From: Daniel Thompson <daniel.thompson@linaro.org>
To: paulmck@linux.vnet.ibm.com
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
kgdb-bugreport@lists.sourceforge.net, patches@linaro.org,
linaro-kernel@lists.linaro.org,
John Stultz <john.stultz@linaro.org>,
Anton Vorontsov <anton.vorontsov@linaro.org>,
Colin Cross <ccross@android.com>,
kernel-team@android.com, Rob Herring <robherring2@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Ben Dooks <ben.dooks@codethink.co.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Martin <Dave.Martin@arm.com>,
Fabio Estevam <festevam@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Nicolas Pitre <nico@linaro.org>
Subject: Re: [PATCH v10 03/19] arm: fiq: Replace default FIQ handler
Date: Tue, 02 Sep 2014 12:03:11 +0100 [thread overview]
Message-ID: <5405A3EF.60908@linaro.org> (raw)
In-Reply-To: <20140828161551.GC5001@linux.vnet.ibm.com>
On 28/08/14 17:15, Paul E. McKenney wrote:
> On Thu, Aug 28, 2014 at 04:54:25PM +0100, Daniel Thompson wrote:
>> On 28/08/14 16:01, Russell King - ARM Linux wrote:
>>> On Tue, Aug 19, 2014 at 07:12:07PM +0100, Daniel Thompson wrote:
>>>> On 19/08/14 18:37, Russell King - ARM Linux wrote:
>>>>> On Tue, Aug 19, 2014 at 05:45:53PM +0100, Daniel Thompson wrote:
>>>>>> +int register_fiq_nmi_notifier(struct notifier_block *nb)
>>>>>> +{
>>>>>> + return atomic_notifier_chain_register(&fiq_nmi_chain, nb);
>>>>>> +}
>>>>>> +
>>>>>> +asmlinkage void __exception_irq_entry fiq_nmi_handler(struct pt_regs *regs)
>>>>>> +{
>>>>>> + struct pt_regs *old_regs = set_irq_regs(regs);
>>>>>> +
>>>>>> + nmi_enter();
>>>>>> + atomic_notifier_call_chain(&fiq_nmi_chain, (unsigned long)regs, NULL);
>>>>>> + nmi_exit();
>>>>>> + set_irq_regs(old_regs);
>>>>>> +}
>>>>>
>>>>> Really not happy with this. What happens if a FIQ occurs while we're
>>>>> inside register_fiq_nmi_notifier() - more specifically inside
>>>>> atomic_notifier_chain_register() ?
>>>>
>>>> Should depend on which side of the rcu update we're on.
>>>
>>> I just asked Paul McKenney, our RCU expert... essentially, yes, RCU
>>> stuff itself is safe in this context. However, RCU stuff can call into
>>> lockdep if lockdep is configured, and there are questions over lockdep.
>>
>> Thanks for following this up.
>>
>> I originally formed the opinion RCU was safe from FIQ because it is also
>> used to manage the NMI notification handlers for x86
>> (register_nmi_handler) and I understood the runtime constraints on FIQ
>> to be very similar.
>>
>> Note that x86 manages the notifiers itself so it uses
>> list_for_each_entry_rcu() rather atomic_notifier_call_chain() but
>> nevertheless I think this boils down to the same thing w.r.t. safety
>> concerns.
>>
>>
>>> There's some things which can be done to reduce the lockdep exposure
>>> to it, such as ensuring that rcu_read_lock() is first called outside
>>> of FIQ context.
>>
>> lockdep is automatically disabled by calling nmi_enter() so all the
>> lockdep calls should end up following the early exit path based on
>> current->lockdep_recursion.
>
> Ah, that was what I was missing. Then the notification should be
> safe from NMI, so have at it! ;-)
>
> Thanx, Paul
>
>>> There's concerns with whether either printk() in check_flags() could
>>> be reached too (flags there should always indicate that IRQs were
>>> disabled, so that reduces down to a question about just the first
>>> printk() there.)
>>>
>>> There's also the very_verbose() stuff for RCU lockdep classes which
>>> Paul says must not be enabled.
