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* x86: user_regset helpersRoland McGrath2008-01-301-0/+116
| | | | | | | | | | | | | | | | | | | | | This adds some inlines to linux/regset.h intended for arch code to use in its user_regset get and set functions. These make it pretty easy to deal with the interface's optional kernel-space or user-space pointers and its generalized access to a part of the register data at a time. In simple cases where the internal data structure matches the exported layout (core dump format), a get function can be nothing but a call to user_regset_copyout, and a set function a call to user_regset_copyin. In other cases the exported layout is usually made up of a few pieces each stored contiguously in a different internal data structure. These helpers make it straightforward to write a get or set function by processing each contiguous chunk of the data in order. The start_pos and end_pos arguments are always constants, so these inlines collapse to a small amount of code. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: user_regset headerRoland McGrath2008-01-301-0/+206
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new header <linux/regset.h> defines the types struct user_regset and struct user_regset_view, with some associated declarations. This new set of interfaces will become the standard way for arch code to expose user-mode machine-specific state. A single set of entry points into arch code can do all the low-level work in one place to fill the needs of core dumps, ptrace, and any other user-mode debugging facilities that might come along in the future. For existing arch code to adapt to the user_regset interfaces, each arch can work from the code it already has to support core files and ptrace. The formats you want for user_regset are the core file formats. The only wrinkle in adapting old ptrace implementation code as user_regset get and set functions is that these functions can be called on current as well as on another task_struct that is stopped and switched out as for ptrace. For some kinds of machine state, you may have to load it directly from CPU registers or otherwise differently for current than for another thread. (Your core dump support already handles this in elf_core_copy_regs for current and elf_core_copy_task_regs for other tasks, so just check there.) The set function should also be made to work on current in case that entails some special cases, though this was never required before for ptrace. Adding this flexibility covers the arch needs to open the door to more sophisticated new debugging facilities that don't always need to context-switch to do every little thing. The copyin/copyout helper functions (in a later patch) relieve the arch code of most of the cumbersome details of the flexible get/set interfaces. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify module_{32|64}.hHarvey Harrison2008-01-303-87/+79
| | | | | | | | | | This adds one case to the MODULE_PROC_FAMILY block testing for X86_64. There are no new things defined on X86_64 than there were before. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: use helper in fault_64.cHarvey Harrison2008-01-301-0/+2
| | | | | | | | Use the fixup_exception() helper in fault_64.c Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move i387 definitions to processor.hGlauber de Oliveira Costa2008-01-303-66/+66
| | | | | | | | | | This patch moves i387 definitions from processor_32.h and processor_64.h to processor.h. They are different. Very different. And there's appearently nothing we can do about it, so they're enclosed inside ifdefs. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify asm nopsGlauber de Oliveira Costa2008-01-303-129/+85
| | | | | | | | | | There's only one difference between the NOPs used in asm code for i386 and x86_64: i386 has a lot more variants. The code is moved to processor.h, and adjusted accordingly. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify prefetch operationsGlauber de Oliveira Costa2008-01-303-33/+30
| | | | | | | | This patch moves the prefetch[w]? functions to processor.h Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move definitions to processor.hGlauber de Oliveira Costa2008-01-303-41/+41
| | | | | | | | | | This patch moves definitions that are present in only one of the files (between processor_32.h and processor_64.h), to processor.h. They're mostly structures and function definitions. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify mm_segment_t definitionGlauber de Oliveira Costa2008-01-305-15/+6
| | | | | | | | | This patch moves the mm_segment_t structure definition to processor.h This makes mmsegment.h file useless, and it is deleted. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: remove legacy stuff from processor_64.hGlauber de Oliveira Costa2008-01-301-14/+0
| | | | | | | | | This patch removes definitions and macros that are not used anymore from processor_64.h Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify x86_cpuinfo struct.Glauber de Oliveira Costa2008-01-303-124/+82
