From: "Jürgen Groß" <jgross@suse.com>
To: "Chen, Jiqian" <Jiqian.Chen@amd.com>
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
"Huang, Ray" <Ray.Huang@amd.com>
Subject: Re: [RFC KERNEL PATCH v6 3/3] xen/privcmd: Add new syscall to get gsi from irq
Date: Fri, 10 May 2024 12:21:45 +0200 [thread overview]
Message-ID: <d0b5e7d5-3503-49be-9fa3-4b79c62059ca@suse.com> (raw)
In-Reply-To: <BL1PR12MB58491D2210091DF9607A354AE7E72@BL1PR12MB5849.namprd12.prod.outlook.com>
On 10.05.24 12:13, Chen, Jiqian wrote:
> On 2024/5/10 17:53, Jürgen Groß wrote:
>> On 10.05.24 11:06, Chen, Jiqian wrote:
>>> Hi,
>>>
>>> On 2024/5/10 14:46, Jürgen Groß wrote:
>>>> On 19.04.24 05:36, Jiqian Chen wrote:
>>>>> +
>>>>> + info->type = IRQT_PIRQ;
>>> I am considering whether I need to use a new type(like IRQT_GSI) here to distinguish with IRQT_PIRQ, because function restore_pirqs will process all IRQT_PIRQ.
>>
>> restore_pirqs() already considers gsi == 0 to be not GSI related. Isn't this
>> enough?
> No, it is not enough.
> xen_pvh_add_gsi_irq_map adds the mapping of gsi and irq, but the value of gsi is not 0,
> once restore_pirqs is called, it will do PHYSDEVOP_map_pirq for that gsi, but in pvh dom0, we shouldn't do PHYSDEVOP_map_pirq.
Okay, then add a new flag to info->u.pirq.flags for that purpose?
Juergen
next prev parent reply other threads:[~2024-05-10 10:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 3:36 [RFC KERNEL PATCH v6 0/3] Support device passthrough when dom0 is PVH on Xen Jiqian Chen
2024-04-19 3:36 ` [KERNEL PATCH v6 1/3] xen/pci: Add xen_reset_device_state function Jiqian Chen
2024-04-19 3:36 ` [RFC KERNEL PATCH v6 2/3] xen/pvh: Setup gsi for passthrough device Jiqian Chen
2024-05-10 7:48 ` Juergen Gross
2024-05-10 8:42 ` Chen, Jiqian
2024-04-19 3:36 ` [RFC KERNEL PATCH v6 3/3] xen/privcmd: Add new syscall to get gsi from irq Jiqian Chen
2024-05-10 6:46 ` Jürgen Groß
2024-05-10 9:06 ` Chen, Jiqian
2024-05-10 9:53 ` Jürgen Groß
2024-05-10 10:13 ` Chen, Jiqian
2024-05-10 10:21 ` Jürgen Groß [this message]
2024-05-10 10:32 ` Chen, Jiqian
2024-05-10 11:27 ` Jürgen Groß
2024-05-11 2:16 ` Chen, Jiqian
2024-05-13 7:47 ` Chen, Jiqian
2024-05-13 7:59 ` Jürgen Groß
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