>>>
>>> Lastly, Paul isn't a lockdep expert, but he sees nothing that prevents
>>> lockdep doing the deadlock checking as a result of the above call.
>>>
>>> So... this coupled with my feeling that notifiers make it too easy for
>>> unreviewed code to be hooked into this path, I'm fairly sure that we
>>> don't want to be calling atomic notifier chains from FIQ context.
Having esablished (above) that RCU usage is safe from FIQ I have been
working on the assumption that your feeling regarding unreviewed code
is sufficient on its own to avoid using notifiers (and also to avoid
a list of function pointers like on x86).
Therefore I have made these changes I've produced a before/after patch
to show the impact of this. I will merge this into the FIQ patchset
shortly.
Personally I still favour using notifiers and think the coupling below is
excessive. Nevertheless I've run a couple of basic tests on the code
below and it works fine.
diff --git a/arch/arm/include/asm/fiq.h b/arch/arm/include/asm/fiq.h
index 175bfed..a25c952 100644
--- a/arch/arm/include/asm/fiq.h
+++ b/arch/arm/include/asm/fiq.h
@@ -54,7 +54,6 @@ extern void disable_fiq(int fiq);
extern int ack_fiq(int fiq);
extern void eoi_fiq(int fiq);
extern bool has_fiq(int fiq);
-extern int register_fiq_nmi_notifier(struct notifier_block *nb);
extern void fiq_register_mapping(int irq, struct fiq_chip *chip);
/* helpers defined in fiqasm.S: */
diff --git a/arch/arm/include/asm/kgdb.h b/arch/arm/include/asm/kgdb.h
index 6563da0..cb5ccd6 100644
--- a/arch/arm/include/asm/kgdb.h
+++ b/arch/arm/include/asm/kgdb.h
@@ -51,6 +51,7 @@ extern void kgdb_handle_bus_error(void);
extern int kgdb_fault_expected;
extern int kgdb_register_fiq(unsigned int fiq);
+extern void kgdb_handle_fiq(struct pt_regs *regs);
#endif /* !__ASSEMBLY__ */
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
index b2bd1c7..7422b58 100644
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -43,12 +43,14 @@
#include <linux/irq.h>
#include <linux/radix-tree.h>
#include <linux/slab.h>
+#include <linux/irqchip/arm-gic.h>
#include <asm/cacheflush.h>
#include <asm/cp15.h>
#include <asm/exception.h>
#include <asm/fiq.h>
#include <asm/irq.h>
+#include <asm/kgdb.h>
#include <asm/traps.h>
#define FIQ_OFFSET ({ \
@@ -65,7 +67,6 @@ static unsigned long no_fiq_insn;
static int fiq_start = -1;
static RADIX_TREE(fiq_data_tree, GFP_KERNEL);
static DEFINE_MUTEX(fiq_data_mutex);
-static ATOMIC_NOTIFIER_HEAD(fiq_nmi_chain);
/* Default reacquire function
* - we always relinquish FIQ control
@@ -218,17 +219,19 @@ bool has_fiq(int fiq)
}
EXPORT_SYMBOL(has_fiq);
-int register_fiq_nmi_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_register(&fiq_nmi_chain, nb);
-}
-
asmlinkage void __exception_irq_entry fiq_nmi_handler(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
nmi_enter();
- atomic_notifier_call_chain(&fiq_nmi_chain, (unsigned long)regs, NULL);
+
+ /* these callbacks deliberately avoid using a notifier chain in
+ * order to ensure code review happens (drivers cannot "secretly"
+ * employ FIQ without modifying this chain of calls).
