Date: Tue, 18 Nov 2003 11:18:00 -0800 From: David O'Brien <obrien@FreeBSD.ORG> To: freebsd-current@freebsd.org Subject: Re: 5-CURRENT totally broken on AMD64 in 32-bit mode Message-ID: <20031118111800.A99760@hub.freebsd.org> In-Reply-To: <20031117181203.GA86840@dragon.nuxi.com>; from obrien@freebsd.org on Mon, Nov 17, 2003 at 10:12:03AM -0800 References: <20031117181203.GA86840@dragon.nuxi.com>
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On Mon, Nov 17, 2003 at 10:12:03AM -0800, David O'Brien wrote: > The kernel changes of the past week has totally turned my AMD64 machine > that I use in 32-bit mode running FreeBSD/i386 (GENERIC): > > OK boot -v > cpuid = 0; apic id = 00 > instruction pointer = 0x0:0xa00 > stack pointer = 0x0:0xffe > frame pointer = 0x0:0x0 > code segment = base 0x0, limit 0x0, type 0x0 > = DPL 0 , pres 0, def32 0, gran 0 > processor eflags = interrupt enabled, vm86, IOPL = 0 > cuyrrent process = 0 () > kernel: type 30 trap, code=0 > Stopped at 0xa00: cli > db> tr > (null)(0,0,0,0,0) at 0xa00 You get a panic (trap 30) that you can hit 'c<enter>' and continue from. It's actually only a trap, not a panic. I am trying to figure out the exact problem now. It seems that the vm86 code is very buggy and enables interrupts during the early boot. You can try http://www.FreeBSD.org/~jhb/patches/vm86.patch -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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