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Groups > linux.kernel > #1220071
| From | Laszlo Ersek <lersek@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2] QEMU fw_cfg DMA interface documentation |
| Date | 2015-09-07 13:30 +0200 |
| Message-ID | <q62My-47x-15@gated-at.bofh.it> (permalink) |
| References | <q3tge-3d0-9@gated-at.bofh.it> <q3tpU-3oo-13@gated-at.bofh.it> <q4bAB-82i-3@gated-at.bofh.it> <q4bKi-8dy-9@gated-at.bofh.it> <q62tc-3L3-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 09/07/15 13:08, Gerd Hoffmann wrote: > Hi, > >> It's just simplicity. If you want to read a few times from the same >> field (like in ACPI tables, read the data size and then the data), you >> need a way to enable and disable the selector and manage the current >> offset for that entry. This is already provided with the "old" >> interface. > > Could be handled with a 'select' control bit. Only when set select > entry and reset offset to zero. > > Also: would it make sense to allow an *array* of FWCfgDmaAccess structs? > With a 'more' bit in control we could indicate that there are more > entries. I'm not sure firmware would actually use that though ... Seems far-fetched. Thanks Laszlo > cheers, > Gerd > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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QEMU fw_cfg DMA interface Marc Marí <markmb@redhat.com> - 2015-08-31 11:10 +0200
[PATCH v2] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-08-31 11:20 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Stefan Hajnoczi <stefanha@gmail.com> - 2015-09-02 10:30 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-09-02 10:40 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Gerd Hoffmann <kraxel@redhat.com> - 2015-09-07 13:10 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Laszlo Ersek <lersek@redhat.com> - 2015-09-07 13:30 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Kevin O'Connor <kevin@koconnor.net> - 2015-09-08 18:50 +0200
Re: [PATCH v2] QEMU fw_cfg DMA interface documentation Marc Marí <markmb@redhat.com> - 2015-09-10 16:30 +0200
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