+ */
+ kgdb_handle_fiq(regs);
+ gic_handle_fiq_ipi();
+
nmi_exit();
set_irq_regs(old_regs);
}
diff --git a/arch/arm/kernel/kgdb.c b/arch/arm/kernel/kgdb.c
index b77b885..630a3ef 100644
--- a/arch/arm/kernel/kgdb.c
+++ b/arch/arm/kernel/kgdb.c
@@ -312,12 +312,13 @@ struct kgdb_arch arch_kgdb_ops = {
};
#ifdef CONFIG_KGDB_FIQ
-static int kgdb_handle_fiq(struct notifier_block *nb, unsigned long arg,
- void *data)
+void kgdb_handle_fiq(struct pt_regs *regs)
{
- struct pt_regs *regs = (void *) arg;
int actual;
+ if (!kgdb_fiq)
+ return;
+
if (!kgdb_nmicallback(raw_smp_processor_id(), regs))
return NOTIFY_OK;
@@ -333,11 +334,6 @@ static int kgdb_handle_fiq(struct notifier_block *nb, unsigned long arg,
return NOTIFY_OK;
}
-static struct notifier_block kgdb_fiq_notifier = {
- .notifier_call = kgdb_handle_fiq,
- .priority = 100,
-};
-
int kgdb_register_fiq(unsigned int fiq)
{
static struct fiq_handler kgdb_fiq_desc = { .name = "kgdb", };
@@ -357,7 +353,6 @@ int kgdb_register_fiq(unsigned int fiq)
}
kgdb_fiq = fiq;
- register_fiq_nmi_notifier(&kgdb_fiq_notifier);
return 0;
}
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index bda5a91..8821160 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -502,13 +502,17 @@ static void __init gic_init_fiq(struct gic_chip_data *gic,
/*
* Fully acknowledge (both ack and eoi) a FIQ-based IPI
*/
-static int gic_handle_fiq_ipi(struct notifier_block *nb, unsigned long regs,
- void *data)
+void gic_handle_fiq_ipi(void)
{
struct gic_chip_data *gic = &gic_data[0];
- void __iomem *cpu_base = gic_data_cpu_base(gic);
+ void __iomem *cpu_base;
unsigned long irqstat, irqnr;
+ if (!gic || !gic->fiq_enable)
+ return;
+
+ cpu_base = gic_data_cpu_base(gic);
+
if (WARN_ON(!in_nmi()))
return NOTIFY_BAD;
@@ -525,13 +529,6 @@ static int gic_handle_fiq_ipi(struct notifier_block *nb, unsigned long regs,
return NOTIFY_OK;
}
-
-/*
- * Notifier to ensure IPI FIQ is acknowledged correctly.
- */
-static struct notifier_block gic_fiq_ipi_notifier = {
- .notifier_call = gic_handle_fiq_ipi,
-};
#else /* CONFIG_FIQ */
static inline void gic_set_group_irq(void __iomem *base, unsigned int hwirq,
int group) {}
@@ -1250,10 +1247,6 @@ void __init gic_init_bases(unsigned int gic_nr, int irq_start,
#ifdef CONFIG_SMP
set_smp_cross_call(gic_raise_softirq);
register_cpu_notifier(&gic_cpu_notifier);
-#ifdef CONFIG_FIQ
- if (gic_data_fiq_enable(gic))
- register_fiq_nmi_notifier(&gic_fiq_ipi_notifier);
-#endif
#endif
set_handle_irq(gic_handle_irq);
}
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index 45e2d8c..52a5676 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -101,5 +101,8 @@ static inline void __init register_routable_domain_ops
{
gic_routable_irq_domain_ops = ops;
}
+
+void gic_handle_fiq_ipi(void);
+
#endif /* __ASSEMBLY */
#endif
next prev parent reply other threads:[~2014-09-02 11:03 UTC|newest]
Thread overview: 194+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1403174303-25456-1-git-send-email-daniel.thompson@linaro.org>
2014-06-24 15:18 ` [PATCH v6 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-06-24 15:18 ` [PATCH v6 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-24 15:44 ` Nicolas Pitre
2014-06-24 15:58 ` Daniel Thompson
2014-06-24 15:18 ` [PATCH v6 2/4] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-24 15:46 ` Nicolas Pitre
2014-06-24 15:18 ` [PATCH v6 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-24 15:53 ` Nicolas Pitre
2014-06-24 15:18 ` [PATCH v6 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-24 16:08 ` Russell King - ARM Linux
2014-06-26 9:54 ` Daniel Thompson
2014-06-30 13:54 ` Daniel Thompson
2014-06-24 16:22 ` Nicolas Pitre
2014-06-26 12:48 ` Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 2/4] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-30 8:53 ` [PATCH v7 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 0/4] arm: KGDB NMI/FIQ support Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 1/4] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 2/4] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 3/4] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-07-10 8:03 ` [PATCH v8 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-08-13 21:45 ` Russell King - ARM Linux
2014-08-14 10:48 ` Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 0/3] arm: FIQ IPI support Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 1/3] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 2/3] arm: kgdb: Add support for IPI FIQ roundup Daniel Thompson
2014-08-14 11:15 ` [RFC PATCH 3/3] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-14 12:36 ` [PATCH v8 4/4] ARM: Add KGDB/KDB FIQ debugger generic code Russell King - ARM Linux
2014-08-14 15:02 ` Daniel Thompson
