Messages in this thread | | | Subject | Re: [RFC,PATCH v2] efi: Add support for a UEFI variable filesystem | From | joeyli <> | Date | Thu, 13 Sep 2012 16:10:43 +0800 |
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於 二,2012-09-11 於 15:23 +0800,lee joey 提到: > From: Matthew Garrett <mjg@redhat.com> > > The existing EFI variables code only supports variables of up to 1024 > bytes. This limitation existed in version 0.99 of the EFI > specification, > but was removed before any full releases. Since variables can now be > larger than a single page, sysfs isn't the best interface for this. > So, > instead, let's add a filesystem. Variables can be read, written and > created, with the first 4 bytes of each variable representing its UEFI > attributes. The create() method doesn't actually commit to flash since > zero-length variables can't exist per-spec. > > Updates from Jeremy Kerr <jeremy.kerr@canonical.com>. > > Signed-off-by: Matthew Garrett <mjg@redhat.com> > Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> > > --- > v2: Add check for < 4-byte writes
Do we have plan to create a new kobject add to /sys/firmware/efi for provide a fixed mount point to efivars fs? e.g. /sys/firmware/efi/efivars
Or we just direct reuse current /sys/firmeware/efi/vars? But, that means we need think for the backward compatibility if choice reuse vars folder.
Thanks a lot! Joey Lee
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