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* x86: remove all definitions with fastcallHarvey Harrison2008-01-30
| | | | | | | | fastcall is always defined to be empty, remove it from arch/x86 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 _set_gate and its users to a common locationGlauber de Oliveira Costa2008-01-30
| | | | | | | | | | | This patch moves _set_gate and its users to desc.h. We can now use common code for x86_64 and i386. [ mingo@elte.hu: set_system_gate() fixes for nasty crashes. ] 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: introduce gate_desc type.Glauber de Oliveira Costa2008-01-30
| | | | | | | | | To account for the differences in gate descriptor in i386 and x86_64 a gate_desc type is introduced. 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 desc_structGlauber de Oliveira Costa2008-01-30
| | | | | | | | | | | | | | | | | | This patch aims to make the access of struct desc_struct variables equal across architectures. In this patch, I unify the i386 and x86_64 versions under an anonymous union, keeping the way they are accessed untouched (a and b for 32-bit code, individual bit-fields for 64-bit). This solution is not beautiful, but will allow us to integrate common code that differed by the way descriptors were used. This is to be viewed incrementally. There's simply too much code to be fixed at once. In the future, goal is to set up in a single way of acessing the desc_struct fields. 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: use generic register name in the thread and tss structuresH. Peter Anvin2008-01-30
| | | | | | | | | 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>
* x86: x86-32 thread_struct.debugregRoland McGrath2008-01-30
| | | | | | | | | | 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>
* x86: rename the struct pt_regs members for 32/64-bit consistencyH. Peter Anvin2008-01-30
| | | | | | | | | | | | | | | 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>
* x86: debugctlmsr arch_has_block_stepRoland McGrath2008-01-30
| | | | | | | | | This implements user-mode step-until-branch on x86 using the BTF bit in MSR_IA32_DEBUGCTLMSR. It's just like single-step, only less so. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* lockdep: more hardirq annotations for notify_die()Peter Zijlstra2008-01-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sat, 2007-12-29 at 18:06 +0100, Marcin Slusarz wrote: > Hi > Today I've got this (while i was upgrading my gentoo box): > > WARNING: at kernel/lockdep.c:2658 check_flags() > Pid: 21680, comm: conftest Not tainted 2.6.24-rc6 #63 > > Call Trace: > [<ffffffff80253457>] check_flags+0x1c7/0x1d0 > [<ffffffff80257217>] lock_acquire+0x57/0xc0 > [<ffffffff8024d5c0>] __atomic_notifier_call_chain+0x60/0xd0 > [<ffffffff8024d641>] atomic_notifier_call_chain+0x11/0x20 > [<ffffffff8024d67e>] notify_die+0x2e/0x30 > [<ffffffff8020da0a>] do_divide_error+0x5a/0xa0 > [<ffffffff80522bdd>] trace_hardirqs_on_thunk+0x35/0x3a > [<ffffffff80255b89>] trace_hardirqs_on+0xd9/0x180 > [<ffffffff80522bdd>] trace_hardirqs_on_thunk+0x35/0x3a > [<ffffffff80523c2d>] error_exit+0x0/0xa9 > > possible reason: unannotated irqs-off. > irq event stamp: 4693 > hardirqs last enabled at (4693): [<ffffffff80522bdd>] trace_hardirqs_on_thunk+0x35/0x3a > hardirqs last disabled at (4692): [<ffffffff80522c17>] trace_hardirqs_off_thunk+0x35/0x37 > softirqs last enabled at (3546): [<ffffffff80238343>] __do_softirq+0xb3/0xd0 > softirqs last disabled at (3521): [<ffffffff8020c97c>] call_softirq+0x1c/0x30 more early fixups for notify_die().. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix die() to not be preemptibleIngo Molnar2007-12-20
