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Re: [Qemu-devel] [PATCH] 9pfs: fix dependencies
From: |
Greg Kurz |
Subject: |
Re: [Qemu-devel] [PATCH] 9pfs: fix dependencies |
Date: |
Tue, 8 Aug 2017 18:26:23 +0200 |
On Tue, 8 Aug 2017 17:38:27 +0200
Cornelia Huck <address@hidden> wrote:
> Nothing in fsdev/ or hw/9pfs/ depends on pci; it should rather depend
> on CONFIG_VIRTFS and on the presence of an appropriate virtio transport
> device.
>
> Let's introduce CONFIG_VIRTIO_CCW to cover s390x and check for
> CONFIG_VIRTFS && (CONFIG_VIRTIO_PCI || CONFIG_VIRTIO_CCW).
>
> Signed-off-by: Cornelia Huck <address@hidden>
> ---
>
> This is the alternative approach to "9pfs: fix and simplify dependencies".
> Uglier; but probably not broken...
>
Yikes. I don't know why yet but this doesn't work for PCI-less targets
like cris-softmmu...
LINK cris-softmmu/qemu-system-cris
vl.o: In function `fsdev_init_func':
vl.c:2360: undefined reference to `qemu_fsdev_add'
> ---
> default-configs/s390x-softmmu.mak | 1 +
> fsdev/Makefile.objs | 9 +++------
> hw/Makefile.objs | 2 +-
> 3 files changed, 5 insertions(+), 7 deletions(-)
>
> diff --git a/default-configs/s390x-softmmu.mak
> b/default-configs/s390x-softmmu.mak
> index 51191b77df..e4c5236ceb 100644
> --- a/default-configs/s390x-softmmu.mak
> +++ b/default-configs/s390x-softmmu.mak
> @@ -8,3 +8,4 @@ CONFIG_S390_FLIC=y
> CONFIG_S390_FLIC_KVM=$(CONFIG_KVM)
> CONFIG_VFIO_CCW=$(CONFIG_LINUX)
> CONFIG_WDT_DIAG288=y
> +CONFIG_VIRTIO_CCW=y
> diff --git a/fsdev/Makefile.objs b/fsdev/Makefile.objs
> index 659df6e187..10d8caa291 100644
> --- a/fsdev/Makefile.objs
> +++ b/fsdev/Makefile.objs
> @@ -1,10 +1,7 @@
> -ifeq ($(CONFIG_VIRTIO)$(CONFIG_VIRTFS)$(CONFIG_PCI),yyy)
> # Lots of the fsdev/9pcode is pulled in by vl.c via qemu_fsdev_add.
> -# only pull in the actual virtio-9p device if we also enabled virtio.
> -common-obj-y = qemu-fsdev.o 9p-marshal.o 9p-iov-marshal.o
> -else
> -common-obj-y = qemu-fsdev-dummy.o
> -endif
> +# only pull in the actual virtio-9p device if we also enabled a virtio
> backend.
> +common-obj-$(call land, $(CONFIG_VIRTFS),$(call lor,
> $(CONFIG_VIRTIO_PCI),$(CONFIG_VIRTIO_CCW)))= qemu-fsdev.o 9p-marshal.o
> 9p-iov-marshal.o
> +common-obj-$(call lnot, $(call land, $(CONFIG_VIRTFS),$(call lor,
> $(CONFIG_VIRTIO_PCI),$(CONFIG_VIRTIO_CCW)))) = qemu-fsdev-dummy.o
> common-obj-y += qemu-fsdev-opts.o qemu-fsdev-throttle.o
>
> # Toplevel always builds this; targets without virtio will put it in
> diff --git a/hw/Makefile.objs b/hw/Makefile.objs
> index a2c61f6b09..10942fe0b4 100644
> --- a/hw/Makefile.objs
> +++ b/hw/Makefile.objs
> @@ -1,4 +1,4 @@
> -devices-dirs-$(call land, $(CONFIG_VIRTIO),$(call
> land,$(CONFIG_VIRTFS),$(CONFIG_PCI))) += 9pfs/
> +devices-dirs-$(call land, $(CONFIG_VIRTFS),$(call
> lor,$(CONFIG_VIRTIO_PCI),$(CONFIG_VIRTIO_CCW))) += 9pfs/
> devices-dirs-$(CONFIG_SOFTMMU) += acpi/
> devices-dirs-$(CONFIG_SOFTMMU) += adc/
> devices-dirs-$(CONFIG_SOFTMMU) += audio/
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