Date: Wed, 15 Jun 2011 15:57:05 +0200 From: Joerg Wunsch <freebsd-stable@uriah.heep.sax.de> To: freebsd-stable@freebsd.org Subject: doscmd under 8-stable, anyone? Message-ID: <20110615135704.GQ23206@uriah.heep.sax.de>
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When trying to use doscmd on 8-stable, all I get is:
Error mapping HMA, HMA disabled: : Invalid argument
Segmentation fault (core dumped)
The segfault happens at the end of mem_init(), when the allocated DOS
memory (which is located at virtual address 0) is attempted to be
written to. Apparently, the mmap() failure that causes the "HMA
disabled" message is actually a fatal error rather than a benign one
the could be ignored, as it results in no valid DOS memory allocation
at all.
Right now, the only older system I could test it against uses FreeBSD
5.x, where the mmap() works as expected. So does anyone have an idea
why this mmap() call:
if (mmap((caddr_t)0x000000, 0x100000,
PROT_EXEC | PROT_READ | PROT_WRITE,
MAP_ANON | MAP_FIXED | MAP_SHARED,
-1, 0) == MAP_FAILED) {
perror("Error mapping HMA, HMA disabled: ");
HMA_a20 = -1;
close(HMA_fd_off);
close(HMA_fd_on);
return;
}
yields an EINVAL now under 8-stable?
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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