b/arch/arm/include/uapi/asm/Kbuild
> index 46a76cd6acb6..607f702c2d62 100644
> --- a/arch/arm/include/uapi/asm/Kbuild
> +++ b/arch/arm/include/uapi/asm/Kbuild
> @@ -1,23 +1,6 @@
> #
On Wed, Nov 16, 2016 at 01:23:05PM +0100, Christian Borntraeger wrote:
> No need to duplicate the same define everywhere. Since
> the only user is stop-machine and the only provider is
> s390, we can use a default implementation of cpu_relax_yield
> in sched.h.
>
> Suggested-by: Russell King
> Si
On Tue, Nov 15, 2016 at 02:19:53PM +0100, Christian Borntraeger wrote:
> On 11/15/2016 01:30 PM, Russell King - ARM Linux wrote:
> > On Tue, Oct 25, 2016 at 11:03:11AM +0200, Christian Borntraeger wrote:
> >> For spinning loops people do often use barrier() or cpu_rela
On Tue, Oct 25, 2016 at 11:03:11AM +0200, Christian Borntraeger wrote:
> For spinning loops people do often use barrier() or cpu_relax().
> For most architectures cpu_relax and barrier are the same, but on
> some architectures cpu_relax can add some latency.
> For example on power,sparc64 and arc,
On Mon, Aug 22, 2016 at 08:33:11PM +0200, Mikko Rapeli wrote:
> xen/interface/xen.h is not exported from kernel headers so remove the
> dependency and provide needed defines for domid_t and xen_pfn_t if they
> are not already defined by some other e.g. Xen specific headers.
I'm confused. How did
On Tue, May 24, 2016 at 08:28:08AM +0200, Krzysztof Kozlowski wrote:
> Some of the non-exported functions do not modify passed dma_attrs so the
> pointer can point to const data.
>
> Signed-off-by: Krzysztof Kozlowski
Acked-by: Russell King
Thanks.
--
RMK's Patch system: http://www.armlinux.
On Fri, Feb 19, 2016 at 05:45:59AM -0800, Luis R. Rodriguez wrote:
> kprobe makes use of two custom sections:
>
> type name beginend
> init.data _kprobe_blacklist __start_kprobe_blacklist __stop_kprobe_blacklist
> text .kprobes.text __kprobes_te
On Mon, Jan 04, 2016 at 08:07:40AM -0800, Joe Perches wrote:
> On Mon, 2016-01-04 at 13:36 +0200, Michael S. Tsirkin wrote:
> > + my $all_barriers = join('|', (@barriers, @smp_barriers));
> > +
> > + if ($line =~ /\b($all_barriers)\(/) {
>
> It would be better to use /\b$all_ba
On Mon, Jan 04, 2016 at 02:54:20PM +0100, Peter Zijlstra wrote:
> On Mon, Jan 04, 2016 at 02:36:58PM +0100, Peter Zijlstra wrote:
> > On Sun, Jan 03, 2016 at 11:12:44AM +0200, Michael S. Tsirkin wrote:
> > > On Sat, Jan 02, 2016 at 11:24:38AM +0000, Russell King - ARM Linux wrot
On Thu, Dec 31, 2015 at 09:07:59PM +0200, Michael S. Tsirkin wrote:
> This defines __smp_xxx barriers for arm,
> for use by virtualization.
>
> smp_xxx barriers are removed as they are
> defined correctly by asm-generic/barriers.h
>
> This reduces the amount of arch-specific boiler-plate code.
>
On Thu, Dec 31, 2015 at 09:06:46PM +0200, Michael S. Tsirkin wrote:
> On arm smp_store_mb, read_barrier_depends, smp_read_barrier_depends,
> smp_store_release, smp_load_acquire, smp_mb__before_atomic and
> smp_mb__after_atomic match the asm-generic variants exactly. Drop the
> local definitions and
On Tue, Dec 22, 2015 at 03:45:19PM +, Stefano Stabellini wrote:
> The code builds, but of course it could not actually run on CPU_V6. But
> the use case for me is building drivers/xen/grant-table.c, which can
> only run on CPU_V7 anyway, so it is not a problem.
