Re: [PULL 0/6] hw/nvme updates

[Klaus Jensen]

On Mar 12 11:34, Peter Maydell wrote:
> On Mon, 11 Mar 2024 at 19:11, Klaus Jensen <its@irrelevant.dk> wrote:
> >
> > From: Klaus Jensen <k.jensen@samsung.com>
> >
> > Hi,
> >
> > The following changes since commit 7489f7f3f81dcb776df8c1b9a9db281fc21bf05f:
> >
> >   Merge tag 'hw-misc-20240309' of https://github.com/philmd/qemu into 
> > staging (2024-03-09 20:12:21 +0000)
> >
> > are available in the Git repository at:
> >
> >   https://gitlab.com/birkelund/qemu.git tags/nvme-next-pull-request
> >
> > for you to fetch changes up to a1505d799232939bf90c1b3e1fc20e81cd398404:
> >
> >   hw/nvme: add machine compatibility parameter to enable msix exclusive bar 
> > (2024-03-11 20:07:41 +0100)
> >
> > ----------------------------------------------------------------
> > hw/nvme updates
> > -----BEGIN PGP SIGNATURE-----
> >
> > iQEzBAABCgAdFiEEUigzqnXi3OaiR2bATeGvMW1PDekFAmXvVsYACgkQTeGvMW1P
> > DemWtwf9HU3cjtvCp8AeHGoPFTwp8/Vx3cQlQ6ilADKSDm44up2+M504xE/Mdviv
> > 6y3PTPe1yiEpg/MbjWTX/df5lo+VdNoCuCyjph9mea0s1QAjCfVpl+KLMUVF/Oj5
> > y1Iz9PQqOVDJ3O4xlgmPTfd8NXE/frNJaiXAjFuBxF2+4lilD5kMxpyu7DXbLiy2
> > Szd1I3DhFAEOLEbrSSRDI3Fpy0KBdRzdKuUfmRdrHzbmhzHJefW7wnZ3aAiDboaD
> > Ny7y/aovmjGymMp9GrBKWhUFPfSUtJ8l8j4Z7acQs+VDxg8lcAHCJKOyqCBTspUL
> > PSnDe6E/CRyjrG2fUVXTLb6YW1eibQ==
> > =Ld7a
> > -----END PGP SIGNATURE-----
> 
> Hi; I'm afraid this fails to build for some jobs, eg
> https://gitlab.com/qemu-project/qemu/-/jobs/6373091994
> https://gitlab.com/qemu-project/qemu/-/jobs/6373091978
> https://gitlab.com/qemu-project/qemu/-/jobs/6373091975
> 
> ../hw/nvme/ctrl.c: In function ‘nvme_realize’:
> ../hw/nvme/ctrl.c:8146:15: error: ‘msix_pba_offset’ may be used
> uninitialized in this function [-Werror=maybe-uninitialized]
> 8146 | ret = msix_init(pci_dev, n->params.msix_qsize,
>      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 8147 | &n->bar0, 0, msix_table_offset,
>      | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 8148 | &n->bar0, 0, msix_pba_offset, 0, errp);
>      | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../hw/nvme/ctrl.c:8099:33: note: ‘msix_pba_offset’ was declared here
> 8099 | unsigned msix_table_offset, msix_pba_offset;
>      | ^~~~~~~~~~~~~~~
> ../hw/nvme/ctrl.c:8135:9: error: ‘msix_table_offset’ may be used
> uninitialized in this function [-Werror=maybe-uninitialized]
> 8135 | memory_region_init_io(&n->iomem, OBJECT(n), &nvme_mmio_ops, n, "nvme",
>      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 8136 | msix_table_offset);
>      | ~~~~~~~~~~~~~~~~~~
> ../hw/nvme/ctrl.c:8099:14: note: ‘msix_table_offset’ was declared here
> 8099 | unsigned msix_table_offset, msix_pba_offset;
>      | ^~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> 
> 
> I think this is because the compiler notices that nvme_mbar_size() has
> an early-exit code path which never initializes *msix_table_offset
> and *msix-pba_offset.
> 

Crap, yeah. I'll fix it up. Thanks!

signature.asc
Description: PGP signature