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Re: pci-arbiter: Implement mapping for ROM files


From: Samuel Thibault
Subject: Re: pci-arbiter: Implement mapping for ROM files
Date: Mon, 15 Aug 2022 19:37:40 +0200
User-agent: NeoMutt/20170609 (1.8.3)

Hello,

Joan Lledó, le lun. 15 août 2022 18:15:19 +0200, a ecrit:
> This has the obvious drawback of each arbiter instance having to copy all 
> devices ROMs into its space. It would be better to get the ROM physical 
> address somehow and map it into the arbiter space the same way we do for BAR 
> regions, but (AFAIK) libpciaccess doesn't provide a way for a client to get 
> the ROM physical address, only the ROM size is available.

Mmm, but doesn't libpciaccess allow to map the BAR? Then pci-arbiter
could create a read-only memory proxy of the mapping?

Samuel



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