What I'm concerned about in this
On Tue, Dec 22, 2015 at 02:17:17PM +, Stefano Stabellini wrote:
> Hello Russell,
>
> Would you please consider this patch for the next merge window? It
> is a very old patch (March 2014) which has been left over.
This patch has some obvious problems...
> diff --git a/arch/arm/Kconfig b/arch/
On Fri, Nov 20, 2015 at 02:40:31PM +, Stefano Stabellini wrote:
> On Fri, 20 Nov 2015, Christopher Covington wrote:
> > Hi Stefano,
> >
> > On 11/20/2015 09:31 AM, Stefano Stabellini wrote:
> > > On Tue, 10 Nov 2015, Stefano Stabellini wrote:
> > >> On Thu, 5 Nov 2015, Stefano Stabellini wrote
On Mon, Sep 14, 2015 at 10:36:55AM +0100, Stefano Stabellini wrote:
> On Fri, 11 Sep 2015, Russell King - ARM Linux wrote:
> > If you'd like your ack on it, please send one, I can still do that.
>
> Acked-by: Stefano Stabellini
Sorry, that's a bit too late - I sent
On Fri, Sep 11, 2015 at 06:56:50PM +0100, Stefano Stabellini wrote:
> On Fri, 11 Sep 2015, Russell King - ARM Linux wrote:
> > On Fri, Sep 11, 2015 at 06:36:05PM +0100, Julien Grall wrote:
> > > On 11/09/15 18:32, Julien Grall wrote:
> > > > On 11/09/15 18:00,
On Fri, Sep 11, 2015 at 06:36:05PM +0100, Julien Grall wrote:
> On 11/09/15 18:32, Julien Grall wrote:
> > On 11/09/15 18:00, Russell King - ARM Linux wrote:
> >> On Fri, Sep 11, 2015 at 05:25:59PM +0100, Julien Grall wrote:
> >>> + /*
> >>> + * Privcmd
On Fri, Sep 11, 2015 at 05:25:59PM +0100, Julien Grall wrote:
> + /*
> + * Privcmd calls are issued by the userspace. We need to allow the
> + * kernel to access the userspace memory before issuing the hypercall.
> + */
> + uaccess_enable r4
> +
> + /* r4 is loaded now as
On Fri, Sep 11, 2015 at 03:56:38PM +0100, Julien Grall wrote:
> Well, we can't assume that the function will be called with uaccess
> disabled.
Please explain your reasoning.
The reason copy_from_user() et.al. need to save and restore the DACR is
because the DACR may be in one of two states on ol
On Fri, Sep 11, 2015 at 03:45:29PM +0100, Julien Grall wrote:
> Looking to the uaccess_save macro:
>
> .macro uaccess_save, tmp
> #ifdef CONFIG_CPU_SW_DOMAIN_PAN
> mrc p15, 0, \tmp, c3, c0, 0
> str \tmp, [sp, #S_FRAME_SIZE]
> #endif
> .endm
>
>
> It's sav
On Wed, May 20, 2015 at 05:40:39PM +0800, Jiang Liu wrote:
> diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
> index 350f188c92d2..baf8edebe26f 100644
> --- a/arch/arm/kernel/irq.c
> +++ b/arch/arm/kernel/irq.c
> @@ -140,7 +140,7 @@ int __init arch_probe_nr_irqs(void)
> static bool migr
On Fri, Mar 06, 2015 at 12:58:33PM +, David Vrabel wrote:
> diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
> index ce0786e..d8f535b 100644
> --- a/arch/arm/include/asm/uaccess.h
> +++ b/arch/arm/include/asm/uaccess.h
> @@ -306,6 +306,7 @@ do {
On Thu, Nov 20, 2014 at 10:39:32AM +, Stefano Stabellini wrote:
> On Thu, 20 Nov 2014, Russell King - ARM Linux wrote:
> > On Tue, Nov 18, 2014 at 04:49:21PM +, Stefano Stabellini wrote:
> > > ping?
> >
> > Sending something which wants my attention
On Tue, Nov 18, 2014 at 04:49:21PM +, Stefano Stabellini wrote:
> ping?
Sending something which wants my attention _To:_ me is always a good idea :)
The patch is fine in itself, but I have a niggle about the
is_device_dma_coherent() - provided this is only used in architecture
specific code,
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