From: Julien Grall <julien.grall@arm.com>
To: Shannon Zhao <shannon.zhao@linaro.org>,
linux-arm-kernel@lists.infradead.org,
stefano.stabellini@citrix.com, david.vrabel@citrix.com
Cc: devicetree@vger.kernel.org, linux-efi@vger.kernel.org,
catalin.marinas@arm.com, will.deacon@arm.com,
peter.huangpeng@huawei.com, linux-kernel@vger.kernel.org,
zhaoshenglong@huawei.com, xen-devel@lists.xen.org
Subject: Re: [PATCH v7 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI
Date: Tue, 29 Mar 2016 17:35:57 +0100 [thread overview]
Message-ID: <56FAAEED.7060108__29909.2907029719$1459269442$gmane$org@arm.com> (raw)
In-Reply-To: <1458830676-27075-11-git-send-email-shannon.zhao@linaro.org>
Hi Shannon,
On 24/03/16 14:44, Shannon Zhao wrote:
> When booting with ACPI, it could get the event-channel irq through
The kernel will always get the event-channel IRQ through
HVM_PARAM_CALLBACK_IRQ.
So I would say: ", the kernel will get the event-channel..."
> HVM_PARAM_CALLBACK_IRQ.
>
> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> ---
> arch/arm/xen/enlighten.c | 36 +++++++++++++++++++++++++++++++++++-
> 1 file changed, 35 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
> index d94f726..680aae0 100644
> --- a/arch/arm/xen/enlighten.c
> +++ b/arch/arm/xen/enlighten.c
> @@ -30,6 +30,7 @@
> #include <linux/time64.h>
> #include <linux/timekeeping.h>
> #include <linux/timekeeper_internal.h>
> +#include <linux/acpi.h>
>
> #include <linux/mm.h>
>
> @@ -278,6 +279,35 @@ void __init xen_early_init(void)
> add_preferred_console("hvc", 0, NULL);
> }
>
> +static void __init xen_acpi_guest_init(void)
> +{
> +#ifdef CONFIG_ACPI
> + struct xen_hvm_param a;
> + int interrupt, trigger, polarity;
> +
> + a.domid = DOMID_SELF;
> + a.index = HVM_PARAM_CALLBACK_IRQ;
> + xen_events_irq = 0;
> +
> + if (!HYPERVISOR_hvm_op(HVMOP_get_param, &a)) {
> + if ((a.value >> 56) == HVM_PARAM_CALLBACK_TYPE_PPI) {
> + interrupt = a.value & 0xff;
> + trigger = ((a.value >> 8) & 0x1) ? ACPI_EDGE_SENSITIVE
> + : ACPI_LEVEL_SENSITIVE;
> + polarity = ((a.value >> 8) & 0x2) ? ACPI_ACTIVE_LOW
> + : ACPI_ACTIVE_HIGH;
> + xen_events_irq = acpi_register_gsi(NULL, interrupt,
> + trigger, polarity);
> + }
> + }
Can you invert the condition to remove one layer of indentation?
