From: paulmck@linux.vnet.ibm.com (Paul E. McKenney)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v10 03/19] arm: fiq: Replace default FIQ handler
Date: Tue, 2 Sep 2014 07:23:14 -0700 [thread overview]
Message-ID: <20140902142314.GX5001@linux.vnet.ibm.com> (raw)
In-Reply-To: <5405AEBC.9020904@linaro.org>
On Tue, Sep 02, 2014 at 12:49:16PM +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.
> >
> > 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.
> >
> > 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 (elsewhere in the thread) 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).
There was a later clarification from a lockdep expert showing that the
code was in fact safe, so the notifier approach should be just fine.
Thanx, Paul
> Therefore I have made the changes requested and produced a
> before/after patch to show the impact of this. I will merge this
> into the FIQ patchset shortly (I need to run a few more build tests
> first).
>
> 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 +219,23 @@ 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).
> + */
> +#ifdef CONFIG_KGDB_FIQ
> + kgdb_handle_fiq(regs);
> +#endif
> +#ifdef CONFIG_ARM_GIC
> + gic_handle_fiq_ipi();
> +#endif
> +
> 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 14:23 UTC|newest]
Thread overview: 262+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-14 15:58 [RFC 0/8] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-05-14 15:58 ` [RFC 1/8] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-05-14 15:58 ` [RFC 2/8] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-05-14 15:58 ` [RFC 3/8] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-05-14 15:58 ` [RFC 4/8] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-05-14 15:58 ` [RFC 5/8] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-05-14 15:58 ` [RFC 6/8] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-05-14 15:58 ` [RFC 7/8] ARM: VIC: Add vic_set_fiq function to select if an interrupt should generate an IRQ or FIQ Daniel Thompson
2014-05-14 15:58 ` [RFC 8/8] arm: fiq: Hack FIQ routing backdoors into GIC and VIC Daniel Thompson
2014-05-23 13:57 ` [RFC v2 00/10] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-05-23 13:57 ` [RFC v2 01/10] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-05-23 14:59 ` Srinivas Kandagatla
2014-05-23 15:00 ` Russell King - ARM Linux
2014-05-28 15:47 ` Daniel Thompson
2014-05-23 13:57 ` [RFC v2 02/10] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-05-23 13:57 ` [RFC v2 03/10] irqchip: gic: Introduce shadow irqs for FIQ Daniel Thompson
2014-05-23 13:57 ` [RFC v2 04/10] ARM: vexpress: Extend UART with FIQ support Daniel Thompson
2014-05-23 15:04 ` Russell King - ARM Linux
2014-05-29 10:31 ` Daniel Thompson
2014-05-29 13:44 ` Rob Herring
2014-06-03 12:41 ` Daniel Thompson
2014-05-23 13:57 ` [RFC v2 05/10] ARM: STi: STiH41x: " Daniel Thompson
2014-05-23 13:57 ` [RFC v2 06/10] irqchip: vic: Introduce shadow irqs for FIQ Daniel Thompson
2014-05-23 13:57 ` [RFC v2 07/10] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-05-23 13:57 ` [RFC v2 08/10] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-05-23 13:57 ` [RFC v2 09/10] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-05-23 13:57 ` [RFC v2 10/10] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-05-23 14:50 ` Srinivas Kandagatla
2014-06-05 9:53 ` [RFC v3 0/9] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-06-05 9:53 ` [RFC v3 1/9] arm: fiq: arbitrary mappings from IRQ to FIQ virqs Daniel Thompson
2014-06-05 11:51 ` Russell King - ARM Linux
2014-06-05 13:08 ` Daniel Thompson
2014-06-12 8:37 ` Linus Walleij
2014-06-12 9:54 ` Daniel Thompson
2014-06-13 14:29 ` Rob Herring
2014-06-18 11:24 ` Daniel Thompson
2014-06-05 9:53 ` [RFC v3 2/9] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-05 9:53 ` [RFC v3 3/9] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-06-05 19:50 ` Nicolas Pitre
2014-06-05 9:53 ` [RFC v3 4/9] irqchip: gic: Introduce shadow irqs for FIQ Daniel Thompson
2014-06-06 7:46 ` Peter De Schrijver
2014-06-06 9:23 ` Daniel Thompson
2014-06-05 9:53 ` [RFC v3 5/9] irqchip: vic: " Daniel Thompson
2014-06-05 9:53 ` [RFC v3 6/9] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-05 9:53 ` [RFC v3 7/9] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-05 9:53 ` [RFC v3 8/9] serial: amba-pl011: Pass on FIQ information to KGDB Daniel Thompson
2014-06-05 9:53 ` [RFC v3 9/9] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 00/13] kgdb: NMI/FIQ support for ARM Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 01/13] arm: fiq: Add callbacks to manage FIQ routings Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 02/13] arm: fiq: Allow EOI to be communicated to the intc Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 03/13] irqchip: gic: Provide support for interrupt grouping Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 04/13] irqchip: gic: Add support for FIQ management Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 05/13] irqchip: gic: Remove spin locks from eoi_irq Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 06/13] irqchip: vic: Add support for FIQ management Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 07/13] ARM: Move some macros from entry-armv to entry-header Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 08/13] ARM: Add KGDB/KDB FIQ debugger generic code Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 09/13] serial: amba-pl011: Pass FIQ information to KGDB Daniel Thompson
2014-06-20 0:36 ` Greg Kroah-Hartman
2014-06-19 10:38 ` [PATCH v4 10/13] serial: asc: Add support for KGDB's FIQ/NMI mode Daniel Thompson
2014-06-20 0:36 ` Greg Kroah-Hartman
2014-06-19 10:38 ` [PATCH v4 11/13] serial: asc: Adopt readl_/writel_relaxed() Daniel Thompson
2014-06-19 11:29 ` Srinivas Kandagatla
2014-06-19 11:46 ` Daniel Thompson
2014-06-19 11:58 ` Maxime Coquelin
2014-06-19 12:01 ` Srinivas Kandagatla
2014-06-19 13:12 ` Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 12/13] serial: imx: clean up imx_poll_get_char() Daniel Thompson
2014-06-19 10:38 ` [PATCH v4 13/13] serial: imx: Add support for KGDB's FIQ/NMI mode Daniel Thompson
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
2014-09-02 11:36 ` Russell King - ARM Linux
2014-09-02 11:49 ` Daniel Thompson
2014-09-02 14:23 ` Paul E. McKenney [this message]
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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