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2008-01-30x86: prepare time related functions for paravirtGlauber de Oliveira Costa
This patch add provisions for time related functions so they can be later replaced by paravirt versions. it basically encloses {g,s}et_wallclock inside the already existent functions update_persistent_clock and read_persistent_clock, and defines {s,g}et_wallclock to the core of such functions. it also allow for a later-on-game time initialization, as done by i386. Paravirt guests can set a function to do their own initialization this way. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: turn priviled operation into a macro in head_64.SGlauber de Oliveira Costa
under paravirt, read cr2 cannot be issued directly anymore. So wrap it in a macro, defined to the operation itself in case paravirt is off, but to something else if we have paravirt in the game Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: export cpu_gdt_descrGlauber de Oliveira Costa
With paravirualization, hypervisors needs to handle the gdt, that was right to this point only used at very early inialization code. Hypervisors (lguest being the current case) are commonly modules, so make it an export Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 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>
2008-01-30x86: export math_state_restoreGlauber de Oliveira Costa
Export math_state_restore symbol, so it can be used for hypervisors. They are commonly loaded as modules (lguest being an example). Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 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>
2008-01-30x86: unify mmap_{32|64}.cHarvey Harrison
mmap_is_ia32 always true for X86_32, or while emulating IA32 on X86_64 Randomization not supported on X86_32 in legacy layout. Both layouts allow randomization on X86_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>
2008-01-30x86: clean up mm/init_32.cJeremy Fitzhardinge
Some code reformatting in init_32.c. No functional change. Signed-off-by: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: kill mk_pte_hugeJeremy Fitzhardinge
It only has a single use, which can be trivially replaced. Signed-off-by: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86, ptrace: support for branch trace store(BTS)Markus Metzger
Resend using different mail client Changes to the last version: - split implementation into two layers: ds/bts and ptrace - renamed TIF's - save/restore ds save area msr in __switch_to_xtra() - make block-stepping only look at BTF bit Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30UML: change sigcontext fields to match x86Jeff Dike
git-x86, in commit 70aa1bd3839e3ec74ce65316528a82570e8de666, changed a lot of the sigcontext field names. This patch changes UML usage to match. I also changed includes of generic headers from "" to <>. Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: put together equal pieces of system.hGlauber de Oliveira Costa
This patch puts together pieces of system_{32,64}.h that looks like the same. It's the first step towards integration of this file. 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>
2008-01-30x86: some whitespace cleanups in paging codeJoerg Roedel
This patch does some whitespace cleanups in the paging code to fix some checkpatch.pl warnings of my formerly merged cleanup patches. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: PIE executable randomization, uninliningAndrew Morton
Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Roland McGrath <roland@redhat.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>
2008-01-30x86: PIE executable randomization, checkpatch fixesAndrew Morton
#39: FILE: arch/ia64/ia32/binfmt_elf32.c:229: +elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type, unsigned long unused) WARNING: no space between function name and open parenthesis '(' #39: FILE: arch/ia64/ia32/binfmt_elf32.c:229: +elf32_map (struct file *filep, unsigned long addr, struct elf_phdr *eppnt, int prot, int type, unsigned long unused) WARNING: line over 80 characters #67: FILE: arch/x86/kernel/sys_x86_64.c:80: + new_begin = randomize_range(*begin, *begin + 0x02000000, 0); ERROR: use tabs not spaces #110: FILE: arch/x86/kernel/sys_x86_64.c:185: + ^I mm->cached_hole_size = 0;$ ERROR: use tabs not spaces #111: FILE: arch/x86/kernel/sys_x86_64.c:186: + ^I^Imm->free_area_cache = mm->mmap_base;$ ERROR: use tabs not spaces #112: FILE: arch/x86/kernel/sys_x86_64.c:187: + ^I}$ ERROR: use tabs not spaces #141: FILE: arch/x86/kernel/sys_x86_64.c:216: + ^I^I/* remember the largest hole we saw so far */$ ERROR: use tabs not spaces #142: FILE: arch/x86/kernel/sys_x86_64.c:217: + ^I^Iif (addr + mm->cached_hole_size < vma->vm_start)$ ERROR: use tabs not spaces #143: FILE: arch/x86/kernel/sys_x86_64.c:218: + ^I^I mm->cached_hole_size = vma->vm_start - addr;$ ERROR: use tabs not spaces #157: FILE: arch/x86/kernel/sys_x86_64.c:232: + ^Imm->free_area_cache = TASK_UNMAPPED_BASE;$ ERROR: need a space before the open parenthesis '(' #291: FILE: arch/x86/mm/mmap_64.c:101: + } else if(mmap_is_legacy()) { WARNING: braces {} are not necessary for single statement blocks #302: FILE: arch/x86/mm/mmap_64.c:112: + if (current->flags & PF_RANDOMIZE) { + mm->mmap_base += ((long)rnd) << PAGE_SHIFT; + } WARNING: line over 80 characters #314: FILE: fs/binfmt_elf.c:48: +static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); WARNING: no space between function name and open parenthesis '(' #314: FILE: fs/binfmt_elf.c:48: +static unsigned long elf_map (struct file *, unsigned long, struct elf_phdr *, int, int, unsigned long); WARNING: line over 80 characters #429: FILE: fs/binfmt_elf.c:438: + eppnt, elf_prot, elf_type, total_size); ERROR: need space after that ',' (ctx:VxV) #480: FILE: fs/binfmt_elf.c:939: + elf_prot, elf_flags,0); ^ total: 9 errors, 7 warnings, 461 lines checked Your patch has style problems, please review. If any of these errors are false positives report them to the maintainer, see CHECKPATCH in MAINTAINERS. Please run checkpatch prior to sending patches Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Roland McGrath <roland@redhat.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>
2008-01-30x86: PIE executable randomizationJiri Kosina
main executable of (specially compiled/linked -pie/-fpie) ET_DYN binaries onto a random address (in cases in which mmap() is allowed to perform a randomization). The code has been extraced from Ingo's exec-shield patch http://people.redhat.com/mingo/exec-shield/ [akpm@linux-foundation.org: fix used-uninitialsied warning] [kamezawa.hiroyu@jp.fujitsu.com: fixed ia32 ELF on x86_64 handling] Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: "Luck, Tony" <tony.luck@intel.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>
2008-01-30x86: introduce native_read_tscpGlauber de Oliveira Costa
Targetting paravirt, this patch introduces native_read_tscp, in place of rdtscp() macro. When in a paravirt guest, this will involve a function call, and thus, cannot be done in the vdso area. These users then have to call the native version directly 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>
2008-01-30x86: split get_cycles_syncGlauber de Oliveira Costa
This patch splits get_cycles_sync() into __get_cycles_sync(), and the rdtscll part. Paravirt guests cannot issue rdtscl directly, as it involves a function call in vdso area. So, using the __get_cycles_sync() base, we introduce vget_cycles_sync, which then calls the native version of rdtscll. Ideally, however, a guest should define its own clocksource, together with a vread function 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>
2008-01-30x86: allow sched clock to be overridden by paravirtGlauber de Oliveira Costa
This patch turns the sched_clock into native_sched_clock. sched clock becomes a weak symbol, which can then give its place to a paravirt definition. 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>
2008-01-30x86: wipe out traditional opt from x86_64 MakefileGlauber de Oliveira Costa
Among other things, using -traditional as a gcc option stops us from using macro token pasting, which is a feature we heavily rely on. There was still a use of -traditional in arch/x86/kernel/Makefile_64, which this patch removes. I don't see any problems building kernels in my x86_64 box without -traditional. Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: use def_bool where possible in Kconfig.cpuHarvey Harrison
x86: Use def_bool where possible in Kconfig.cpu Change occurances of: bool default X to: def_bool X 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>
2008-01-30x86: clean up process_32/64.cHiroshi Shimamoto
White space and coding style clean up. Make process_32/64.c similar. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: use def_bool where possibleHarvey Harrison
Change occurances of: bool default X to: def_bool X Change ocurances of: bool "Foo" default X to: def_bool X prompt "Foo" Shows no difference in generated config for allmodconfig/allyesconfig. 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>
2008-01-30x86: use __PAGE_KERNEL* instead of _KERNPG_TABLEJoerg Roedel
This minor cleanup replaces _KERNPG_TABLE with the __PAGE_KERNEL* for 2MB PTEs in the 64-bit memory initialization code. The __PAGE_KERNEL* defines are more appropriate for PTEs. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: 32-bit IOAPIC: de-fang IRQ compressionLen Brown