| | | | | | | | | | x86_cpuinfo is one more to the family of "not fundamentally different" structs. It's unified in processor.h, with very specific fields enclosed around ifdefs. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: change bitwise operations to get a void parameter.Glauber de Oliveira Costa2008-01-301-19/+20
| | | | | | | | | | This patch changes the bitwise operations in bitops.h to get a void pointers as a parameter. Before this patch, a lot of warnings can be seen. They're gone after it. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify TASK_ALIGN definitionsGlauber de Oliveira Costa2008-01-303-9/+8
| | | | | | | | | | | This patch moves the TASK_ALIGN constraints to common header. The base of it is the same for x86_64 and i386. The only difference is the presence of vSMP in x86_64. As it's not a worry in i386, we can safely use the same code for both. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify thread struct.Glauber de Oliveira Costa2008-01-303-69/+44
| | | | | | | | | | The thread_struct is not fundamentally different between architectures, and this patch puts it in the common header. What's really unique for each of them is enclosed in ifdefs. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: provide 64-bit with a load_sp0 function.Glauber de Oliveira Costa2008-01-302-21/+21
| | | | | | | | | | | | Paravirt guests need to inform the underlying hypervisor whenever the sp0 tss field changes. i386 already has such a function, and we use it for x86_64 too. There's an unnecessary (for 64-bit) msr handling part in the original version, and it is placed around an ifdef. Making no more sense in processor_32.h, it is moved to the common header Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify tss_structGlauber de Oliveira Costa2008-01-304-97/+79
| | | | | | | | | | | Although slighly different, the tss_struct is very similar in x86_64 and i386. The really different part, which matchs the hardware vision of it, is now called x86_hw_tss, and each of the architectures provides yours. It's then used as a field in the outter tss_struct. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify current_text_addrGlauber de Oliveira Costa2008-01-303-12/+11
| | | | | | | | | | current_text_addr() has a different implementation in x86_64 and i386, but it is not fundamentally different. I stick to the i386 implementation, that seem to be a common base, and move it to processor.h Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify common parts of processor.hGlauber de Oliveira Costa2008-01-303-227/+120
| | | | | | | | | | This patch moves the pieces of processor_32.h and processor_64 that are equal to processor.h. Only what's exactly the same is moved around, the rest not being touched. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move the definition of set_iopl_mask to common headerGlauber de Oliveira Costa2008-01-302-17/+19
| | | | | | | | | | | | This patch moves the definition of set_iopl_mask to processor.h, instead of letting it at processor_32.h. For x86_64, nothing is done, as we don't really need such a function. However, having it on both arches saves us from putting an ifdef in the pv_cpu_ops struct. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify paravirt pieces of processor.hGlauber de Oliveira Costa2008-01-303-124/+89
| | | | | | | | | | | | This patch unifies the paravirt pieces of processor.h The functionality present in 32 bit, but not (yet) in 64-bit, like load_sp0 is _not_ done here, and let to a different patch. With this unification, we get paravirt for free in x86_64 processor.h Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move load_cr3 to a common place.Glauber de Oliveira Costa2008-01-303-6/+7
| | | | | | | | | There are currently two definitions of load_cr3, that essentially do the same thing. This patch moves them all to processor.h. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move desc_empty to where they belongGlauber de Oliveira Costa2008-01-303-12/+6
| | | | | | | | | This patch moves the (duplicated) desc_empty implementation to desc.h, where the descriptor things belong. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: get rid of _MASK flagsGlauber de Oliveira Costa2008-01-304-13/+3
| | | | | | | | | | | | | There's no need for the *_MASK flags (TF_MASK, IF_MASK, etc), found in processor.h (both _32 and _64). They have a one-to-one mapping with the EFLAGS value. This patch removes the definitions, and use the already existent X86_EFLAGS_ version when applicable. [ roland@redhat.com: KVM build fixes. ] Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move tsc definitions to were they belongGlauber de Oliveira Costa2008-01-302-5/+4
| | | | | | | | | This patch wipes out the definitions of tsc_disable from processor_32.h and move it to tsc.h, were it belongs Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify kexec_{32|64}.hHarvey Harrison2008-01-303-195/+167
