Messages in this thread | | | Date | Mon, 13 Sep 2021 18:01:04 -0400 | From | "Michael S. Tsirkin" <> | Subject | Re: [PATCH 7/9] virtio-pci: harden INTX interrupts |
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On Mon, Sep 13, 2021 at 11:36:24PM +0200, Thomas Gleixner wrote: > >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?
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