commit c434b7a6aedfe428ad17cd61b21b125a7b7a29ce (x86: avoid wasting IRQs for PCI devices) created a concept of "IRQ compression" on i386 to conserve IRQ numbers on systems with many sparsely populated IO APICs. The same scheme was also added to x86_64, but later removed when x86_64 recieved an IRQ over-haul that made it unnecessary -- including per-CPU IRQ vectors that greatly increased the IRQ capacity on the machine. i386 has not received the analogous over-haul, and thus a previous attempt to delete IRQ compression from i386 was rejected on the theory that there may exist machines that actually need it. The fact is that the author of IRQ compression patch was unable to confirm the actual existence of such a system. As a result, all i386 kernels with IOAPIC support pay the following: 1. confusion IRQ compression re-names the traditional IOAPIC pin numbers (aka ACPI GSI's) into sequential IRQ #s: ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 20 (level, low) -> IRQ 16 ACPI: PCI Interrupt 0000:00:1c.1[B] -> GSI 21 (level, low) -> IRQ 17 ACPI: PCI Interrupt 0000:00:1c.2[C] -> GSI 22 (level, low) -> IRQ 18 ACPI: PCI Interrupt 0000:00:1c.3[D] -> GSI 23 (level, low) -> IRQ 19 ACPI: PCI Interrupt 0000:00:1c.4[A] -> GSI 20 (level, low) -> IRQ 16 This makes /proc/interrupts look different depending on system configuration and device probe order. It is also different than the x86_64 kernel running on the exact same system. As a result, programmers get confused when comparing systems. 2. complexity The IRQ code in Linux is already overly complex, and IRQ compression makes it worse. There have already been two bug workarounds related to IRQ compression -- the IRQ0 timer workaround and the VIA PCI IRQ workaround. 3. size All i386 kernels with IOAPIC support contain an int[4096] -- a 4 page array to contain the renamed IRQs. So while the irq compression code on i386 should really be deleted -- even before merging the x86_64 irq-overhaul, this patch simply disables it on all high volume systems to avoid problems #1 and #2 on most all i386 systems. A large system with pin numbers >=64 will still have compression to conserve limited IRQ numbers for sparse IOAPICS. However, the vast majority of the planet, those with only pin numbers < 64 will use an identity GSI -> IRQ mapping. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
2008-01-30x86: use generic register name in the thread and tss structuresH. Peter Anvin
This changes size-specific register names (eip/rip, esp/rsp, etc.) to generic names in the thread and tss structures. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace merge removalsRoland McGrath
This removes the old separate 64-bit and ia32 ptrace source files. They are no longer used. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace merge completeRoland McGrath
This switches over the 64-bit build to use the shared ptrace code, instead of the old ptrace_64.c and arch/x86/ia32/ptrace32.c 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>
2008-01-30x86: x86 ia32 ptrace arch mergeRoland McGrath
This moves the sys32_ptrace code into arch/x86/kernel/ptrace.c, verbatim except for a few hard-coded sizes replaced with sizeof. Here this code can use the shared local functions in this file. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ia32 ptrace getreg/putreg mergeRoland McGrath
This reimplements the 64-bit IA32-emulation register access functions in arch/x86/kernel/ptrace.c, where they can share some guts with the native access functions directly. These functions are not used yet, but this paves the way to move IA32 ptrace support into this file to share its local functions. [akpm@linuxfoundation.org: Build fix] Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace merge syscall traceRoland McGrath
This moves the 64-bit syscall tracing functions into ptrace.c, so that ptrace_64.c becomes entirely obsolete. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace arch mergeRoland McGrath
This adds 64-bit support to arch_ptrace in arch/x86/kernel/ptrace.c, so this function can be used for native ptrace on both 32 and 64. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace getreg/putreg mergeRoland McGrath
This merges 64-bit support into the low-level register access functions in arch/x86/kernel/ptrace.c, paving the way to share this file between 32-bit and 64-bit builds. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86 ptrace getreg/putreg cleanupRoland McGrath
This cleans up the getreg/putreg functions to move the special cases (segment registers and eflags) out into their own subroutines. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: ptrace FLAG_MASK cleanupRoland McGrath
This cleans up the FLAG_MASK macro to use symbolic constants instead of a magic number. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: ptrace_32 renamedRoland McGrath
This renames ptrace_32.c back to ptrace.c, in preparation for merging the 32/64 versions of these files. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-32 thread_struct.debugregRoland McGrath
