* [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part
@ 2014-08-04 16:21 Ulrich Hecht
2014-08-05 1:15 ` Simon Horman
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Ulrich Hecht @ 2014-08-04 16:21 UTC (permalink / raw)
To: linux-sh
From: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Since APMU resource data were not common data of the R-Car series,
it was separated.
Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
[uli: moved header file out of arch/arm/mach-shmobile/include/mach]
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
---
This is needed for r8a7794 which has a set of CPU cores different from the
other Gen2s.
CU
Uli
arch/arm/mach-shmobile/common.h | 5 -----
arch/arm/mach-shmobile/platsmp-apmu.c | 27 +++++++++------------------
arch/arm/mach-shmobile/platsmp-apmu.h | 34 ++++++++++++++++++++++++++++++++++
arch/arm/mach-shmobile/smp-r8a7790.c | 16 +++++++++++++++-
arch/arm/mach-shmobile/smp-r8a7791.c | 16 +++++++++++++++-
5 files changed, 73 insertions(+), 25 deletions(-)
create mode 100644 arch/arm/mach-shmobile/platsmp-apmu.h
diff --git a/arch/arm/mach-shmobile/common.h b/arch/arm/mach-shmobile/common.h
index 9805608..cb3ecb7 100644
--- a/arch/arm/mach-shmobile/common.h
+++ b/arch/arm/mach-shmobile/common.h
@@ -21,11 +21,6 @@ extern void shmobile_boot_scu(void);
extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
extern void shmobile_smp_scu_cpu_die(unsigned int cpu);
extern int shmobile_smp_scu_cpu_kill(unsigned int cpu);
-extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus);
-extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
- struct task_struct *idle);
-extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
-extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
struct clk;
extern int shmobile_clk_init(void);
extern void shmobile_handle_irq_intc(struct pt_regs *);
diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c
index 2c06810..f483b56 100644
--- a/arch/arm/mach-shmobile/platsmp-apmu.c
+++ b/arch/arm/mach-shmobile/platsmp-apmu.c
@@ -1,6 +1,7 @@
/*
* SMP support for SoCs with APMU
*
+ * Copyright (C) 2014 Renesas Electronics Corporation
* Copyright (C) 2013 Magnus Damm
*
* This program is free software; you can redistribute it and/or modify
@@ -22,6 +23,7 @@
#include <asm/smp_plat.h>
#include <asm/suspend.h>
#include "common.h"
+#include "platsmp-apmu.h"
static struct {
void __iomem *iomem;
@@ -83,28 +85,15 @@ static void apmu_init_cpu(struct resource *res, int cpu, int bit)
pr_debug("apmu ioremap %d %d %pr\n", cpu, bit, res);
}
-static struct {
- struct resource iomem;
- int cpus[4];
-} apmu_config[] = {
- {
- .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
- .cpus = { 0, 1, 2, 3 },
- },
- {
- .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
- .cpus = { 0x100, 0x101, 0x102, 0x103 },
- }
-};
-
-static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
+static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit),
+ struct rcar_apmu_config *apmu_config, int num)
{
u32 id;
int k;
int bit, index;
bool is_allowed;
- for (k = 0; k < ARRAY_SIZE(apmu_config); k++) {
+ for (k = 0; k < num; k++) {
/* only enable the cluster that includes the boot CPU */
is_allowed = false;
for (bit = 0; bit < ARRAY_SIZE(apmu_config[k].cpus); bit++) {
@@ -128,14 +117,16 @@ static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
}
}
-void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus)
+void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
+ struct rcar_apmu_config *apmu_config,
+ int num)
{
/* install boot code shared by all CPUs */
shmobile_boot_fn = virt_to_phys(shmobile_smp_boot);
shmobile_boot_arg = MPIDR_HWID_BITMASK;
/* perform per-cpu setup */
- apmu_parse_cfg(apmu_init_cpu);
+ apmu_parse_cfg(apmu_init_cpu, apmu_config, num);
}
#ifdef CONFIG_SMP
diff --git a/arch/arm/mach-shmobile/platsmp-apmu.h b/arch/arm/mach-shmobile/platsmp-apmu.h
new file mode 100644
index 0000000..99d2c6f
--- /dev/null
+++ b/arch/arm/mach-shmobile/platsmp-apmu.h
@@ -0,0 +1,34 @@
+/*
+ * rmobile apmu definition
+ *
+ * Copyright (C) 2014 Renesas Electronics Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef PLATSMP_APMU_H
+#define PLATSMP_APMU_H
+
+#include <linux/ioport.h>
+
+struct rcar_apmu_config {
+ struct resource iomem;
+ int cpus[4];
+};
+
+extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
+ struct rcar_apmu_config *apmu_config,