2014-07-14 13:51 ` [PATCH v8 0/4] arm: KGDB NMI/FIQ support Harro Haan
2014-07-15 9:41 ` Daniel Thompson
2014-07-15 13:04 ` Harro Haan
2014-07-15 14:52 ` Daniel Thompson
2014-07-15 15:59 ` Harro Haan
2014-07-15 17:08 ` Daniel Thompson
2014-07-16 17:15 ` Harro Haan
2014-07-17 9:01 ` Daniel Thompson
2014-07-15 18:45 ` Marek Vasut
2014-07-16 12:54 ` Daniel Thompson
2014-07-16 17:21 ` Harro Haan
2014-07-17 9:20 ` Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 00/16] " Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 01/16] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 02/16] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 03/16] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 04/16] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-18 13:40 ` [PATCH v9 05/16] arm: KGDB/KDB FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 00/19] arm: KGDB NMI/FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 01/19] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 02/19] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 03/19] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-08-19 17:37 ` Russell King - ARM Linux
2014-08-19 18:12 ` Daniel Thompson
2014-08-28 15:01 ` Russell King - ARM Linux
2014-08-28 15:43 ` Paul E. McKenney
2014-08-28 15:54 ` Daniel Thompson
2014-08-28 16:15 ` Paul E. McKenney
2014-09-02 11:03 ` Daniel Thompson [this message]
2014-09-02 11:36 ` Russell King - ARM Linux
2014-09-02 11:49 ` Daniel Thompson
2014-09-02 14:23 ` Paul E. McKenney
2014-09-02 16:42 ` Russell King - ARM Linux
2014-09-03 10:21 ` Daniel Thompson
2014-09-03 19:34 ` Russell King - ARM Linux
2014-09-04 9:09 ` Daniel Thompson
2014-09-04 9:45 ` Russell King - ARM Linux
2014-09-04 10:04 ` Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 04/19] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 05/19] arm: KGDB/KDB FIQ support Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 06/19] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 07/19] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 08/19] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-08-19 16:45 ` [PATCH v10 09/19] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 10/19] irqchip: gic: Group 0 workaround Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 11/19] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 12/19] serial: kgdb_nmi: No CON_ENABLED by default Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 13/19] serial: amba-pl011: Use container_of() to get uart_amba_port Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 14/19] serial: amba-pl011: Move pl011_hwinit() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 15/19] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 16/19] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 17/19] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 18/19] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-08-19 16:46 ` [PATCH v10 19/19] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 00/19] arm: KGDB NMI/FIQ support Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 01/19] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-09-02 18:51 ` Russell King - ARM Linux
2014-09-03 0:03 ` Thomas Gleixner
2014-09-03 8:27 ` Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 02/19] arm: fiq: Allow ACK and EOI to be passed to the intc Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 03/19] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 04/19] arm: smp: Introduce a special IPI signalled using FIQ Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 05/19] arm: KGDB/KDB FIQ support Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 06/19] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-09-02 19:33 ` Russell King - ARM Linux
2014-09-02 21:36 ` Catalin Marinas
2014-09-03 9:44 ` Daniel Thompson
2014-09-03 9:28 ` Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 07/19] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-09-02 19:36 ` Russell King - ARM Linux
2014-09-02 13:00 ` [PATCH v11 08/19] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 09/19] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 10/19] irqchip: gic: Group 0 workaround Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 11/19] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-09-02 19:40 ` Russell King - ARM Linux
2014-09-02 13:00 ` [PATCH v11 12/19] serial: kgdb_nmi: No CON_ENABLED by default Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 13/19] serial: amba-pl011: Use container_of() to get uart_amba_port Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 14/19] serial: amba-pl011: Move pl011_hwinit() Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 15/19] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 16/19] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 17/19] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-09-02 13:42 ` [STLinux Kernel] " Peter Griffin