| | | | | | | | | | One section collecting all constant defines. Ifdef the asm blocks for X86_32/64. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Vivek Goyal <vgoyal@redhat.com>
* x86: local.h fix checkpatch warningsHarvey Harrison2008-01-301-9/+8
| | | | | | | | Mostly space after comma, one space after if. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: unify local_{32|64}.hHarvey Harrison2008-01-303-430/+240
| | | | | | Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: introduce asm helpers in local_{32|64}.hHarvey Harrison2008-01-303-18/+30
| | | | | | | | Handle the use of long on X86_32 and quad on X86_64 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix asm memory constraints in local_64.hHarvey Harrison2008-01-301-16/+14
| | | | | | | | Use the shorter +m form rather than =m and m. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: clean up local_{32|64}.hHarvey Harrison2008-01-302-43/+16
| | | | | | | | | | Common prefix from both files moved to local.h Change __inline__ to inline Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: clean up include/asm-x86/pda.hCyrill Gorcunov2008-01-301-35/+35
| | | | | | | clean up include/asm-x86/pda.h, as suggested by checkpatch.pl. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: also define AT_VECTOR_SIZE_ARCHJan Beulich2008-01-301-2/+8
| | | | | | | | | | | The patch introducing this left out x86-64, despite it also having extra entries. [ mingo@elte.hu: re-merged this to after the unification patches. ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: adjust enable_NMI_through_LVT0()Jan Beulich2008-01-301-1/+1
| | | | | | | | | | | | | Its previous use in a call to on_each_cpu() was pointless, as at the time that code gets executed only one CPU is online. Further, the function can be __cpuinit, and for this to work without CONFIG_HOTPLUG_CPU setup_nmi() must also get an attribute (this one can even be __init; on 64-bits check_timer() also was lacking that attribute). Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: make __{save,restore}_processor_state staticJan Beulich2008-01-302-5/+0
| | | | | | | | | | | | .. allowing to remove their declarations from a global include file (the symbols don't exist for anything but x86). Likewise for 64-bits' fix_processor_context(), just that that one was properly declared in an arch-specific header. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: move to .rodata/.init.dataJan Beulich2008-01-301-1/+1
| | | | | | | | | The array is never written, and on 64-bits it's not even being used past initial boot. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86-64: honor notify_die() returning NOTIFY_STOPJan Beulich2008-01-301-2/+2
| | | | | | | | | | This requires making die() return a value, making its callers honor this (and be prepared that it may return), and making oops_end() have two additional parameters. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86-64: make pda's cpunumber and nodenumber unsignedJan Beulich2008-01-301-2/+2
| | | | | | | | | | | | This generally allows better code to be generated, since the zero- extension during 32-bit operations comes for free (needed when the result is used as array index or similar), whereas sign extension must be done explicitly and frequently requires a one byte larger instruction due to the necessary rex64 prefix. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* i386: hard_{en,dis}able_TSC can be staticJan Beulich2008-01-301-2/+0
| | | | | | Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: kprobes code for x86 unificationMasami Hiramatsu2008-01-303-209/+98
| | | | | | | | | | | | | | | | | | | This patch unifies kprobes code. - Unify kprobes_*.h to kprobes.h - Unify kprobes_*.c to kprobes.c (Differences are separated by ifdefs) - Most differences are related to REX prefix and rip relatives. - Two inline assembly code are different. - One difference in kprobe_handlre() - One fixup exception code is different, but it will be unified if mm/extable_*.c are unified. - Merge history logs into arch/x86/kernel/kprobes.c. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: prepare kprobes code for x86 unificationMasami Hiramatsu2008-01-302-26/+36
| | | | | | | | | | | | | | | | | | | | | | This patch cleanup kprobes code on x86 for unification. This patch is based on Arjan's previous work. - Remove spurious whitespace changes - Add harmless includes - Make the 32/64 files more identical - Generalize structure fields' and local variable name. - Wrap accessing to stack address by macros. - Modify bitmap making macro. - Merge fixup code into is_riprel() and change its name to fix_riprel(). - Set MAX_INSN_SIZE to 16 on both arch. - Use u32 for bitmaps on both architectures. - Clarify some comments. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: kprobe-booster for x86-64Masami Hiramatsu2008-01-301-0/+10