Regards,
--
Julien Grall
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Xen-devel mailing list
Xen-devel@lists.xen.org
http://lists.xen.org/xen-devel
next prev parent reply other threads:[~2016-03-29 16:35 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1458830676-27075-1-git-send-email-shannon.zhao@linaro.org>
2016-03-24 14:44 ` [PATCH v7 01/17] Xen: ACPI: Hide UART used by Xen Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 02/17] xen/grant-table: Move xlated_setup_gnttab_pages to common place Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 03/17] Xen: xlate: Use page_to_xen_pfn instead of page_to_pfn Shannon Zhao
2016-03-29 16:28 ` Julien Grall
[not found] ` <56FAAD48.2010401@arm.com>
2016-03-30 7:38 ` Shannon Zhao
[not found] ` <56FB8258.7030303@huawei.com>
2016-03-30 11:22 ` Julien Grall
[not found] ` <56FBB709.5050802@arm.com>
2016-03-30 12:42 ` Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 04/17] arm/xen: Use xen_xlate_map_ballooned_pages to setup grant table Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 05/17] xen: memory : Add new XENMAPSPACE type XENMAPSPACE_dev_mmio Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 06/17] Xen: ARM: Add support for mapping platform device mmio Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 07/17] Xen: ARM: Add support for mapping AMBA " Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 08/17] Xen: public/hvm: sync changes of HVM_PARAM_CALLBACK_VIA ABI from Xen Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 10/17] arm/xen: Get event-channel irq through HVM_PARAM when booting with ACPI Shannon Zhao
2016-03-29 16:35 ` Julien Grall [this message]
[not found] ` <56FAAEED.7060108@arm.com>
2016-03-30 7:34 ` Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 11/17] ARM: XEN: Move xen_early_init() before efi_init() Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 14/17] XEN: EFI: Move x86 specific codes to architecture directory Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 15/17] ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 16/17] FDT: Add a helper to get the subnode by given name Shannon Zhao
2016-03-24 14:44 ` [PATCH v7 17/17] Xen: EFI: Parse DT parameters for Xen specific UEFI Shannon Zhao
[not found] ` <1458830676-27075-2-git-send-email-shannon.zhao@linaro.org>
2016-03-24 15:08 ` [PATCH v7 01/17] Xen: ACPI: Hide UART used by Xen Rafael J. Wysocki
[not found] ` <CAJZ5v0iGHj1Hb3s=uJ34j0m88+3xtBQhbX47got=z1Ah_=LrkQ@mail.gmail.com>
2016-03-25 7:38 ` Shannon Zhao
2016-03-25 8:05 ` [PATCH v8 " Shannon Zhao
[not found] ` <1458893149-17388-1-git-send-email-zhaoshenglong@huawei.com>
2016-03-25 17:00 ` Rafael J. Wysocki
2016-03-25 17:15 ` Bjorn Helgaas
[not found] ` <7418231.W9aSFKr1zs@vostro.rjw.lan>
2016-03-26 13:14 ` Stefano Stabellini
[not found] ` <20160325171547.GB29822@localhost>
2016-03-26 12:44 ` Stefano Stabellini
2016-03-29 8:00 ` Shannon Zhao
2016-03-29 8:08 ` [RESEND PATCH v9 " Shannon Zhao
[not found] ` <1458830676-27075-12-git-send-email-shannon.zhao@linaro.org>
2016-03-26 12:54 ` [PATCH v7 11/17] ARM: XEN: Move xen_early_init() before efi_init() Stefano Stabellini
[not found] ` <alpine.DEB.2.02.1603261252510.18380@kaball.uk.xensource.com>
2016-03-29 16:07 ` Will Deacon
[not found] ` <20160329160756.GG6745@arm.com>
2016-03-31 11:12 ` Stefano Stabellini
[not found] ` <1458830676-27075-13-git-send-email-shannon.zhao@linaro.org>
2016-03-26 12:56 ` [PATCH v7 12/17] ARM64: ACPI: Check if it runs on Xen to enable or disable ACPI Stefano Stabellini
2016-03-29 16:18 ` Will Deacon
[not found] ` <20160329161837.GH6745@arm.com>
2016-03-29 16:31 ` Mark Rutland
[not found] ` <20160329163147.GB27223@leverpostej>
2016-03-30 7:19 ` Shannon Zhao
[not found] ` <56FB7E00.7030400@huawei.com>
2016-03-31 11:04 ` Stefano Stabellini
[not found] ` <alpine.DEB.2.02.1603311155450.11739@kaball.uk.xensource.com>
2016-03-31 11:44 ` Ard Biesheuvel
[not found] ` <CAKv+Gu-wPq_FzO3sm7bhSFuu7EVxHWB_v6HOn1GqNbdaE-iBoQ@mail.gmail.com>
2016-03-31 12:42 ` Mark Rutland
[not found] ` <20160331124216.GE26532@leverpostej>
2016-04-01 9:25 ` Shannon Zhao
[not found] ` <56FE3E85.60403@huawei.com>
2016-04-01 9:32 ` Shannon Zhao
[not found] ` <1458830676-27075-14-git-send-email-shannon.zhao@linaro.org>
2016-03-29 17:21 ` [PATCH v7 13/17] ARM: Xen: Document UEFI support on Xen ARM virtual platforms Julien Grall
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