From: Pavel Fedin <p.fedin@samsung.com>
To: 'Ashok Kumar' <ashoks@broadcom.com>
Cc: 'Peter Maydell' <peter.maydell@linaro.org>,
'Eric Auger' <eric.auger@linaro.org>,
'Shlomo Pongratz' <shlomo.pongratz@huawei.com>,
'Shlomo Pongratz' <shlomopongratz@gmail.com>,
qemu-devel@nongnu.org,
'Christoffer Dall' <christoffer.dall@linaro.org>
Subject: Re: [Qemu-devel] [PATCH v11 5/5] hw/arm/virt: Add gic-version option to virt machine
Date: Tue, 25 Aug 2015 16:53:15 +0300 [thread overview]
Message-ID: <015101d0df3d$64754330$2d5fc990$@samsung.com> (raw)
In-Reply-To: <"20150825134053.GB27329@ashoks"@broadcom.com>
Hello!
> In KVM case instead of assigning GICv2 as default, can we probe the KVM
> for GICv3 presence using KVM_CREATE_DEVICE_TEST and give priority to
> GICv3?
We could, but i think this would hurt usability. I suggest that when the user chooses a
configuration, he/she expects to get something particular. And IMHO it's much better to default to
GICv2 (to be backwards-compatible), and just report error in case if this is not supported by KVM,
than to default to something, which is different on different machines and different kernels.
Libvirt guys already blame "virt" machine for being too flexible...
Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia
next prev parent reply other threads:[~2015-08-25 13:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-19 7:23 [Qemu-devel] [PATCH v11 0/5] vGICv3 support Pavel Fedin
2015-08-19 7:23 ` [Qemu-devel] [PATCH v11 1/5] hw/intc: Implement GIC-500 base class Pavel Fedin
2015-08-19 7:23 ` [Qemu-devel] [PATCH v11 2/5] intc/gic: Extract some reusable vGIC code Pavel Fedin
2015-08-19 7:23 ` [Qemu-devel] [PATCH v11 3/5] arm_kvm: Do not assume particular GIC type in kvm_arch_irqchip_create() Pavel Fedin
2015-08-19 7:23 ` [Qemu-devel] [PATCH v11 4/5] hw/intc: Initial implementation of vGICv3 Pavel Fedin
2015-08-19 7:23 ` [Qemu-devel] [PATCH v11 5/5] hw/arm/virt: Add gic-version option to virt machine Pavel Fedin
2015-08-25 13:40 ` Ashok Kumar
[not found] ` <"20150825134053.GB27329@ashoks"@broadcom.com>
2015-08-25 13:53 ` Pavel Fedin [this message]
2015-08-25 13:31 ` [Qemu-devel] [PATCH v11 0/5] vGICv3 support Ashok Kumar
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