This replaces the debugreg[7] member of thread_struct with individual members debugreg0, etc. This saves two words for the dummies 4 and 5, and harmonizes the code between 32 and 64. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-64 ia32 ptrace get/putreg32 current taskRoland McGrath
This generalizes the getreg32 and putreg32 functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-32 ptrace get/putreg current taskRoland McGrath
This generalizes the getreg and putreg functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-64 ptrace get/putreg current taskRoland McGrath
This generalizes the getreg and putreg functions so they can be used on the current task, as well as on a task stopped in TASK_TRACED and switched off. This lays the groundwork to share this code for all kinds of user-mode machine state access, not just ptrace. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-32 ptrace whitespaceRoland McGrath
This canonicalizes the indentation in the getreg and putreg functions. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-64 ptrace whitespaceRoland McGrath
This canonicalizes the indentation in the getreg and putreg functions. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: x86-64 ia32 ptrace pt_regs cleanupRoland McGrath
This cleans up the getreg32/putreg32 functions to use struct pt_regs in a straightforward fashion, instead of equivalent ugly pointer arithmetic. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: setup64 eflags constantsRoland McGrath
This cleans up arch/x86/kernel/setup64.c to use the X86_EFLAGS_* constants from <asm/processor-flags.h> instead of the EF_* enum in <asm/ptrace.h>. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: use generic register names in struct sigcontextH. Peter Anvin
Switch struct sigcontext (defined in <asm/sigcontext*.h>) to using register names withut e- or r-prefixes for both 32- and 64-bit x86. This is intended as a preliminary step in unifying this code between architectures. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: use generic register names in struct user_regs_structH. Peter Anvin
Switch struct user_regs_struct (defined in <asm/user.h>, which is no longer exported to userspace) to using register names without e- or r-prefixes for both 32 and 64 bit x86. This is intended as a preliminary step in unifying this code between architectures. Also, be a bit more strict in truncating 32-bit "extended" segment register values to 16 bits. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: rename the struct pt_regs members for 32/64-bit consistencyH. Peter Anvin
We have a lot of code which differs only by the naming of specific members of structures that contain registers. In order to enable additional unifications, this patch drops the e- or r- size prefix from the register names in struct pt_regs, and drops the x- prefixes for segment registers on the 32-bit side. This patch also performs the equivalent renames in some additional places that might be candidates for unification in the future. Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: add set/clear_cpu_cap operationsJeremy Fitzhardinge
The patch to suppress bitops-related warnings added a pile of ugly casts. Many of these were related to the management of x86 CPU capabilities. Clean these up by adding specific set/clear_cpu_cap macros, and use them consistently. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: clean up bitops-related warningsJeremy Fitzhardinge
Add casts to appropriate places to silence spurious bitops warnings. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: prevent dereferencing non-allocated per_cpu variablesMike Travis
'for_each_possible_cpu(i)' when there's a _remote possibility_ of dereferencing a non-allocated per_cpu variable involved. All files except mm/vmstat.c are x86 arch. Thanks to pageexec@freemail.hu for pointing this out. Signed-off-by: Mike Travis <travis@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: <pageexec@freemail.hu> 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>
2008-01-30x86: PTRACE_SINGLEBLOCKRoland McGrath
This adds the PTRACE_SINGLEBLOCK request on x86, matching the ia64 feature. The implementation comes from the generic ptrace code and relies on the low-level machine support provided by arch_has_block_step() et al. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-01-30x86: debugctlmsr kprobesRoland McGrath
This adjusts the x86 kprobes implementation to cope with per-thread MSR_IA32_DEBUGCTLMSR being set for user mode. I haven't delved deep enough into the kprobes code to be really sure this covers all the cases where the user-mode BTF setting needs to be cleared or restored. It looks about right to me. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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