Re: [PATCH 7/9] virtio-pci: harden INTX interrupts
From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2021-09-13 22:01:15
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On Mon, Sep 13, 2021 at 11:36:24PM +0200, Thomas Gleixner wrote:
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From the interrupt perspective the sequence:disable_irq(); vp_dev->intx_soft_enabled = true; enable_irq(); is perfectly fine as well. Any interrupt arriving during the disabled section will be reraised on enable_irq() in hardware because it's a level interrupt. Any resulting failure is either a hardware or a hypervisor bug.
yes but it's a shared interrupt. what happens if multiple callers do this in parallel? _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization