[SeaBIOS] Re: [PATCH] ahci: zero-initialize port struct

[Sam Eiderman]

Sorry the correct list (which includes ahci) is:

git grep "drive_s * drive"

src/hw/ahci.h:    struct drive_s     drive;
src/hw/ata.h:    struct drive_s drive;
src/hw/esp-scsi.c:    struct drive_s drive;
src/hw/lsi-scsi.c:    struct drive_s drive;
src/hw/megasas.c:    struct drive_s drive;
src/hw/mpt-scsi.c:    struct drive_s drive;
src/hw/nvme-int.h:    struct drive_s drive;
src/hw/pvscsi.c:    struct drive_s drive;
src/hw/sdcard.c:    struct drive_s drive;
src/hw/usb-msc.c:    struct drive_s drive;
src/hw/usb-uas.c:    struct drive_s drive;
src/hw/virtio-blk.c:    struct drive_s drive;
src/hw/virtio-scsi.c:    struct drive_s drive;

Went over this list now, seems only ahci_port_alloc was missing
memset(0) so after this patch all of the devices that contain lchs are
covered.

But we still need to revert my lchs patches and reapply them with the
newest version (v4)

Sam

On Wed, Nov 13, 2019 at 5:18 PM Sam Eiderman  wrote:
> We should make sure drive.lchs is zeroed out for the following devices:
>
> git grep "drive_s drive"
>
> src/hw/ata.h:    struct drive_s drive;
> src/hw/esp-scsi.c:    struct drive_s drive;
> src/hw/lsi-scsi.c:    struct drive_s drive;
> src/hw/megasas.c:    struct drive_s drive;
> src/hw/mpt-scsi.c:    struct drive_s drive;
> src/hw/nvme-int.h:    struct drive_s drive;
> src/hw/pvscsi.c:    struct drive_s drive;
> src/hw/sdcard.c:    struct drive_s drive;
> src/hw/usb-msc.c:    struct drive_s drive;
> src/hw/usb-uas.c:    struct drive_s drive;
> src/hw/virtio-blk.c:    struct drive_s drive;
> src/hw/virtio-scsi.c:    struct drive_s drive;
>
> Sam
>
> On Wed, Nov 13, 2019 at 5:03 PM Sam Eiderman  wrote:
> > Hi,
> >
> > Does this fix a bug that actually happened?
> >
> > I just noticed that in my lchs patches I assumed that lchs struct is
> > zeroed out in all devices (not only ahci):
> >
> > 9caa19be0e53 (geometry: Apply LCHS values for boot devices)
> >
> > Seems like this is not the case but why only ahci is affected?
> >
> > The list of devices is at least:
> >     * ata
> >     * ahci
> >     * scsi
> >         * esp
> >         * lsi
> >         * megasas
> >         * mpt
> >         * pvscsi
> >         * virtio
> >     * virtio-blk
> >
> > As specified in the commit message.
> >
> > Also Gerd it seems that my lchs patches were not committed in the
> > latest submitted version (v4)!!!
> > The ABI of the fw config key is completely broken.
> >
> > On Wed, Nov 13, 2019 at 4:02 PM Gerd Hoffmann  wrote:
> > > On Wed, Nov 13, 2019 at 10:35:03AM +0100, Laszlo Ersek wrote:
> > > > On 11/13/19 10:18, Gerd Hoffmann wrote:
> > > > > Specifically port->driver.lchs needs clearing, otherwise seabios will
> > > >
> > > > s/driver/drive/
> > > > Reviewed-by: Laszlo Ersek
> > >
> > > Typo fixed & pushed.
> > >
> > > thanks,
> > >   Gerd
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