+ int num);
+extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
+ struct task_struct *idle);
+extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
+extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
+
+#endif /* PLATSMP_APMU_H */
diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c
index 2311694..9c3da13 100644
--- a/arch/arm/mach-shmobile/smp-r8a7790.c
+++ b/arch/arm/mach-shmobile/smp-r8a7790.c
@@ -21,6 +21,7 @@
#include <asm/smp_plat.h>
#include "common.h"
+#include "platsmp-apmu.h"
#include "pm-rcar.h"
#include "r8a7790.h"
@@ -34,10 +35,23 @@ static struct rcar_sysc_ch r8a7790_ca7_scu = {
.isr_bit = 21, /* CA7-SCU */
};
+static struct rcar_apmu_config r8a7790_apmu_config[] = {
+ {
+ .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
+ .cpus = { 0, 1, 2, 3 },
+ },
+ {
+ .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
+ .cpus = { 0x100, 0x0101, 0x102, 0x103 },
+ }
+};
+
static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
- shmobile_smp_apmu_prepare_cpus(max_cpus);
+ shmobile_smp_apmu_prepare_cpus(max_cpus,
+ r8a7790_apmu_config,
+ ARRAY_SIZE(r8a7790_apmu_config));
/* turn on power to SCU */
r8a7790_pm_init();
diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
index f743386..96e392c 100644
--- a/arch/arm/mach-shmobile/smp-r8a7791.c
+++ b/arch/arm/mach-shmobile/smp-r8a7791.c
@@ -21,13 +21,27 @@
#include <asm/smp_plat.h>
#include "common.h"
+#include "platsmp-apmu.h"
#include "r8a7791.h"
#include "rcar-gen2.h"
+static struct rcar_apmu_config r8a7791_apmu_config[] = {
+ {
+ .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
+ .cpus = { 0, 1, 2, 3 },
+ },
+ {
+ .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
+ .cpus = { 0x100, 0x0101, 0x102, 0x103 },
+ }
+};
+
static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
{
/* let APMU code install data related to shmobile_boot_vector */
- shmobile_smp_apmu_prepare_cpus(max_cpus);
+ shmobile_smp_apmu_prepare_cpus(max_cpus,
+ r8a7791_apmu_config,
+ ARRAY_SIZE(r8a7791_apmu_config));
r8a7791_pm_init();
}
--
1.8.4.5
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part
2014-08-04 16:21 [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part Ulrich Hecht
@ 2014-08-05 1:15 ` Simon Horman
2014-08-05 5:39 ` Magnus Damm
2014-08-05 6:54 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Simon Horman @ 2014-08-05 1:15 UTC (permalink / raw)
To: linux-sh
On Mon, Aug 04, 2014 at 06:21:16PM +0200, Ulrich Hecht wrote:
> From: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
>
> Since APMU resource data were not common data of the R-Car series,
> it was separated.
>
> Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
> [uli: moved header file out of arch/arm/mach-shmobile/include/mach]
> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
> ---
>
> This is needed for r8a7794 which has a set of CPU cores different from the
> other Gen2s.
So unfortunate but given the facts this approach seems reasonable to me.
Magnus (CCed), do you have an opinion on this?
>
> CU
> Uli
>
>
> arch/arm/mach-shmobile/common.h | 5 -----
> arch/arm/mach-shmobile/platsmp-apmu.c | 27 +++++++++------------------
> arch/arm/mach-shmobile/platsmp-apmu.h | 34 ++++++++++++++++++++++++++++++++++
> arch/arm/mach-shmobile/smp-r8a7790.c | 16 +++++++++++++++-
> arch/arm/mach-shmobile/smp-r8a7791.c | 16 +++++++++++++++-
> 5 files changed, 73 insertions(+), 25 deletions(-)
> create mode 100644 arch/arm/mach-shmobile/platsmp-apmu.h
>
> diff --git a/arch/arm/mach-shmobile/common.h b/arch/arm/mach-shmobile/common.h
> index 9805608..cb3ecb7 100644
> --- a/arch/arm/mach-shmobile/common.h
> +++ b/arch/arm/mach-shmobile/common.h
> @@ -21,11 +21,6 @@ extern void shmobile_boot_scu(void);
> extern void shmobile_smp_scu_prepare_cpus(unsigned int max_cpus);
> extern void shmobile_smp_scu_cpu_die(unsigned int cpu);
> extern int shmobile_smp_scu_cpu_kill(unsigned int cpu);
> -extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus);
> -extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
> - struct task_struct *idle);
> -extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
> -extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
> struct clk;
> extern int shmobile_clk_init(void);
> extern void shmobile_handle_irq_intc(struct pt_regs *);
> diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c
> index 2c06810..f483b56 100644
