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From: | Cédric Le Goater |
Subject: | Re: [Qemu-devel] [PATCH] spapr: Don't use the "dual" interrupt controller mode with an old hypervisor |
Date: | Fri, 7 Jun 2019 10:27:16 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 |
> kernel_irqchip > > (default) > ic-mode allowed off on > > dual XICS KVM XICS emul.(3) XICS KVM (default mode) > xics XICS KVM XICS emul. XICS KVM > xive XIVE emul.(1) XIVE emul. QEMU failure (2) > > > (1) QEMU warns with "warning: kernel_irqchip requested but unavailable: > IRQ_XIVE capability must be present for KVM" > (2) QEMU fails with "kernel_irqchip requested but unavailable: > IRQ_XIVE capability must be present for KVM" > (3) That is wrong I think, we should get XIVE emulated. > > > what you would want is XIVE emulation when ic-mode=dual and > kernel_irqchip=allowed, which is the behavior with this patch (but there ^ without > are reboot bugs)
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