diff mbox

[v5,2/9] clocksource: arm_arch_timer: Extend arch_timer_kvm_info to get the virtual IRQ

Message ID 1459769860-6629-3-git-send-email-julien.grall@arm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Julien Grall April 4, 2016, 11:37 a.m. UTC
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 v4:
        - Move the initialization of the virtual_irq into
        arch_timer_init as KVM mandates the system registers timer.

    Changes in v3:
        - Move the KVM changes into a separate patch and rename the patch
        - Move the initialization of the virtual_irq into
        arch_timer_common_init
---
 drivers/clocksource/arm_arch_timer.c | 2 ++
 include/clocksource/arm_arch_timer.h | 1 +
 2 files changed, 3 insertions(+)

Comments

Christoffer Dall April 6, 2016, 5:26 p.m. UTC | #1
On Mon, Apr 04, 2016 at 12:37:33PM +0100, 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>
> 
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
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diff mbox

Patch

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 62bdfe7..bb58224 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -750,6 +750,8 @@  static void __init arch_timer_init(void)
 
 	arch_timer_register();
 	arch_timer_common_init();
+
+	arch_timer_kvm_info.virtual_irq = arch_timer_ppi[VIRT_PPI];
 }
 
 static void __init arch_timer_of_init(struct device_node *np)
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