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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>
* i386: arch/x86/math-emu/reg_ld_str.c: fix warningAndrew Morton2008-04-17
| | | | | | | | | | | | arch/x86/math-emu/reg_ld_str.c:380: warning: 'l[0]' may be used uninitialized in this function arch/x86/math-emu/reg_ld_str.c:380: warning: 'l[1]' may be used uninitialized in this function I can't actually spot the bug here. There's one obvious place, but fixing that didn't shut the warning up. Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* i386: arch/x86/math-emu/fpu_entry.c warning fixAndrew Morton2008-04-17
| | | | | | | | | | | arch/x86/math-emu/fpu_entry.c:555: warning: 'entry_sel_off.empty' is used uninitialized in this function Presumably it's harmless, but I'll sleep better at night knowing that we initialised it. Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: PAT bug fix for attribute type check after reserve_memtype, debugVenki Pallipadi2008-04-17
| | | | | | | Make the PAT related printks in ioremap pr_debug. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: PAT bug fix for attribute type check after reserve_memtypeVenki Pallipadi2008-04-17
| | | | | | | | | | | | Bug fixes for reserve_memtype() call in __ioremap and pci_mmap_page_range(). If reserve_memtype returns non-zero, then it is an error and subsequent free is not required. Requested and returned prot value check should be done when reserve_memtype returns success. 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: 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 fixIngo Molnar2008-04-17
| | | | | | build fix for !CONFIG_MTRR. Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: PAT infrastructure patch, documentation updatesVenki Pallipadi2008-04-17
| | | | | | | | Fix double help section in PAT Kconfig. Thanks to Randy Dunlap for catching this bug. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add PAT related debug printsvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | Adds debug prints at critical code. Adds enough info in dmesg to allow us to do effective first round of analysis of any issues that may result due to PAT patch series. 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: PAT add ioremap_wc() interfacevenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | Introduce ioremap_wc for wc remap. (generic wrapper is in a later patch) 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: PAT add set_memory_wc() interfacevenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | Add a set_memory_wc interface(), similar to set_memory_uc interface. Callers has to call set_memory_uc, set_memory_wb and set_memory_wc, set_memory_wb as pairs. 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: PAT use reserve free memtype in pci_mmap_page_rangevenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | | | Add reserve_memtype and free_memtype wrapper for pci_mmap_page_range. Free is called on unmap, but identity map continues to be mapped as per pci_mmap_page_range request, until next request for the same region calls ioremap_change_attr(), which will go through without conflict. This way of mapping is identical to one used in ioremap/iounmap. 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: PAT use reserve free memtype in set_memory_ucvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | | | Use reserve_memtype and free_memtype interfaces in set_memory_uc/set_memory_wb interfaces to avoid aliasing. Usage model of set_memory_uc and set_memory_wb is for RAM memory and users will first call set_memory_uc and call set_memory_wb after use to reset the attribute. 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: PAT use reserve free memtype in ioremap and iounmapvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | | | | | Use reserve_memtype and free_memtype interfaces in ioremap/iounmap to avoid aliasing. If there is an existing alias for the region, inherit the memory type from the alias. If there are conflicting aliases for the entire region, then fail ioremap. 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: PAT make ioremap_change_attr non-staticvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | Make ioremap_change_attr() non-static and use prot_val in place of ioremap_mode. This interface is used in subsequent PAT patches. 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: revert ucminus changeIngo Molnar2008-04-17
| | | | 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: PAT documentationvenkatesh.pallipadi@intel.com2008-04-17
| | | | | | | | | Documentation about PAT related interfaces, intended usage and memory attribute relationship. 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: processor.h - use PAGE_SIZE instead of numeric valueCyrill Gorcunov2008-04-17
| | | | | | | | | | This patch replaces numeric constant with an appropriate macro Also 0x800000000000UL is changed to bit shifting which is complement to the code comment (thanks hpa for notice) Signed-off-by: Cyrill Gorcunov <gorcunov@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: simplify sync_test_bit()Jan Beulich2008-04-17
| | | | | | | | There really is no need for a redundant implementation here, just keep the alternative name for allowing consumers to use consistent naming. Signed-off-by: Jan Beulich <jbeulich@novell.com> 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: sys32_execve PT_DTRACERoland McGrath2008-04-17
| | | | | | | | The PT_DTRACE flag is meaningless and obsolete. Don't touch it. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: ia32 ptrace vs -ENOSYS sysenter/syscallRoland McGrath2008-04-17
| | | | | | | | | The previous "x86_64 ia32 ptrace vs -ENOSYS" fix only covered the int $0x80 system call entries. This does the same fix for the sysenter and syscall instruction paths. 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: ia32 ptrace vs -ENOSYSRoland McGrath2008-04-17
| | | | | | | | | | | | | When we're stopped at syscall entry tracing, ptrace can change the %eax value from -ENOSYS to something else. If no system call is actually made because the syscall number (now in orig_eax) is bad, then the %eax value set by ptrace should be returned to the user. But, instead it gets reset to -ENOSYS again. This is a regression from the native 32-bit kernel. This change fixes it by leaving the return value alone after entry tracing. 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>
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