| | | | | | | | | | | | | | | | | | | | | | | | | Andrew "Eagle Eye" Morton noticed that we use raw_local_save_flags() instead of raw_local_irq_save(flags) in die(). This allows the preemption of oopsing contexts - which is highly undesirable. It also causes CONFIG_DEBUG_PREEMPT to complain, as reported by Miles Lane. this bug was introduced via: commit 39743c9ef717fd4f2b5583f010115c5f2482b8ae Author: Andi Kleen <ak@suse.de> Date: Fri Oct 19 20:35:03 2007 +0200 x86: use raw locks during oopses - spin_lock_irqsave(&die.lock, flags); + __raw_spin_lock(&die.lock); + raw_local_save_flags(flags); that is not a correct open-coding of spin_lock_irqsave(): both the ordering is wrong (irqs should be disabled _first_), and the wrong flags-saving API was used. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* lockdep: annotate do_debug() trap handlerPeter Zijlstra2007-11-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ensure the hardirq state is consistent before using locks. Use the rare trace_hardirqs_fixup() because the trap can happen in any context. resolves this rare lockdep warning: WARNING: at kernel/lockdep.c:2658 check_flags() [<c013571e>] check_flags+0x90/0x140 [<c0138a69>] lock_release+0x4b/0x1d0 [<c0507fea>] notifier_call_chain+0x2a/0x47 [<c050806b>] __atomic_notifier_call_chain+0x64/0x6d [<c0508007>] __atomic_notifier_call_chain+0x0/0x6d [<c050808b>] atomic_notifier_call_chain+0x17/0x1a [<c0131802>] notify_die+0x30/0x34 [<c0506b09>] do_debug+0x3e/0xd4 [<c050658f>] debug_stack_correct+0x27/0x2c [<c04be389>] tcp_rcv_established+0x1/0x620 [<c04c38c2>] tcp_v4_do_rcv+0x2b/0x313 [<c04c56b6>] tcp_v4_rcv+0x467/0x85d [<c0505ff2>] _spin_lock_nested+0x27/0x32 [<c04c5a4d>] tcp_v4_rcv+0x7fe/0x85d [<c04c560e>] tcp_v4_rcv+0x3bf/0x85d [<c04adbb5>] ip_local_deliver_finish+0x11b/0x1b0 [<c04adac8>] ip_local_deliver_finish+0x2e/0x1b0 [<c04ada7b>] ip_rcv_finish+0x27b/0x29a [<c04961e5>] netif_receive_skb+0xfb/0x2a6 [<c04add0f>] ip_rcv+0x0/0x1fb [<c0496354>] netif_receive_skb+0x26a/0x2a6 [<c04961e5>] netif_receive_skb+0xfb/0x2a6 [<c049872e>] process_backlog+0x7f/0xc6 [<c04983ba>] net_rx_action+0xb9/0x1ac [<c0498348>] net_rx_action+0x47/0x1ac [<c01376cb>] trace_hardirqs_on+0x118/0x16b [<c01225e2>] __do_softirq+0x49/0xa2 [<c010595f>] do_softirq+0x60/0xdd [<c0506300>] _spin_unlock_irq+0x20/0x2c [<c0103e4f>] restore_nocheck+0x12/0x15 [<c01440e1>] handle_fasteoi_irq+0x0/0x9b [<c0105a70>] do_IRQ+0x94/0xaa [<c0506300>] _spin_unlock_irq+0x20/0x2c [<c0104832>] common_interrupt+0x2e/0x34 [<c0114703>] native_safe_halt+0x2/0x3 [<c0102c01>] default_idle+0x44/0x65 [<c010257f>] cpu_idle+0x42/0x50 [<c076ea09>] start_kernel+0x26b/0x270 [<c076e317>] unknown_bootoption+0x0/0x196 ======================= irq event stamp: 559190 hardirqs last enabled at (559190): [<c0507316>] kprobe_exceptions_notify+0x299/0x305 hardirqs last disabled at (559189): [<c05067bf>] do_int3+0x1d/0x95 softirqs last enabled at (559172): [<c010595f>] do_softirq+0x60/0xdd softirqs last disabled at (559181): [<c010595f>] do_softirq+0x60/0xdd Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: printk kernel version in WARN_ON and other dump_stack usersArjan van de Ven2007-11-26
| | | | | | | | | | | | | | | | | | | | | | | today, all oopses contain a version number of the kernel, which is nice because the people who actually do bother to read the oops get this vital bit of information always without having to ask the reporter in another round trip. However, WARN_ON() and many other dump_stack() users right now lack this information; the patch below adds this. This information is essential for getting people to use their time effectively when looking at these things; in addition, it's essential for tools that try to collect statistics about defects. Please consider, since its so simple and important for long term kernel quality processes. The code is identical between 32/64 bit; a lot of this code should be unified over time, the patch keeps the identical-ness intact. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* lockdep: fixup irq tracingPeter Zijlstra2007-10-25
| | | | | | | Ensure we fixup the IRQ state before we hit any locking code. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86Linus Torvalds2007-10-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86: (33 commits) x86: convert cpuinfo_x86 array to a per_cpu array x86: introduce frame_pointer() and stack_pointer() x86 & generic: change to __builtin_prefetch() i386: do not BUG_ON() when MSR is unknown x86: acpi use cpu_physical_id x86: convert cpu_llc_id to be a per cpu variable x86: convert cpu_to_apicid to be a per cpu variable i386: introduce "used_vectors" bitmap which can be used to reserve vectors. x86: use raw locks during oopses x86: honor _PAGE_PSE bit on page walks i386: do cpuid_device_create() in CPU_UP_PREPARE instead of CPU_ONLINE. x86: implement missing x86_64 function smp_call_function_mask() x86: use descriptor's functions instead of inline assembly i386: consolidate show_regs and show_registers for i386 i386: make callgraph use dump_trace() on i386/x86_64 x86: enable iommu_merge by default i386: i386 add AMD64 Barcelona PMU MSR definitions to msr.h x86: Unify i386 and x86-64 early quirks x86: enable HPET on ICH3 and ICH4 x86: force enable HPET on VT8235/8237 chipsets ... Manually fix trivial conflict with task pid container helper changes in arch/x86/kernel/process_32.c
