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* x86: fix ioapic bug againIngo Molnar2008-04-17
| | | | | | | | | | | | | | | | un-revert: commit 4960c9df1407c2723459c60ff13e6efe0c209c62 Author: Thomas Gleixner <tglx@linutronix.de> Date: Tue Jan 22 10:23:01 2008 +0100 Revert "x86: fix NMI watchdog & 'stopped time' problem" This reverts commit d4d25deca49ec2527a634557bf5a6cf449f85deb. needs a proper fix though ... Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: pat cpu feature bit setting for known cpusYinghai Lu2008-04-17
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: tom2 warning fixIngo Molnar2008-04-17
| | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: enable PAT for amd k8 and fam10hYinghai Lu2008-04-17
| | | | | | | | | make known_pat_cpu to think amd k8 and fam10h is ok too. also make tom2 below to be WRBACK Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: PAT infrastructure patchvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sets up pat_init() infrastructure. PAT MSR has following setting. PAT |PCD ||PWT ||| 000 WB _PAGE_CACHE_WB 001 WC _PAGE_CACHE_WC 010 UC- _PAGE_CACHE_UC_MINUS 011 UC _PAGE_CACHE_UC We are effectively changing WT from boot time setting to WC. UC_MINUS is used to provide backward compatibility to existing /dev/mem users(X). reserve_memtype and free_memtype are new interfaces for maintaining alias-free mapping. It is currently implemented in a simple way with a linked list and not optimized. reserve and free tracks the effective memory type, as a result of PAT and MTRR setting rather than what is actually requested in PAT. pat_init piggy backs on mtrr_init as the rules for setting both pat and mtrr are same. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: clean up aperture_64.cPavel Machek2008-04-17
| | | | | | | | Initializing to zero is generally bad idea, I hope it is right for __init data, too. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: allocate e820 resource struct all togetherYinghai Lu2008-04-17
| | | | | | | don't need to allocate that one by one Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: early memtest to find bad ramYinghai Lu2008-04-17
| | | | | | | | | | | | | do simple memtest after init_memory_mapping use find_e820_area_size to find all ram range that is not reserved. and do some simple bits test to find some bad ram. if find some bad ram, use reserve_early to exclude that range. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: Explicitly include required header files.Robert P. J. Day2008-04-17
| | | | | | | | After an experimental cleanup of <linux/percpu.h>, these files were exposed as invoking kmalloc() without including <linux/slab.h>. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86, kprobes: correct post-eip value in post_hander()Yakov Lerner2008-04-17
| | | | | | | | | | | | | | | | | | | | | I was trying to get the address of instruction to be executed next after the kprobed instruction. But regs->eip in post_handler() contains value which is useless to the user. It's pre-corrected value. This value is difficult to use without access to resume_execution(), which is not exported anyway. I moved the invocation of post_handler() to *after* resume_execution(). Now regs->eip contains meaningful value in post_handler(). I do not think this change breaks any backward-compatibility. To make meaning of the old value, post_handler() would need access to resume_execution() which is not exported. I have difficulty to believe that previous, uncorrected, regs->eip can be meaningfully used in post_handler(). Signed-off-by: Yakov Lerner <iler.ml@gmail.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: handle_vm86_trap cleanupRoland McGrath2008-04-17
| | | | | | | Use force_sig in handle_vm86_trap like other machine traps do. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: ptrace vs -ENOSYSRoland McGrath2008-04-17
| | | | | | | | | | | | | | | When we're stopped at syscall entry tracing, ptrace can change the %rax value from -ENOSYS to something else. If no system call is actually made because the syscall number (now in orig_rax) is bad, then we now always reset %rax to -ENOSYS again. This changes it to leave the return value alone after entry tracing. That way, the %rax value set by ptrace is there to be seen in user mode (or in syscall exit tracing). This is consistent with what the 32-bit kernel does. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove the write-only timer_uses_ioapic_pin_0Adrian Bunk2008-04-17
| | | | | | | | | | This patch removes the write-only timer_uses_ioapic_pin_0 (gsi can't be <= 15 in the line of it's fake usage in mpparse_32.c). Spotted by the GNU C compiler. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: vsmp fix x86 vsmp fix is vsmp box cleanupIngo Molnar2008-04-17
| | | | | | | | | | | | code got a bit smaller: arch/x86/kernel/vsmp_64.o: text data bss dec hex filename 205 4 0 209 d1 vsmp_64.o.before 181 4 0 185 b9 vsmp_64.o.after Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: apic_is_clustered_box to indicate unsynched TSC's on multiboard vSMP ↵Ravikiran G Thirumalai2008-04-17
| | | | | | | | | | systems Indicate TSCs are unreliable as time sources if the platform is a multi chassi ScaleMP vSMPowered machine. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: vSMP: use pvops only if platform has the capability to support itRavikiran G Thirumalai2008-04-17
| | | | | | | | Re-arrange set_vsmp_pv_ops so that pv_ops are set only if the platform has capability to support paravirtualized irq ops Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix build breakage when PCI is define and PARAVIRT is notRavikiran G Thirumalai2008-04-17
| | | | | | | | | | | | | | | - Fix the the build breakage when PARAVIRT is defined but PCI is not This fixes problem reported at: http://marc.info/?l=linux-kernel&m=120525966600698&w=2 - Make is_vsmp_box() available even when PARAVIRT is not defined. This is needed to determine if tsc's are reliable as a time source even when PARAVIRT is not defined. - split vsmp_init to use is_vsmp_box() and set_vsmp_pv_ops() set_vsmp_pv_ops will do nothing if PCI is not enabled in the config. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: vSMP: Fix is_vsmp_box()Ravikiran G Thirumalai2008-04-17
