Re: i386 pda patches

From: Jeremy Fitzhardinge
Date: Sun Sep 24 2006 - 20:40:31 EST

Andrew Morton wrote:
I am unable to correlate what's in Andi's tree with the PDA-related emails
on this list. Why is this?

I'm not sure what's in Andi's tree. He mentioned that he had trouble merging a previous patch I had, but it wasn't a particularly big change.

Andi, where can I get your tree?

Anyway, the PDA patches are causing my little old dual-pIII to reboot about
one second into the boot process.

Interesting. Have there been any other complaints about -mm crashing? There's nothing in here which is "new cpu"; it should work the same all the way back to an i386.

Bisection says:

x86_64-mm-i386-pda-basics.patch OK
x86_64-mm-i386-pda-init-pda.patch oops
x86_64-mm-i386-pda-use-gs.patch reboot
x86_64-mm-i386-pda-user-abi.patch BAD

So x86_64-mm-i386-pda-init-pda.patch causes the below oops and
x86_64-mm-i386-pda-use-gs.patch causes the instareboot.

Compat vDSO mapped to ffffe000.
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
CPU0: Intel Pentium III (Coppermine) stepping 03
SMP alternatives: switching to SMP code
Booting processor 1/1 eip 2000
Initializing CPU#1
general protection fault: 0080 [#1]
SMP last sysfs file: Modules linked in:
CPU: 1
EIP: 0060:[<c010ad63>] Not tainted VLI
EFLAGS: 00010086 (2.6.18 #8) EIP is at cpu_init+0x153/0x2b0
What line does this EIP correspond to?

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