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From: Andrew Jones <drjones@redhat.com>
To: Eric Auger <eric.auger@redhat.com>
Cc: eric.auger.pro@gmail.com, maz@kernel.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	qemu-devel@nongnu.org, qemu-arm@nongnu.org,
	andre.przywara@arm.com, peter.maydell@linaro.org,
	yuzenghui@huawei.com, alexandru.elisei@arm.com, thuth@redhat.com
Subject: Re: [kvm-unit-tests PATCH v2 03/16] arm/arm64: gic: Introduce setup_irq() helper
Date: Mon, 13 Jan 2020 17:53:44 +0100
Message-ID: <20200113165344.2focia4mhxtixutg@kamzik.brq.redhat.com> (raw)
In-Reply-To: <20200110145412.14937-4-eric.auger@redhat.com>

On Fri, Jan 10, 2020 at 03:53:59PM +0100, Eric Auger wrote:
> ipi_enable() code would be reusable for other interrupts
> than IPI. Let's rename it setup_irq() and pass an interrupt
> handler pointer. We also export it to use it in other tests
> such as the PMU's one.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> ---
>  arm/gic.c         | 24 +++---------------------
>  lib/arm/asm/gic.h |  3 +++
>  lib/arm/gic.c     | 11 +++++++++++
>  3 files changed, 17 insertions(+), 21 deletions(-)
> 
> diff --git a/arm/gic.c b/arm/gic.c
> index fcf4c1f..ba43ae5 100644
> --- a/arm/gic.c
> +++ b/arm/gic.c
> @@ -215,20 +215,9 @@ static void ipi_test_smp(void)
>  	report_prefix_pop();
>  }
>  
> -static void ipi_enable(void)
> -{
> -	gic_enable_defaults();
> -#ifdef __arm__
> -	install_exception_handler(EXCPTN_IRQ, ipi_handler);
> -#else
> -	install_irq_handler(EL1H_IRQ, ipi_handler);
> -#endif
> -	local_irq_enable();
> -}
> -
>  static void ipi_send(void)
>  {
> -	ipi_enable();
> +	setup_irq(ipi_handler);
>  	wait_on_ready();
>  	ipi_test_self();
>  	ipi_test_smp();
> @@ -238,7 +227,7 @@ static void ipi_send(void)
>  
>  static void ipi_recv(void)
>  {
> -	ipi_enable();
> +	setup_irq(ipi_handler);
>  	cpumask_set_cpu(smp_processor_id(), &ready);
>  	while (1)
>  		wfi();
> @@ -295,14 +284,7 @@ static void ipi_clear_active_handler(struct pt_regs *regs __unused)
>  static void run_active_clear_test(void)
>  {
>  	report_prefix_push("active");
> -	gic_enable_defaults();
> -#ifdef __arm__
> -	install_exception_handler(EXCPTN_IRQ, ipi_clear_active_handler);
> -#else
> -	install_irq_handler(EL1H_IRQ, ipi_clear_active_handler);
> -#endif
> -	local_irq_enable();
> -
> +	setup_irq(ipi_clear_active_handler);
>  	ipi_test_self();
>  	report_prefix_pop();
>  }
> diff --git a/lib/arm/asm/gic.h b/lib/arm/asm/gic.h
> index 21cdb58..55dd84b 100644
> --- a/lib/arm/asm/gic.h
> +++ b/lib/arm/asm/gic.h
> @@ -82,5 +82,8 @@ void gic_set_irq_target(int irq, int cpu);
>  void gic_set_irq_group(int irq, int group);
>  int gic_get_irq_group(int irq);
>  
> +typedef void (*handler_t)(struct pt_regs *regs __unused);
> +extern void setup_irq(handler_t handler);
> +
>  #endif /* !__ASSEMBLY__ */
>  #endif /* _ASMARM_GIC_H_ */
> diff --git a/lib/arm/gic.c b/lib/arm/gic.c
> index aa9cb86..8416dde 100644
> --- a/lib/arm/gic.c
> +++ b/lib/arm/gic.c
> @@ -236,3 +236,14 @@ int gic_get_irq_group(int irq)
>  {
>  	return gic_masked_irq_bits(irq, GICD_IGROUPR, 1, 0, ACCESS_READ);
>  }
> +
> +void setup_irq(handler_t handler)
> +{
> +	gic_enable_defaults();
> +#ifdef __arm__
> +	install_exception_handler(EXCPTN_IRQ, handler);
> +#else
> +	install_irq_handler(EL1H_IRQ, handler);
> +#endif
> +	local_irq_enable();
> +}
> -- 
> 2.20.1
>

I'd rather not add this function to the common code, at least not without
calling it something with 'defaults' in the name. Also I'd prefer unit
tests to call local_irq_enable()/disable() themselves. I think it's fine
to implement this in arm/gic.c and duplicate it in arm/pmu.c, if needed.

Thanks,
drew


  reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-10 14:53 [kvm-unit-tests PATCH v2 00/16] arm/arm64: Add ITS tests Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 01/16] libcflat: Add other size defines Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 02/16] arm: gic: Provide per-IRQ helper functions Eric Auger
2020-01-10 14:53 ` [kvm-unit-tests PATCH v2 03/16] arm/arm64: gic: Introduce setup_irq() helper Eric Auger
2020-01-13 16:53   ` Andrew Jones [this message]
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 04/16] arm/arm64: gicv3: Add some re-distributor defines Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 05/16] arm/arm64: ITS: Introspection tests Eric Auger
2020-01-13 17:11   ` Andrew Jones
2020-01-13 17:33   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 06/16] arm/arm64: ITS: Test BASER Eric Auger
2020-01-13 17:21   ` Andrew Jones
2020-01-15 17:16     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 07/16] arm/arm64: ITS: Set the LPI config and pending tables Eric Auger
2020-01-13 17:31   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 08/16] arm/arm64: ITS: Init the command queue Eric Auger
2020-01-13 17:37   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 09/16] arm/arm64: ITS: Enable/Disable LPIs at re-distributor level Eric Auger
2020-01-13 17:44   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 10/16] arm/arm64: ITS: its_enable_defaults Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 11/16] arm/arm64: ITS: Device and collection Initialization Eric Auger
2020-01-13 17:48   ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 12/16] arm/arm64: ITS: commands Eric Auger
2020-01-13 18:00   ` Andrew Jones
2020-01-15 17:13     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 13/16] arm/arm64: ITS: INT functional tests Eric Auger
2020-01-13 18:17   ` Andrew Jones
2020-01-15 17:11     ` Auger Eric
2020-01-16  8:06       ` Andrew Jones
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 14/16] arm/run: Allow Migration tests Eric Auger
2020-01-13 18:40   ` Andrew Jones
2020-01-15 17:04     ` Auger Eric
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 15/16] arm/arm64: ITS: migration tests Eric Auger
2020-01-10 14:54 ` [kvm-unit-tests PATCH v2 16/16] arm/arm64: ITS: pending table migration test Eric Auger
2020-01-13 18:45   ` Andrew Jones
2020-01-15 17:06     ` Auger Eric

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