From mboxrd@z Thu Jan 1 00:00:00 1970 From: u.kleine-koenig@pengutronix.de (Uwe =?iso-8859-1?Q?Kleine-K=F6nig?=) Date: Fri, 20 Feb 2015 20:47:56 +0100 Subject: [PATCH v2 02/18] ARM: ARMv7M: Enlarge vector table to 256 entries In-Reply-To: <1424455277-29983-3-git-send-email-mcoquelin.stm32@gmail.com> References: <1424455277-29983-1-git-send-email-mcoquelin.stm32@gmail.com> <1424455277-29983-3-git-send-email-mcoquelin.stm32@gmail.com> Message-ID: <20150220194756.GS19388@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Feb 20, 2015 at 07:01:01PM +0100, Maxime Coquelin wrote: > From Cortex-M reference manuals, the nvic supports up to 240 interrupts. > So the number of entries in vectors table is up to 256. > > This patch adds a new config flag to specify the number of external interrupts. > Some ifdeferies are added in order to respect the natural alignment without > wasting too much space on smaller systems. > > Signed-off-by: Maxime Coquelin > --- > arch/arm/kernel/entry-v7m.S | 13 +++++++++---- > arch/arm/mm/Kconfig | 15 +++++++++++++++ > 2 files changed, 24 insertions(+), 4 deletions(-) > > diff --git a/arch/arm/kernel/entry-v7m.S b/arch/arm/kernel/entry-v7m.S > index 8944f49..68cde36 100644 > --- a/arch/arm/kernel/entry-v7m.S > +++ b/arch/arm/kernel/entry-v7m.S > @@ -117,9 +117,14 @@ ENTRY(__switch_to) > ENDPROC(__switch_to) > > .data > - .align 8 > +#if CONFIG_CPUV7M_NUM_IRQ <= 112 I would have called this CONFIG_CPU_V7M_NUM_IRQ to match the already existing CPU_V7M symbol. > + .align 9 > +#else > + .align 10 > +#endif > + Other than that: Acked-by: Uwe Kleine-K?nig Who do you target to apply this series? Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-K?nig | Industrial Linux Solutions | http://www.pengutronix.de/ |