Re: port-sparc64/54810: sparc64 pool_redzone_check errors during install

[mlelstv%serpens.de@localhost (Michael van Elst)]

The following reply was made to PR port-sparc64/54810; it has been noted by GNATS.

From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-sparc64/54810: sparc64 pool_redzone_check errors during install
Date: Mon, 26 Oct 2020 09:25:28 -0000 (UTC)

 gson%gson.org@localhost (Andreas Gustafsson) writes:
 
 > Maybe some lower layer ends up reading an entire 2048-byte CD-ROM
 > block into a 1024-byte buffer?
 
 There is magic code for sun hardware and the cd driver. The sun code
 fakes a block size of 512 bytes in the disklabel and the cd driver
 emulates such accesses if the hardware reports a different block size
 (an original Sun CD-ROM can be configured to 512 byte blocks, most
 others cannot).
 
 That's the only regular case where disklabel and driver disagree on
 block size.
 
 -- 
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                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."