From: "Jürgen Groß" <jgross@suse.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Julien Grall <julien@xen.org>
Subject: Re: [PATCH v2 3/8] xen/events: avoid handling the same event on two cpus at the same time
Date: Thu, 18 Feb 2021 12:47:04 +0100 [thread overview]
Message-ID: <63e42922-204d-9d0e-6a02-49f64e7e8885@suse.com> (raw)
In-Reply-To: <6cc74d6b-d537-0e9f-9da8-45456f6b703e@oracle.com>
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On 15.02.21 22:35, Boris Ostrovsky wrote:
>
> On 2/11/21 5:16 AM, Juergen Gross wrote:
>
>> @@ -622,6 +623,7 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious)
>> }
>>
>> info->eoi_time = 0;
>> + smp_store_release(&info->is_active, 0);
>
>
> Can this be done in lateeoi_ack_dynirq()/lateeoi_mask_ack_dynirq(), after we've masked the channel? Then it will be consistent with how how other chips do it, especially with the new helper.
Yes, I think this should work.
Juergen
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next prev parent reply other threads:[~2021-02-18 13:34 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 10:16 [PATCH v2 0/8] xen/events: bug fixes and some diagnostic aids Juergen Gross
2021-02-11 10:16 ` [PATCH v2 1/8] xen/events: reset affinity of 2-level event when tearing it down Juergen Gross
2021-02-14 21:17 ` Julien Grall
2021-02-11 10:16 ` [PATCH v2 2/8] xen/events: don't unmask an event channel when an eoi is pending Juergen Gross
2021-02-11 10:16 ` [PATCH v2 3/8] xen/events: avoid handling the same event on two cpus at the same time Juergen Gross
2021-02-14 21:34 ` Julien Grall
2021-02-15 6:55 ` Jürgen Groß
2021-02-15 21:35 ` Boris Ostrovsky
2021-02-18 11:47 ` Jürgen Groß [this message]
2021-02-11 10:16 ` [PATCH v2 4/8] xen/netback: fix spurious event detection for common event case Juergen Gross
2021-02-11 10:53 ` Jan Beulich
2021-02-11 14:15 ` Paul Durrant
2021-02-11 15:24 ` Wei Liu
2021-02-11 10:16 ` [PATCH v2 5/8] xen/events: link interdomain events to associated xenbus device Juergen Gross
2021-02-11 14:16 ` Paul Durrant
2021-02-11 10:16 ` [PATCH v2 6/8] xen/events: add per-xenbus device event statistics and settings Juergen Gross
2021-02-15 21:54 ` Boris Ostrovsky
2021-02-11 10:16 ` [PATCH v2 7/8] xen/evtch: use smp barriers for user event ring Juergen Gross
2021-02-11 10:16 ` [PATCH v2 8/8] xen/evtchn: use READ/WRITE_ONCE() for accessing ring indices Juergen Gross
2021-02-17 13:29 ` Ross Lagerwall
2021-02-18 11:46 ` Jürgen Groß
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