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aarch64: Enable IRQ routing for legacy devices

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On AArch64, interrupt controller (GIC) is emulated by KVM. VMM need to
set IRQ routing for devices, including legacy ones.

Before this commit, IRQ routing was only set for MSI. Legacy routing
entries of type KVM_IRQ_ROUTING_IRQCHIP were missing. That is way legacy
devices (like serial device ttyS0) does not work.

The setting of X86 IRQ routing entries are not impacted.

Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit is contained in:
Michael Zhao
2021-03-14 14:35:43 +08:00
committed by Xin Wang
parent 2a8bdf710d
commit afc83582be
6 changed files with 49 additions and 15 deletions
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4
vm-allocator/src/system.rs
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@@ -42,11 +42,11 @@ fn pagesize() -> usize {
/// #[cfg(target_arch = "x86_64")]
/// assert_eq!(allocator.allocate_irq(), Some(5));
/// #[cfg(target_arch = "aarch64")]
/// assert_eq!(allocator.allocate_irq(), Some(32));
/// assert_eq!(allocator.allocate_irq(), Some(0));
/// #[cfg(target_arch = "x86_64")]
/// assert_eq!(allocator.allocate_irq(), Some(6));
/// #[cfg(target_arch = "aarch64")]
/// assert_eq!(allocator.allocate_irq(), Some(33));
/// assert_eq!(allocator.allocate_irq(), Some(1));
/// assert_eq!(allocator.allocate_mmio_addresses(None, 0x1000, Some(0x1000)), Some(GuestAddress(0x1fff_f000)));
///
/// ```