> --- a/arch/arm/mach-shmobile/platsmp-apmu.c
> +++ b/arch/arm/mach-shmobile/platsmp-apmu.c
> @@ -1,6 +1,7 @@
> /*
> * SMP support for SoCs with APMU
> *
> + * Copyright (C) 2014 Renesas Electronics Corporation
> * Copyright (C) 2013 Magnus Damm
> *
> * This program is free software; you can redistribute it and/or modify
> @@ -22,6 +23,7 @@
> #include <asm/smp_plat.h>
> #include <asm/suspend.h>
> #include "common.h"
> +#include "platsmp-apmu.h"
>
> static struct {
> void __iomem *iomem;
> @@ -83,28 +85,15 @@ static void apmu_init_cpu(struct resource *res, int cpu, int bit)
> pr_debug("apmu ioremap %d %d %pr\n", cpu, bit, res);
> }
>
> -static struct {
> - struct resource iomem;
> - int cpus[4];
> -} apmu_config[] = {
> - {
> - .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
> - .cpus = { 0, 1, 2, 3 },
> - },
> - {
> - .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
> - .cpus = { 0x100, 0x101, 0x102, 0x103 },
> - }
> -};
> -
> -static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
> +static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit),
> + struct rcar_apmu_config *apmu_config, int num)
> {
> u32 id;
> int k;
> int bit, index;
> bool is_allowed;
>
> - for (k = 0; k < ARRAY_SIZE(apmu_config); k++) {
> + for (k = 0; k < num; k++) {
> /* only enable the cluster that includes the boot CPU */
> is_allowed = false;
> for (bit = 0; bit < ARRAY_SIZE(apmu_config[k].cpus); bit++) {
> @@ -128,14 +117,16 @@ static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit))
> }
> }
>
> -void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus)
> +void __init shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
> + struct rcar_apmu_config *apmu_config,
> + int num)
> {
> /* install boot code shared by all CPUs */
> shmobile_boot_fn = virt_to_phys(shmobile_smp_boot);
> shmobile_boot_arg = MPIDR_HWID_BITMASK;
>
> /* perform per-cpu setup */
> - apmu_parse_cfg(apmu_init_cpu);
> + apmu_parse_cfg(apmu_init_cpu, apmu_config, num);
> }
>
> #ifdef CONFIG_SMP
> diff --git a/arch/arm/mach-shmobile/platsmp-apmu.h b/arch/arm/mach-shmobile/platsmp-apmu.h
> new file mode 100644
> index 0000000..99d2c6f
> --- /dev/null
> +++ b/arch/arm/mach-shmobile/platsmp-apmu.h
> @@ -0,0 +1,34 @@
> +/*
> + * rmobile apmu definition
> + *
> + * Copyright (C) 2014 Renesas Electronics Corporation
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; version 2 of the License.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef PLATSMP_APMU_H
> +#define PLATSMP_APMU_H
> +
> +#include <linux/ioport.h>
> +
> +struct rcar_apmu_config {
> + struct resource iomem;
> + int cpus[4];
> +};
> +
> +extern void shmobile_smp_apmu_prepare_cpus(unsigned int max_cpus,
> + struct rcar_apmu_config *apmu_config,
> + int num);
> +extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
> + struct task_struct *idle);
> +extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
> +extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
> +
> +#endif /* PLATSMP_APMU_H */
> diff --git a/arch/arm/mach-shmobile/smp-r8a7790.c b/arch/arm/mach-shmobile/smp-r8a7790.c
> index 2311694..9c3da13 100644
> --- a/arch/arm/mach-shmobile/smp-r8a7790.c
> +++ b/arch/arm/mach-shmobile/smp-r8a7790.c
> @@ -21,6 +21,7 @@
> #include <asm/smp_plat.h>
>
> #include "common.h"
> +#include "platsmp-apmu.h"
> #include "pm-rcar.h"
> #include "r8a7790.h"
>
> @@ -34,10 +35,23 @@ static struct rcar_sysc_ch r8a7790_ca7_scu = {
> .isr_bit = 21, /* CA7-SCU */
> };
>
> +static struct rcar_apmu_config r8a7790_apmu_config[] = {
> + {
> + .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
> + .cpus = { 0, 1, 2, 3 },
> + },
> + {
> + .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
> + .cpus = { 0x100, 0x0101, 0x102, 0x103 },
> + }
> +};
> +
> static void __init r8a7790_smp_prepare_cpus(unsigned int max_cpus)
> {
> /* let APMU code install data related to shmobile_boot_vector */
> - shmobile_smp_apmu_prepare_cpus(max_cpus);
> + shmobile_smp_apmu_prepare_cpus(max_cpus,
> + r8a7790_apmu_config,
> + ARRAY_SIZE(r8a7790_apmu_config));
>
> /* turn on power to SCU */
> r8a7790_pm_init();
> diff --git a/arch/arm/mach-shmobile/smp-r8a7791.c b/arch/arm/mach-shmobile/smp-r8a7791.c
> index f743386..96e392c 100644
> --- a/arch/arm/mach-shmobile/smp-r8a7791.c
> +++ b/arch/arm/mach-shmobile/smp-r8a7791.c
> @@ -21,13 +21,27 @@
> #include <asm/smp_plat.h>
>
> #include "common.h"
> +#include "platsmp-apmu.h"
