[v2] Build fixes for minimal microvm

[PATCH for-11.0 v2 0/2] Build fixes for minimal microvm

Ani Sinha posted 2 patches 3 days ago

Diff against v1
Download series mbox

Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20260319122137.142178-1-anisinha@redhat.com

Maintainers: Paolo Bonzini <pbonzini@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Gerd Hoffmann <kraxel@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>

hw/i386/pc_sysfw.c            | 31 -------------------------------
hw/i386/pc_sysfw_ovmf-stubs.c |  5 +++++
hw/i386/pc_sysfw_ovmf.c       | 33 +++++++++++++++++++++++++++++++++
target/i386/kvm/hyperv-stub.c |  5 +++++
target/i386/kvm/hyperv.c      |  9 +++++++++
target/i386/kvm/hyperv.h      |  1 +
target/i386/kvm/kvm.c         | 12 +++++-------
7 files changed, 58 insertions(+), 38 deletions(-)

Expand all Fold all

[PATCH for-11.0 v2 0/2] Build fixes for minimal microvm

Posted by Ani Sinha 3 days ago

Some build fixes for building a minmal qemu for microvm 

cc -m64 @qemu-system-x86_64.rsp
ld: libqemu-x86_64-softmmu.a.p/target_i386_kvm_kvm.c.o: in function `hyperv_init_vcpu':
target/i386/kvm/kvm.c:1757:(.text+0x5d83): undefined reference to `hyperv_is_synic_enabled'
ld: libqemu-x86_64-softmmu.a.p/hw_i386_x86-common.c.o: in function `x86_bios_rom_reload':
hw/i386/x86-common.c:1104:(.text+0x240d): undefined reference to `x86_firmware_configure'
collect2: error: ld returned 1 exit status

The build is done with the devices file:

CONFIG_PCI_DEVICES=n
CONFIG_MICROVM=y
CONFIG_VIRTIO_BLK=y
CONFIG_VIRTIO_SERIAL=y
CONFIG_VIRTIO_INPUT=y
CONFIG_VIRTIO_INPUT_HOST=y
CONFIG_VHOST_USER_INPUT=y
CONFIG_VIRTIO_NET=y
CONFIG_VIRTIO_SCSI=y
CONFIG_VIRTIO_RNG=y
CONFIG_VIRTIO_CRYPTO=y
CONFIG_VIRTIO_BALLOON=y
CONFIG_VIRTIO_GPU=y
CONFIG_VHOST_USER_GPU=y

and with these confiure options:

../../configure ${common_configure_opts} \
              --without-default-features \
              --target-list=x86_64-softmmu --enable-kvm --disable-tcg \
              --enable-pixman --enable-vnc \
              --enable-virtfs \
              --enable-linux-aio --enable-linux-io-uring \
              --enable-numa \
              --enable-attr \
              --enable-coroutine-pool \
              --audio-drv-list="" \
              --without-default-devices \
              --with-devices-x86_64=microvm \
              --enable-vhost-kernel --enable-vhost-net \
              --enable-vhost-vdpa \
              --enable-vhost-user --enable-vhost-user-blk-server \
              --enable-vhost-crypto \
              --enable-seccomp

CI works: https://gitlab.com/anisinha/qemu/-/pipelines/2395426997

CC: mjt@tls.msk.ru
CC: qemu-devel@nongnu.org

Ani Sinha (2):
  i386/pc_sysfw: stub out x86_firmware_configure
  i386/hyperv: add stubs for synic enablement

 hw/i386/pc_sysfw.c            | 31 -------------------------------
 hw/i386/pc_sysfw_ovmf-stubs.c |  5 +++++
 hw/i386/pc_sysfw_ovmf.c       | 33 +++++++++++++++++++++++++++++++++
 target/i386/kvm/hyperv-stub.c |  5 +++++
 target/i386/kvm/hyperv.c      |  9 +++++++++
 target/i386/kvm/hyperv.h      |  1 +
 target/i386/kvm/kvm.c         | 12 +++++-------
 7 files changed, 58 insertions(+), 38 deletions(-)

-- 
2.42.0

Re: [PATCH for-11.0 v2 0/2] Build fixes for minimal microvm

Posted by Michael Tokarev 2 days, 22 hours ago

On 19.03.2026 15:21, Ani Sinha wrote:
> Some build fixes for building a minmal qemu for microvm
...
> CI works: https://gitlab.com/anisinha/qemu/-/pipelines/2395426997
> 
> CC: mjt@tls.msk.ru
> CC: qemu-devel@nongnu.org
> 
> Ani Sinha (2):
>    i386/pc_sysfw: stub out x86_firmware_configure
>    i386/hyperv: add stubs for synic enablement

Series:

Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>

and yes, you can fold the change suggested by Philippe.

Thanks,

/mjt