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Re: acpi crashes, maybe /dev/mem is buggy?

From: Samuel Thibault
Subject: Re: acpi crashes, maybe /dev/mem is buggy?
Date: Sun, 28 Nov 2021 11:46:28 +0100
User-agent: NeoMutt/20170609 (1.8.3)


Andrea Monaco, le sam. 27 nov. 2021 22:38:10 +0100, a ecrit:
>   > Please post the gnumach boot logs, so we can see the biosmem table.
> GNU Mach 1.8
> biosmem: physical memory map:
> biosmem: 000000000000000000:00000000000009e800, available
> biosmem: 00000000000009e800:0000000000000a0000, reserved
> biosmem: 0000000000000e0000:000000000000100000, reserved
> biosmem: 000000000000100000:00000000008ecb9000, available
> biosmem: 00000000008ecb9000:00000000008f5b9000, reserved
> biosmem: 00000000008f5b9000:00000000009c9ce000, available
> biosmem: 00000000009c9ce000:00000000009cebe000, reserved
> biosmem: 00000000009cebe000:00000000009cfbe000, ACPI NVS
> biosmem: 00000000009cfbe000:00000000009cffe000, ACPI
> biosmem: 00000000009cffe000:00000000009cfff000, available
> biosmem: 00000000009cfff000:0000000000a0000000, reserved

Ok, I see, it's within a segment, and memmmap's call to
vm_page_lookup_pa was thus making it return page -1, which was not
actually properly dealt with (your program should actually have crashed,
not returned bogus data).

I have now fixed both issues in gnumach master.


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