From 42fda66387daa53538ae13a2c858396aaf037158 Mon Sep 17 00:00:00 2001 From: Jeff Dike Date: Tue, 16 Oct 2007 01:26:50 -0700 Subject: uml: throw out CONFIG_MODE_TT This patchset throws out tt mode, which has been non-functional for a while. This is done in phases, interspersed with code cleanups on the affected files. The removal is done as follows: remove all code, config options, and files which depend on CONFIG_MODE_TT get rid of the CHOOSE_MODE macro, which decided whether to call tt-mode or skas-mode code, and replace invocations with their skas portions replace all now-trivial procedures with their skas equivalents There are now a bunch of now-redundant pieces of data structures, including mode-specific pieces of the thread structure, pt_regs, and mm_context. These are all replaced with their skas-specific contents. As part of the ongoing style compliance project, I made a style pass over all files that were changed. There are three such patches, one for each phase, covering the files affected by that phase but no later ones. I noticed that we weren't freeing the LDT state associated with a process when it exited, so that's fixed in one of the later patches. The last patch is a tidying patch which I've had for a while, but which caused inexplicable crashes under tt mode. Since that is no longer a problem, this can now go in. This patch: Start getting rid of tt mode support. This patch throws out CONFIG_MODE_TT and all config options, code, and files which depend on it. CONFIG_MODE_SKAS is gone and everything that depends on it is included unconditionally. The few changed lines are in re-written Kconfig help, lines which needed something skas-related removed from them, and a few more which weren't strictly deletions. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/include/sysdep-x86_64/ptrace.h | 21 +-------------------- arch/um/include/sysdep-x86_64/thread.h | 4 ---- 2 files changed, 1 insertion(+), 24 deletions(-) (limited to 'arch/um/include/sysdep-x86_64') diff --git a/arch/um/include/sysdep-x86_64/ptrace.h b/arch/um/include/sysdep-x86_64/ptrace.h index 62403bd9966..ff525bda4c1 100644 --- a/arch/um/include/sysdep-x86_64/ptrace.h +++ b/arch/um/include/sysdep-x86_64/ptrace.h @@ -1,5 +1,6 @@ /* * Copyright 2003 PathScale, Inc. + * Copyright (C) 2003 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * * Licensed under the GPL */ @@ -14,11 +15,6 @@ #define MAX_REG_OFFSET (UM_FRAME_SIZE) #define MAX_REG_NR ((MAX_REG_OFFSET) / sizeof(unsigned long)) -#ifdef UML_CONFIG_MODE_TT -#include "sysdep/sc.h" -#endif - -#ifdef UML_CONFIG_MODE_SKAS #include "skas_ptregs.h" #define REGS_IP(r) ((r)[HOST_IP]) @@ -88,21 +84,10 @@ #define REGS_ERR(r) ((r)->fault_type) -#endif - #include "choose-mode.h" /* XXX */ union uml_pt_regs { -#ifdef UML_CONFIG_MODE_TT - struct tt_regs { - long syscall; - unsigned long orig_rax; - void *sc; - struct faultinfo faultinfo; - } tt; -#endif -#ifdef UML_CONFIG_MODE_SKAS struct skas_regs { unsigned long regs[MAX_REG_NR]; unsigned long fp[HOST_FP_SIZE]; @@ -110,14 +95,10 @@ union uml_pt_regs { long syscall; int is_user; } skas; -#endif }; #define EMPTY_UML_PT_REGS { } -/* XXX */ -extern int mode_tt; - #define UPT_RBX(r) __CHOOSE_MODE(SC_RBX(UPT_SC(r)), REGS_RBX((r)->skas.regs)) #define UPT_RCX(r) __CHOOSE_MODE(SC_RCX(UPT_SC(r)), REGS_RCX((r)->skas.regs)) #define UPT_RDX(r) __CHOOSE_MODE(SC_RDX(UPT_SC(r)), REGS_RDX((r)->skas.regs)) diff --git a/arch/um/include/sysdep-x86_64/thread.h b/arch/um/include/sysdep-x86_64/thread.h index cbef3e1697f..d73d0b0afdb 100644 --- a/arch/um/include/sysdep-x86_64/thread.h +++ b/arch/um/include/sysdep-x86_64/thread.h @@ -3,8 +3,4 @@ #include -#ifdef UML_CONFIG_MODE_TT -#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[HOST_TASK_EXTERN_PID])) -#endif - #endif -- cgit v1.2.3