[haiku-bugs] Re: [Haiku] #1925: Reboot during startup on Toshiba Satellite 2615DVD/6.0
- From: "bonefish" <trac@xxxxxxxxxxxx>
- Date: Tue, 02 Mar 2010 21:11:46 -0000
#1925: Reboot during startup on Toshiba Satellite 2615DVD/6.0
---------------------------+------------------------------------------------
Reporter: umccullough | Owner: bonefish
Type: bug | Status: assigned
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/pre-alpha1
Keywords: | Blockedby:
Platform: x86 | Blocking:
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Comment(by bonefish):
Replying to [comment:41 umccullough]:
> I'll run memtest86+ all day today to see if it finds anything. I have it
set to "e820-All" to hopefully force it to test something that wouldn't
otherwise be tested.
I suspect this is a BIOS issue (incorrect entry for the physical range)
rather than defective memory. The question is why Linux doesn't have a
problem with it. Maybe they treat certain ranges specially. I suppose we
could ignore the ranges below 1 MB just as well. We already reserve 0x0 -
0xa0000 (dma_region) and 0xe0000 - 0x100000 (pc bios), which leaves only
the 256 KB between 0xa0000 and 0xe0000. Neither in your example nor when I
use qemu there's any usable memory in this range, anyway. I don't know how
far [http://wiki.osdev.org/Memory_Map_%28x86%29] can be trusted, but it
essentially claims that 0xa0000 through 0x100000 is never usable.
--
Ticket URL: <http://dev.haiku-os.org/ticket/1925#comment:42>
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