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* x86: enhance DEBUG_RODATA support - alternativesMathieu Desnoyers2008-04-171-23/+65
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix a memcpy that should be a text_poke (in apply_alternatives). Use kernel_wp_save/kernel_wp_restore in text_poke to support DEBUG_RODATA correctly and so the CPU HOTPLUG special case can be removed. Add text_poke_early, for alternatives and paravirt boot-time and module load time patching. Changelog: - Fix text_set and text_poke alignment check (mixed up bitwise and and or) - Remove text_set - Export add_nops, so it can be used by others. - Document text_poke_early. - Remove clflush, since it breaks some VIA architectures and is not strictly necessary. - Add kerneldoc to text_poke and text_poke_early. - Create a second vmap instead of using the WP bit to support Xen and VMI. - Move local_irq disable within text_poke and text_poke_early to be able to be sleepable in these functions. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Andi Kleen <andi@firstfloor.org> CC: pageexec@freemail.hu CC: H. Peter Anvin <hpa@zytor.com> CC: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: replace remaining __FUNCTION__ occurancesHarvey Harrison2008-04-175-17/+17
| | | | | | | __FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: show apicid for cpu in procYinghai Lu2008-04-171-0/+1
| | | | | Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: fix amd_detect_cmpYinghai Lu2008-04-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | for system with apicid lifting, boot cpu apicid will be 4 got: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 512K (64 bytes/line) CPU 0/4 -> Node 0 CPU: Physical Processor ID: 1 CPU: Processor Core ID: 0 so try to offset apicid back before get phys_proc_id with bits shift. then we can get correct socket ID also remove remove cpu_data(0) reference. because cpu_data(0) only be ready after smp_prepare_cpus with the assignment from boot_cpu_data to current_cpu_data aka cpu_data(0). and check_bugs()==>identify_cpu(&boot_cpu_data) is quite before than smp_prepare_cpus. So just use boot_cpu_id instead. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add KERN_INFO to show_unhandled_signals printoutIngo Molnar2008-04-171-3/+3
| | | | | | | | | | | | | | | | | | | | | Before: total: 0 errors, 1 warnings, 678 lines checked After: total: 0 errors, 0 warnings, 678 lines checked No code changed: arch/x86/kernel/signal_32.o: text data bss dec hex filename 5333 0 4 5337 14d9 signal_32.o.before 5336 0 4 5340 14dc signal_32.o.after md5: c279e98012a2808e90cfa2a7787e42a4 signal_32.o.before.asm c279e98012a2808e90cfa2a7787e42a4 signal_32.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move extern declaration to vdso.hIngo Molnar2008-04-171-7/+0
| | | | | | | | | | | | | | | | | | | | | Before: total: 0 errors, 3 warnings, 685 lines checked After: total: 0 errors, 1 warnings, 678 lines checked No code changed: arch/x86/kernel/signal_32.o: text data bss dec hex filename 5333 0 4 5337 14d9 signal_32.o.before 5333 0 4 5337 14d9 signal_32.o.after md5: c279e98012a2808e90cfa2a7787e42a4 signal_32.o.before.asm c279e98012a2808e90cfa2a7787e42a4 signal_32.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: clean up arch/x86/kernel/signal_32.cIngo Molnar2008-04-171-79/+101
| | | | | | | | | | | | | | | | | | | | | Before: total: 21 errors, 6 warnings, 665 lines checked After: total: 0 errors, 3 warnings, 685 lines checked No code changed: arch/x86/kernel/signal_32.o: text data bss dec hex filename 5333 0 4 5337 14d9 signal_32.o.before 5333 0 4 5337 14d9 signal_32.o.after md5: c279e98012a2808e90cfa2a7787e42a4 signal_32.o.before.asm c279e98012a2808e90cfa2a7787e42a4 signal_32.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove DEBUG_SIGIngo Molnar2008-04-172-37/+0
| | | | Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: arch/x86/kernel/cpu/feature_names.c - use angle brackets for includeJoe Perches2008-04-171-1/+1
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: clean up i387.cIngo Molnar2008-04-171-42/+46
| | | | | | | | | | | | | | | | | | | | | | | minor coding style cleanups. Before: total: 0 errors, 3 warnings, 479 lines checked After: total: 0 errors, 1 warnings, 483 lines checked No code changed: arch/x86/kernel/i387.o: text data bss dec hex filename 2379 4 8 2391 957 i387.o.before 2379 4 8 2391 957 i387.o.after md5: e1434553a3b4ff1f52ad97a68b1fad8a i387.o.before.asm e1434553a3b4ff1f52ad97a68b1fad8a i387.o.after.asm Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use cpu_relax instead of rep_nopGlauber Costa2008-04-171-2/+2
| | | | | | | This is done for smpboot_32.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use wait_for_init_deassert in x86_64Glauber Costa2008-04-171-2/+8
| | | | | | | | wraps the busy loop for wait_for_init_deasserted() in a function, so smp_callin in x86_64 looks like more i386 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify setup_trampolineGlauber Costa2008-04-173-43/+33
| | | | | | | | | | | | setup_trampoline() looks very similar between architectures, and this patch unifies them. The i386 version allocates bootmem memory, while the x86_64 version uses a fixed address. In this patch, we initialize the global trampoline_base to the x86_64 version, and i386 allocation can later override it. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: adapt voyager's setup_trampolineGlauber Costa2008-04-171-1/+1
| | | | | | | | make setup_trampoline non-static. This way, it won't conflict with the extern declaration in smp.h Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: adapt voyager's trampoline_baseGlauber Costa2008-04-171-4/+4
| | | | | | | | | Change voyager's trampoline base to unsigned char * instead of u32. This way, it won't conflict with the other architectures when including smp.h Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move trampoline arrays extern definition to smp.hGlauber Costa2008-04-172-13/+0
| | | | | | | In here, they can serve both architectures Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make x86_64 accept the max_cpus parameterGlauber Costa2008-04-173-13/+19
| | | | | | | The parameter passing parsing is done in the common smpboot.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge __cpu_disable and cpu_dieGlauber Costa2008-04-173-146/+85