> #include "r8a7791.h"
> #include "rcar-gen2.h"
>
> +static struct rcar_apmu_config r8a7791_apmu_config[] = {
> + {
> + .iomem = DEFINE_RES_MEM(0xe6152000, 0x88),
> + .cpus = { 0, 1, 2, 3 },
> + },
> + {
> + .iomem = DEFINE_RES_MEM(0xe6151000, 0x88),
> + .cpus = { 0x100, 0x0101, 0x102, 0x103 },
> + }
> +};
> +
> static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
> {
> /* let APMU code install data related to shmobile_boot_vector */
> - shmobile_smp_apmu_prepare_cpus(max_cpus);
> + shmobile_smp_apmu_prepare_cpus(max_cpus,
> + r8a7791_apmu_config,
> + ARRAY_SIZE(r8a7791_apmu_config));
>
> r8a7791_pm_init();
> }
> --
> 1.8.4.5
>
> --
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>
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part
2014-08-04 16:21 [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part Ulrich Hecht
2014-08-05 1:15 ` Simon Horman
@ 2014-08-05 5:39 ` Magnus Damm
2014-08-05 6:54 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Magnus Damm @ 2014-08-05 5:39 UTC (permalink / raw)
To: linux-sh
On Tue, Aug 5, 2014 at 10:15 AM, Simon Horman <horms@verge.net.au> wrote:
> On Mon, Aug 04, 2014 at 06:21:16PM +0200, Ulrich Hecht wrote:
>> From: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
>>
>> Since APMU resource data were not common data of the R-Car series,
>> it was separated.
>>
>> Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
>> [uli: moved header file out of arch/arm/mach-shmobile/include/mach]
>> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
>> ---
>>
>> This is needed for r8a7794 which has a set of CPU cores different from the
>> other Gen2s.
>
> So unfortunate but given the facts this approach seems reasonable to me.
> Magnus (CCed), do you have an opinion on this?
This information shall really be described via DT in my option.
Perhaps this patch could be one step in the right direction though.
Unfortunately the patch seems to contain incorrect information though,
the r8a7791 SoC only contains two CPU cores so now when we separate
the code perhaps we should do it right?
My suggestion is to add R-Car E2 support as UP-only first, then we can
add SMP bits incrementally over time.
Cheers,
/ magnus
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part
2014-08-04 16:21 [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part Ulrich Hecht
2014-08-05 1:15 ` Simon Horman
2014-08-05 5:39 ` Magnus Damm
@ 2014-08-05 6:54 ` Simon Horman
2 siblings, 0 replies; 4+ messages in thread
From: Simon Horman @ 2014-08-05 6:54 UTC (permalink / raw)
To: linux-sh
On Tue, Aug 05, 2014 at 02:39:15PM +0900, Magnus Damm wrote:
> On Tue, Aug 5, 2014 at 10:15 AM, Simon Horman <horms@verge.net.au> wrote:
> > On Mon, Aug 04, 2014 at 06:21:16PM +0200, Ulrich Hecht wrote:
> >> From: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
> >>
> >> Since APMU resource data were not common data of the R-Car series,
> >> it was separated.
> >>
> >> Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
> >> [uli: moved header file out of arch/arm/mach-shmobile/include/mach]
> >> Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
> >> ---
> >>
> >> This is needed for r8a7794 which has a set of CPU cores different from the
> >> other Gen2s.
> >
> > So unfortunate but given the facts this approach seems reasonable to me.
> > Magnus (CCed), do you have an opinion on this?
>
> This information shall really be described via DT in my option.
> Perhaps this patch could be one step in the right direction though.
> Unfortunately the patch seems to contain incorrect information though,
> the r8a7791 SoC only contains two CPU cores so now when we separate
> the code perhaps we should do it right?
>
> My suggestion is to add R-Car E2 support as UP-only first, then we can
> add SMP bits incrementally over time.
It seems to me that this would be a good candidate to skip
straight to supporting using DT rather with the option
of switching back to adding legacy-C code if a pressing need arises.
As Magnus suggests it may be easiest to achieve by focusing on
UP-only support to begin with.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2014-08-04 16:21 [PATCH] ARM: shmobile: Separate APMU resource data into CPU dependant part Ulrich Hecht
2014-08-05 1:15 ` Simon Horman
2014-08-05 5:39 ` Magnus Damm
2014-08-05 6:54 ` Simon Horman
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