v1.26.3

This release provides major improvements in interrupt and network support, aimed at improved performance and compatibility with UEFI, AMD SEV-SNP environments and the new go-net stack/device abstraction driver. Additionally Firecracker support and QEMU sifive_u support are aligned to recent updates.

Major changes for tamago package API to improve GICv2 interrupt support:

• arm: (*CPU).Init drops argument as vbar override can be linknamed as vecTableStart(c514b55)
• arm/gic: (*GIC).Init secure argument removed and assumed true (c00208e)
• arm/gic: (*GIC).Init drop fiqen argument in favor of *(GIC).FIQEn (c00208e)
• arm/gic: (*GIC).EnableInterrupts secure argument removed and assumed true (c00208e)
• arm/gic: (*GIC).GetInterrupt secure argument removed and assumed true (c00208e)
• arm/gic: (*GIC).GetNonSecureInterrupt new function to acknowledge NS IRQ (c00208e)
• arm/gic: (*GIC).SetInterruptGroup, (*GIC).SetInterruptGroups new functions to set S/NS IRQ (c00208e)

Major changes for tamago package API to improve Microchip support:

• microchip/flexcom: (*FLEXCOM).EnableInterrupt new function to enable IRQ support (c01f01e)
• microchip/flexcom: (*FLEXCOM).Rx now takes block argument for conditional data wait (c01f01e)
• microchip/lan969x: ClearInterrupt new function to signal end of interrupt servicing (fbbfda2)

Major changes for tamago package API to add go-net compatibility:

• nxp/spi: add NXP ECSPI driver (dd5192b)
• nxp/enet: (*ENET).Receive replaces (*ENET).Rx for go-net generic NetworkDevice compatibility (d194fa3)
• nxp/enet: (*ENET).Transmit replaces (*ENET).Tx for go-net generic NetworkDevice compatibility (d194fa3)
• nxp/enet: removed polling support from (*ENET).Start and (*ENET).RxHandler field (d194fa3)

Major changes for tamago package API:

• riscv64: (*CPU).SetExceptionHandler restore function for TEE use (7afa079)
• virtio: (*VirtualQueue).NeedsNotify new function to hint (*VirtualQueue).QueueNotify (6419be1)
• virtio: (*VirtualQueue).Pop now takes caller buffer rather than returning one (e7d4ff8)
• virtio: add EnableInterrupt to VirtIO interface, (*MMIO).EnableInterrupt dummy function (b5ad5a4)

Major changes for tamago package internals:

• amd64: do not overwrite VMM Communication ISR (75921b5)
• amd64: reload GDT if required before IDT load (b757d2d)
• amd64: keep original GDT/IDT if cpuinit override is detected (d0233f3)
• amd64: use fresh CR3 before initializing SMP (4b7af08)
• amd64: avoid atomic MMIO operations under SEV-SNP (63941dd)
• arm64: force 2048-byte alignment of vector base address register (3f7e6ce, 94b9c0c)
• nxp/enet: force 8-byte alignment on DMA buffer copy to fix arm64 alignment fault (2575b98)
• firecracker/microvm: disable PIC to address spurious #UD exception (firecracker-microvm/firecracker#5805, 814a9cb)
• sifive/uart: set tx/rx enable (29100db)
• virtio: fix regression in VirtIO queue logic error which resulted in packet buffer overhead (e7d4ff8)

Full Changelog: v1.26.2...v1.26.3

This release requires GOOS=tamago support in the Go distribution with tamago-go1.26.2 or later releases, it has been tested with tamago-go1.26.3.