2014-09-02 13:55 ` Maxime Coquelin
2014-09-02 13:00 ` [PATCH v11 18/19] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-09-02 13:00 ` [PATCH v11 19/19] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-09-02 23:02 ` [PATCH v11 00/19] arm: KGDB NMI/FIQ support Thomas Gleixner
2014-09-03 9:02 ` Daniel Thompson
2014-09-03 10:06 ` Thomas Gleixner
2014-09-03 10:30 ` Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 0/6] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 1/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-04 18:57 ` Nicolas Pitre
2014-09-05 9:03 ` Daniel Thompson
2014-09-05 18:04 ` Nicolas Pitre
2014-09-08 13:22 ` Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 2/6] arm: smp: Introduce a non-maskable IPI Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 5/6] irqchip: gic: Group 0 workaround Daniel Thompson
2014-09-04 16:03 ` [PATCH v1 6/6] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 0/5] " Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 1/5] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 2/5] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 3/5] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 4/5] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-05 16:50 ` Catalin Marinas
2014-09-08 11:03 ` Daniel Thompson
2014-09-05 15:33 ` [PATCH v2 5/5] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 0/5] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 1/5] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 2/5] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 3/5] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-08 15:49 ` Nicolas Pitre
2014-09-08 15:57 ` Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 4/5] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-08 15:28 ` [PATCH v3 5/5] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-08 16:23 ` Russell King - ARM Linux
2014-09-09 8:24 ` Daniel Thompson
2014-09-14 11:53 ` Daniel Thompson
2014-09-08 16:24 ` [PATCH v3 0/5] arm: Implement arch_trigger_all_cpu_backtrace Russell King - ARM Linux
2014-09-09 8:26 ` Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 0/6] " Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 1/6] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 2/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 5/6] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-09 14:15 ` [PATCH v4 6/6] arm: smp: Handle ipi_cpu_backtrace() using FIQ (if available) Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 0/6] arm: Implement arch_trigger_all_cpu_backtrace Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 1/6] ARM: remove unused do_unexp_fiq() function Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 2/6] arm: fiq: Replace default FIQ handler Daniel Thompson
2014-09-12 17:03 ` Russell King - ARM Linux
2014-09-12 17:07 ` Russell King - ARM Linux
2014-09-13 12:01 ` Daniel Thompson
2014-09-12 17:08 ` Russell King - ARM Linux
2014-09-12 17:14 ` Russell King - ARM Linux
2014-09-12 17:19 ` Russell King - ARM Linux
2014-09-12 17:23 ` Russell King - ARM Linux
2014-09-14 6:36 ` Daniel Thompson
2014-09-14 8:45 ` Russell King - ARM Linux
2014-09-14 11:27 ` Daniel Thompson
2014-09-13 12:03 ` Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 3/6] arm64: Introduce dummy version of asm/fiq.h Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 4/6] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 5/6] ARM: add basic support for on-demand backtrace of other CPUs Daniel Thompson
2014-09-11 11:31 ` [PATCH 3.17-rc4 v5 6/6] arm: smp: Handle ipi_cpu_backtrace() using FIQ (if available) Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 06/16] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 07/16] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 08/16] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 09/16] irqchip: gic: Add support for IPI FIQ Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 10/16] irqchip: gic: Group 0 workaround Daniel Thompson
2014-08-18 14:12 ` [PATCH v9 11/16] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 12/16] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-08-18 18:30 ` Peter Hurley
2014-08-19 9:08 ` Daniel Thompson
2014-08-19 11:58 ` Peter Hurley
2014-08-19 12:51 ` Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 13/16] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 14/16] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 15/16] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-08-18 14:28 ` [PATCH v9 16/16] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-08-18 17:32 ` Dirk Behme
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