From: Christoffer Dall <christoffer.dall@linaro.org>
To: Julien Grall <julien.grall@arm.com>
Cc: kvmarm@lists.cs.columbia.edu, marc.zyngier@arm.com,
fu.wei@linaro.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, wei@redhat.com,
al.stone@linaro.org, Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v3 2/9] clocksource: arm_arch_timer: Extend arch_timer_kvm_info to get the virtual IRQ
Date: Tue, 8 Mar 2016 19:27:13 -0800 [thread overview]
Message-ID: <20160309032713.GF26583@lvm> (raw)
In-Reply-To: <1457436573-6180-3-git-send-email-julien.grall@arm.com>
On Tue, Mar 08, 2016 at 11:29:26AM +0000, Julien Grall wrote:
> Currently, the firmware table is parsed by the virtual timer code in
> order to retrieve the virtual timer interrupt. However, this is already
> done by the arch timer driver.
>
> To avoid code duplication, extend arch_timer_kvm_info to get the virtual
> IRQ.
>
> Note that the KVM code will be modified in a subsequent patch.
>
> Signed-off-by: Julien Grall <julien.grall@arm.com>
>
> ---
> Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Marc Zyngier <marc.zyngier@arm.com>
>
> Changes in v3:
> - Move the KVM changes in a separate patch and rename the patch
> - Move the initialization of the virtual_irq to
> arch_timer_common_init
> ---
> drivers/clocksource/arm_arch_timer.c | 2 ++
> include/clocksource/arm_arch_timer.h | 1 +
> 2 files changed, 3 insertions(+)
>
> diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
> index b7ab588..d8887f3 100644
> --- a/drivers/clocksource/arm_arch_timer.c
> +++ b/drivers/clocksource/arm_arch_timer.c
> @@ -701,6 +701,8 @@ static void __init arch_timer_common_init(void)
> arch_timer_banner(arch_timers_present);
> arch_counter_register(arch_timers_present);
> arch_timer_arch_init();
> +
> + arch_timer_kvm_info.virtual_irq = arch_timer_ppi[VIRT_PPI];
why is this in common_init and not just in init?
> }
>
> static void __init arch_timer_init(void)
> diff --git a/include/clocksource/arm_arch_timer.h b/include/clocksource/arm_arch_timer.h
> index 9101ed6b..9dd996a 100644
> --- a/include/clocksource/arm_arch_timer.h
> +++ b/include/clocksource/arm_arch_timer.h
> @@ -51,6 +51,7 @@ enum arch_timer_reg {
>
> struct arch_timer_kvm_info {
> struct timecounter timecounter;
> + int virtual_irq;
> };
>
> #ifdef CONFIG_ARM_ARCH_TIMER
> --
> 1.9.1
>
next prev parent reply other threads:[~2016-03-09 3:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-08 11:29 [PATCH v3 0/9] arm64: Add support of KVM with ACPI Julien Grall
2016-03-08 11:29 ` [PATCH v3 1/9] clocksource: arm_arch_timer: Gather KVM specific information in a structure Julien Grall
2016-03-09 3:23 ` Christoffer Dall
2016-03-09 5:35 ` Julien Grall
2016-03-08 11:29 ` [PATCH v3 2/9] clocksource: arm_arch_timer: Extend arch_timer_kvm_info to get the virtual IRQ Julien Grall
2016-03-09 3:27 ` Christoffer Dall [this message]
2016-03-09 5:52 ` Julien Grall
2016-03-08 11:29 ` [PATCH v3 3/9] irqchip/gic-v2: Gather ACPI specific data in a single structure Julien Grall
2016-03-09 5:47 ` Christoffer Dall
2016-03-09 6:18 ` Julien Grall
2016-03-13 18:19 ` Christoffer Dall
2016-03-08 11:29 ` [PATCH v3 4/9] irqchip/gic-v2: Parse and export virtual GIC information Julien Grall
2016-03-09 5:14 ` Christoffer Dall
2016-03-14 12:19 ` Julien Grall
2016-03-08 11:29 ` [PATCH v3 5/9] irqchip/gic-v3: Gather all ACPI specific data in a single structure Julien Grall
2016-03-09 5:39 ` Christoffer Dall
2016-03-15 12:26 ` Julien Grall
2016-03-18 9:42 ` Christoffer Dall
2016-03-08 11:29 ` [PATCH v3 6/9] irqchip/gic-v3: Parse and export virtual GIC information Julien Grall
2016-03-09 5:53 ` Christoffer Dall
2016-03-22 11:27 ` Graeme Gregory
2016-03-22 12:02 ` Julien Grall
2016-03-08 11:29 ` [PATCH v3 7/9] KVM: arm/arm64: arch_timer: Rely on the arch timer to parse the firmware tables Julien Grall
2016-03-09 5:55 ` Christoffer Dall
2016-03-08 11:29 ` [PATCH v3 8/9] KVM: arm/arm64: vgic: Rely on the GIC driver " Julien Grall
2016-03-09 6:02 ` Christoffer Dall
2016-03-08 11:29 ` [PATCH v3 9/9] clocksource: arm_arch_timer: Remove arch_timer_get_timecounter Julien Grall
2016-03-09 6:02 ` Christoffer Dall
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