| | | | | | | | is_vsmp_box() currently does not work on vSMPowered systems, as pci cfg space is not read correctly -- This patch fixes it. Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make struct mpc_config_translation NUMAQ-onlyAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove mpc_oem_bus_info()Alexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove mpc_oem_pci_bus()Alexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove mpc_apic_id()Alexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: rename gsi_start to gsi_base to match mpparse_32.cAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: limit scan to 1k of EBDA.Alexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use get_bios_ebda in mpparse_64.cAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add uniq_ioapic_id to mpparse_32.cAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add bad_ioapic to mpparse_32.cAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: lindent mpparse_64.cAlexey Starikovskiy2008-04-17
| | | | | Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove smpboot_32.c and smpboot_64.cGlauber de Oliveira Costa2008-04-17
| | | | | | | | | | | Remove the last leftovers from the files. Move the ones that are still used to the files they belong, the others that grep can't reach, simply throw away. Merge comments ontop of file and that's it: smpboot integrated Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move apicid mappings to smpboot.cGlauber de Oliveira Costa2008-04-17
| | | | | | | | | They are i386 specific (the x86_64 definitions live elsewhere, and should remain there), so are enclosed around an ifdef Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge cpu_exit_clearGlauber de Oliveira Costa2008-04-17
| | | | | | | | | this is the last remaining function in smpboot_32.c Since it is i386 specific, move it around an ifdef to smpboot.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge native_smp_prepare_cpusGlauber de Oliveira Costa2008-04-17
| | | | | | | | | With the previous changes, code for native_smp_prepare_cpus() in i386 and x86_64 now look very similar. merge them into smpboot.c. Minor differences are inside ifdef Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: introduce smpboot_clear_io_apicGlauber de Oliveira Costa2008-04-17
| | | | | | | | | x86_64 has two nr_ioapics = 0 statements. In 32-bit, it can be done too. We do it through the smpboot_clear_io_apic() inline function, to cope with subarchitectures (visws) that does not compile mpparse in Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change x86_64 sanity checks to match i386.Glauber de Oliveira Costa2008-04-17
| | | | | | | | | | They are mostly inocuous. APIC_INTEGRATED will expand to 1, check_phys_apicid_present is checking for the same thing it was before, etc. But the code is identical to i386 now, and will allow us to integrate it. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add extra sanity checkGlauber de Oliveira Costa2008-04-17
| | | | | | | This test exists in x86_64 and also applies to i386. So we add it Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change x86_64 native_smp_prepare_cpus to match i386Glauber de Oliveira Costa2008-04-17
| | | | | | | | | An APIC test is moved, and code is replaced by the mach-default already defined function (smpboot_setup_io_apic). setup_portio_remap() is added, but it is a nop in mach-default. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: additions to i386 native_smp_prepare_cpus.Glauber de Oliveira Costa2008-04-17
| | | | | | | | Add function calls to native_smp_prepare_cpus in i386 to match x86_64 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: get rid of smp_boot_cpusGlauber de Oliveira Costa2008-04-17
| | | | | | | | | This patch get rid of smp_boot_cpus(), since it does not boot any cpu anymore. Its code is split in a way to make it closer to x86_64 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use physical id when disabling smpGlauber de Oliveira Costa2008-04-17
| | | | | | | | if smp configuration is not found at all, hook into 0. This is done to match x86_64 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge native_smp_cpus_doneGlauber de Oliveira Costa2008-04-17
| | | | | | | | They look similar enough, and are merged. Only difference (zap_low_mapping for i386) is inside ifdef Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge smp_prepare_boot_cpuGlauber de Oliveira Costa2008-04-17
| | | | | | | | | it is practically the same between arches now, so it is moved to smpboot.c. Minor differences (gdt initialization) live inside an ifdef Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: integrate start_secondaryGlauber de Oliveira Costa2008-04-17
| | | | | | | | | It now looks the same between architectures, so we merge it in smpboot.c. Minor differences goes inside an ifdef Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: integrate do_boot_cpuGlauber de Oliveira Costa2008-04-17
| | | | | | | | | | This is a very large patch, because it depends on a lot of auxiliary static functions. But they all have been modified to the point that they're sufficiently close now. So they're just merged in smpboot.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change boot_cpu_id to boot_cpu_physical_apicidGlauber de Oliveira Costa2008-04-17
| | | | | | | | | This is to match i386. The former name was cuter, but the current is more meaningful and more general, since cpu_id can be a logical id. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move stack_start to smp.hGlauber de Oliveira Costa2008-04-17
| | | | | | | | | voyager would conflict with it, but the types are ultimately compatible. So remove the extern definition from voyager_smp.c in favour of the common one Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move {un}map_cpu_to_logical_apicid to smpboot.cGlauber de Oliveira Costa2008-04-17
| | | | | | | | | Move map_cpu_to_logical_apicid() and unmap_cpu_to_logical_apicid() to smpboot.c. They take together all the bunch of static functions they rely upon Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add callin tests to cpu_upGlauber de Oliveira Costa2008-04-17
| | | | | | | | Now that we boot cpus here, callin_map has this meaning (same as x86_64) Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change wakeup_secondary nameGlauber de Oliveira Costa2008-04-17
| | | | | | | | | wakeup_secondary_via_INIT => wakeup_secondary_cpu. This is to match i386, where init is not always used. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: include mach_apic.h in smpboot_64.c and smpboot.cGlauber de Oliveira Costa2008-04-17
| | | | | | | | | | | After the inclusion, a lot of files needs fixing for conflicts, some of them in the headers themselves, to accomodate for both i386 and x86_64 versions. [ mingo@elte.hu: build fix ] Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: call do_boot_cpu directly from native_cpu_upGlauber de Oliveira Costa2008-04-17
| | | | | | | We don't need __smp_prepare_cpu anymore. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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