Re: Fwd: Enable IOMMU Inside QEMU

[Peter Xu]

On Tue, Oct 06, 2020 at 11:26:08PM +0530, Alok Prasad wrote:
> root@beta-hp-p70:/home/fastlinq/alok/KVM-VM# /usr/bin/qemu-system-x86_64
> --version
> QEMU emulator version 4.2.1
> Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
> 
> I am missing here something,? Is there seperate Branch for the same in qemu.

No, it should always be in mainline.

I didn't see anything obviously wrong in your setup.  A simplest QEMU cmdline
to boot a guest with vIOMMU should be:

$QEMU -machine q35,kernel-irqchip=split,accel=kvm -smp 4 -m 2G \
      -device intel-iommu ~/images/default.qcow2

May worth try this directly.  Also feel free to compile the latest QEMU.  The
default configuration should work.

-- 
Peter Xu