Re: [Xen-devel] [PATCH for-4.13 v2 2/2] x86/ioapic: fix clear_IO_APIC_pin write of raw entries

2019-11-12 Thread Roger Pau Monné
On Mon, Nov 11, 2019 at 10:56:21AM +0100, Jan Beulich wrote: > On 10.11.2019 10:25, Roger Pau Monne wrote: > > clear_IO_APIC_pin can be called after the iommu has been enabled, and > > using raw reads and writes to modify IO-APIC entries that have been > > setup to use interrupt remapping can lead

Re: [Xen-devel] [PATCH for-4.13 v2 2/2] x86/ioapic: fix clear_IO_APIC_pin write of raw entries

2019-11-11 Thread Jan Beulich
On 10.11.2019 10:25, Roger Pau Monne wrote: > clear_IO_APIC_pin can be called after the iommu has been enabled, and > using raw reads and writes to modify IO-APIC entries that have been > setup to use interrupt remapping can lead to issues as some of the > fields have different meaning when the

[Xen-devel] [PATCH for-4.13 v2 2/2] x86/ioapic: fix clear_IO_APIC_pin write of raw entries

2019-11-10 Thread Roger Pau Monne
clear_IO_APIC_pin can be called after the iommu has been enabled, and using raw reads and writes to modify IO-APIC entries that have been setup to use interrupt remapping can lead to issues as some of the fields have different meaning when the IO-APIC entry is setup to point to an interrupt