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[PATCH] i386: Basic definitions for i386-pda

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This patch has the basic definitions of struct i386_pda, and the segment
selector in the GDT.

asm-i386/pda.h is more or less a direct copy of asm-x86_64/pda.h.  The most
interesting difference is the use of _proxy_pda, which is used to give gcc a
model for the actual memory operations on the real pda structure.  No actual
reference is ever made to _proxy_pda, so it is never defined.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Jeremy Fitzhardinge
2006-12-07 02:14:02 +01:00
committed by Andi Kleen
parent eb5b7b9d86
commit 9ca36101a8
3 changed files with 100 additions and 2 deletions
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5
include/asm-i386/segment.h
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@ -39,7 +39,7 @@
* 25 - APM BIOS support
*
* 26 - ESPFIX small SS
* 27 - unused
* 27 - PDA [ per-cpu private data area ]
* 28 - unused
* 29 - unused
* 30 - unused
@ -74,6 +74,9 @@
#define GDT_ENTRY_ESPFIX_SS (GDT_ENTRY_KERNEL_BASE + 14)
#define __ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)
#define GDT_ENTRY_PDA (GDT_ENTRY_KERNEL_BASE + 15)
#define __KERNEL_PDA (GDT_ENTRY_PDA * 8)
#define GDT_ENTRY_DOUBLEFAULT_TSS 31
/*