Messages in this thread | | | Date | Wed, 14 Dec 2011 14:58:20 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 3/4] EFI: Add support for variables longer than 1024 bytes |
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On 12/14/2011 02:57 PM, Matthew Garrett wrote: > On Wed, Dec 14, 2011 at 02:44:34PM -0800, H. Peter Anvin wrote: >> On 12/14/2011 02:39 PM, Matthew Garrett wrote: >>>> What are your thoughts on _not_ wrapping efi_variable with >>>> extended_efi_variable, and instead just using a >>>> "internal_efi_variable" structure that we copy stuff into/outof. I >>>> think that would make the memory management for dealing with the >>>> different sizes a lot easier to follow. >>> >>> Hm. I think that'd only work if we expose a new interface. Writes would >>> be easy enough to handle, but reads still need to work for old apps. >>> >> >> Would making the old ABI readonly and add a new write interface resolve >> the problem with compat mode? > > Yes, but we'd break existing userspace. >
Obviously. However, you indicated above that that might be acceptable -- how many things use this ABI to set variables?
-hpa
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