| | | | | | | | | | | | This patch adds kprobe-booster to kprobes_64.c. - Changes are based on x86-32. - Add REX prefix checking code. Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Jim Keniston <jkenisto@us.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: FIFO ticket spinlocksNick Piggin2008-01-303-94/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce ticket lock spinlocks for x86 which are FIFO. The implementation is described in the comments. The straight-line lock/unlock instruction sequence is slightly slower than the dec based locks on modern x86 CPUs, however the difference is quite small on Core2 and Opteron when working out of cache, and becomes almost insignificant even on P4 when the lock misses cache. trylock is more significantly slower, but they are relatively rare. On an 8 core (2 socket) Opteron, spinlock unfairness is extremely noticable, with a userspace test having a difference of up to 2x runtime per thread, and some threads are starved or "unfairly" granted the lock up to 1 000 000 (!) times. After this patch, all threads appear to finish at exactly the same time. The memory ordering of the lock does conform to x86 standards, and the implementation has been reviewed by Intel and AMD engineers. The algorithm also tells us how many CPUs are contending the lock, so lockbreak becomes trivial and we no longer have to waste 4 bytes per spinlock for it. After this, we can no longer spin on any locks with preempt enabled and cannot reenable interrupts when spinning on an irq safe lock, because at that point we have already taken a ticket and the would deadlock if the same CPU tries to take the lock again. These are questionable anyway: if the lock happens to be called under a preempt or interrupt disabled section, then it will just have the same latency problems. The real fix is to keep critical sections short, and ensure locks are reasonably fair (which this patch does). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* spinlock: lockbreak cleanupNick Piggin2008-01-304-16/+17
| | | | | | | | | | | | | | | | | | | | The break_lock data structure and code for spinlocks is quite nasty. Not only does it double the size of a spinlock but it changes locking to a potentially less optimal trylock. Put all of that under CONFIG_GENERIC_LOCKBREAK, and introduce a __raw_spin_is_contended that uses the lock data itself to determine whether there are waiters on the lock, to be used if CONFIG_GENERIC_LOCKBREAK is not set. Rename need_lockbreak to spin_needbreak, make it use spin_is_contended to decouple it from the spinlock implementation, and make it typesafe (rwlocks do not have any need_lockbreak sites -- why do they even get bloated up with that break_lock then?). Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86, ptrace: new ptrace BTS APIMarkus Metzger2008-01-303-46/+56
| | | | | | | | | | | | | | | | Here's the new ptrace BTS API that supports two different overflow handling mechanisms (wrap-around and buffer-full-signal) to support two different use cases (debugging and profiling). It further combines buffer allocation and configuration. Opens: - memory rlimit - overflow signal What would be the right signal to use? Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86, ptrace: change BTS GET ptrace interfaceMarkus Metzger2008-01-301-11/+6
| | | | | | | | Change the ptrace interface to mimick an array from newst to oldest. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86, ptrace: use jiffies for BTS timestampsMarkus Metzger2008-01-301-1/+1
| | | | | | | | Replace sched_clock() with jiffies for BTS timestamps. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: avoid ifdefs in desc.h, getting rid of pack_ldt and pack_tssGlauber de Oliveira Costa2008-01-301-40/+18
| | | | | | | | | | | | | By Andi Kleen's suggestion, this patch removes pack_ldt() and pack_tss() wrappers in favour of a general wrapper. It saves us an ifdef and some lines of code, but more importantly, it's more elegant. No functional change is made, although the object code is expected to be different. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86 boot: use E820 memory map on EFI 32 platformHuang, Ying2008-01-301-1/+1
| | | | | | | | | | | | Because the EFI memory map are converted to e820 memory map in bootloader, the EFI memory map handling code is removed to clean up. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: EFI runtime service support: remove duplicated code from efi_32.cHuang, Ying2008-01-301-0/+42
| | | | | | | | | | This patch removes the duplicated code between efi_32.c and efi.c. Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: EFI runtime service support: EFI runtime servicesHuang, Ying2008-01-301-0/+9
| | | | | | | | | | | | | | This patch adds support for several EFI runtime services for EFI x86_64 system. The EFI support for emergency_restart is added. Signed-off-by: Chandramouli Narayanan <mouli@linux.intel.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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