| * i386: introduce "used_vectors" bitmap which can be used to reserve vectors.Rusty Russell2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | This simplifies the io_apic.c __assign_irq_vector() logic and removes the explicit SYSCALL_VECTOR check, and also allows for vectors to be reserved by other mechanisms (ie. lguest). [ tglx: arch/x86 adaptation ] Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * x86: use raw locks during oopsesAndi Kleen2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | Don't want any lockdep or other fragile machinery to run during oopses. Use raw spinlocks directly for oops locking. Also disables irq flag tracing there. [ tglx: arch/x86 adaptation ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * i386: consolidate show_regs and show_registers for i386Pavel Emelyanov2007-10-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Both functions printk the same information, except for CRx and debug registers in the show_registers() one and a bit different manner. So move the common code into one place. This is already done for x86_64, so I think it's worth having the same on i386. This saves 100 bytes of .rodata section :) ... but only 8 from .text :( [ tglx: arch/x86 adaptation ] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | Use helpers to obtain task pid in printks (arch code)Alexey Dobriyan2007-10-19
|/ | | | | | | | | | | | | | | One of the easiest things to isolate is the pid printed in kernel log. There was a patch, that made this for arch-independent code, this one makes so for arch/xxx files. It took some time to cross-compile it, but hopefully these are all the printks in arch code. Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: clean up oops/bug reportsPavel Emelyanov2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Typically the oops first lines look like this: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c049dfbd *pde = 00000000 Oops: 0002 [#1] PREEMPT SMP ... Such output is gained with some ugly if (!nl) printk("\n"); code and besides being a waste of lines, this is also annoying to read. The following output looks better (and it is how it looks on x86_64): BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c049dfbd *pde = 00000000 Oops: 0002 [#1] PREEMPT SMP ... [ tglx: arch/x86 adaptation ] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* x86: constify stacktrace_opsJan Beulich2007-10-17
| | | | | | | | | | | .. as they're never written to. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* i386: fix section mismatch warning in intel.cSam Ravnborg2007-10-17
| | | | | | | | | | | | | | | | | | | | | | Fix following section mismatch warning: WARNING: vmlinux.o(.text+0xc88c): Section mismatch: reference to .init.text:trap_init_f00f_bug (between 'init_intel' and 'cpuid4_cache_lookup') init_intel are __cpuint where trap_init_f00f_bug is __init. Fixed by declaring trap_init_f00f_bug __cpuinit. Moved the defintion of trap_init_f00f_bug to the sole user in init.c so the ugly prototype in intel.c could get killed. Frank van Maarseveen <frankvm@frankvm.com> supplied the .config used to reproduce the warning. [ tglx: arch/x86 adaptation ] Cc: Frank van Maarseveen <frankvm@frankvm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* Delete filenames in comments.Dave Jones2007-10-13
| | | | | | | | | | | | | | | Since the x86 merge, lots of files that referenced their own filenames are no longer correct. Rather than keep them up to date, just delete them, as they add no real value. Additionally: - fix up comment formatting in scx200_32.c - Remove a credit from myself in setup_64.c from a time when we had no SCM - remove longwinded history from tsc_32.c which can be figured out from git. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* i386: move kernelThomas Gleixner2007-10-11
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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