| | | | | | | They are now equal, and are moved to a common file Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: do not clear cpu_online_mapGlauber Costa2008-04-171-2/+1
| | | | | | | | it was already cleared two lines above, and so, this removal is bogus Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use remove_from_maps in cpu_disableGlauber Costa2008-04-172-6/+9
| | | | | | | | it is already used in x86_64. In i386, it only removes from cpu_online_map Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove vector_lock around cpu_online_mapGlauber Costa2008-04-171-3/+1
| | | | | | | | This lock does not protect cpu_online_map, so its length can be shortened, and in some cases, removed. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move cpu_coregroup_map to common fileGlauber Costa2008-04-173-28/+16
| | | | | | | it is equal between architectures Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move sibling functions to common fileGlauber Costa2008-04-173-177/+88
| | | | | | | | | set_cpu_sibling_map() and remove_sibling_info() are equal between architectures, and are now moved to common file Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make remove_siblinginfo non-staticGlauber Costa2008-04-171-1/+1
| | | | | | | this is done to match i386 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make set_cpu_sibling_map nonstaticGlauber Costa2008-04-171-1/+1
| | | | | | | And move its extern definition to smp.h, the common header Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move equal types to common fileGlauber Costa2008-04-173-60/+28
| | | | | | | | | | | move definitions that are now equal in type from smpboot_{32,64}.c to smpboot.c cpu_callin_map is put temporarily in smp_64.h (already exists in smp_32.h), and will soon be merged. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: adjust types in smpcommon_32.cGlauber Costa2008-04-171-3/+3
| | | | | | | so they can have the same type as x86_64 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: get rid of smp_32.c and smp_64.cGlauber Costa2008-04-174-118/+93
| | | | | | | | | This patch merges the copyright notices, and valuable comments that were left back on smp_{32,64}.c. With that, files are empty, and are deleted Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create tlb filesGlauber Costa2008-04-175-511/+517
| | | | | | | | this patch creates tlb_32.c and tlb_64.c, with tlb-related functions that used to live in smp*.c files. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create ipi.cGlauber Costa2008-04-173-154/+179
| | | | | | | | This patch moves all ipi and apic related functions from smp_32.c to ipi.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create smp.cGlauber Costa2008-04-174-429/+255
| | | | | | | | this patch moves all the functions and data structures that look like exactly the same from smp_{32,64}.c to smp.c Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_send_stopGlauber Costa2008-04-171-1/+2
| | | | | | | | function definition is moved to common header. x86_64 version is now called native_smp_send_stop Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: add reboot_force test to native_smp_send_stopGlauber Costa2008-04-171-2/+7
| | | | | | | | This can be safely added to i386. After that, functions look exactly the same for both arches Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: make stop_this_cpu looks exactly equal in both archesGlauber Costa2008-04-172-3/+4
| | | | | | | | | with the hlt_works change, it is possible to have i386 and x86_64 stop_this_cpu() looking exactly the same. They can, after that, be merged. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: change x86_64 smp_call_function_mask to look alike i386Glauber Costa2008-04-172-42/+17
| | | | | | | | | the two versions (the inner version, and the outer version, that takes the locks) of smp_call_function_mask are made into one. With the changes, i386 and x86_64 versions look exactly the same. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: provide __smp_call_functionGlauber Costa2008-04-171-1/+33
| | | | | | | | | | | This function is used in smp_send_stop(). It's like smp_call_function_mask, but always go to all online cpus, and does not take any locks. It is added to x86_64, but will soon be unified in a common file Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: create smpcommon.cGlauber Costa2008-04-174-139/+85
| | | | | | | | | | | | | This patch creates smpcommon.c with functions that are equal between architectures. The i386-only init_gdt is ifdef'd. Note that smpcommon.o figures twice in the Makefile: this is because sub-architectures like voyager that does not use the normal smp_$(BITS) files also have to access them Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove irqs disabled warning.Glauber Costa2008-04-171-3/+0
| | | | | | | there's already a warning in the topmost function Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: remove export for smp_call_function_mask.Glauber Costa2008-04-171-1/+0
| | | | | | | | with this removal, exports for both i386 and x86_64, regarding the "smp_call_function" series are now the same. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move prefill_possible_map to common fileGlauber Costa2008-04-173-52/+54
| | | | | | | | | this patches moves prefill_possible_map() to smpboot.c Right now it is x86_64-specific, but nothing intrinsically prevents it to be used by i386 Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: use disabled_cpus in i386Glauber Costa2008-04-171-1/+5
| | | | | | | | this patch allows a cpu to be marked as present but disabled in i386, just as x86_64 currently does. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_cpus_doneGlauber Costa2008-04-172-1/+3
| | | | | | | | definition is moved to common header. x86_64 version is now called native_smp_cpus_done Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_prepare_cpusGlauber Costa2008-04-172-1/+2
| | | | | | | | definition is moved to common header. x86_64 version is now called native_smp_prepare_cpus Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify prepare_boot_cpuGlauber Costa2008-04-172-1/+2
| | | | | | | | definition is moved to common header. x86_64 version is now called native_prepare_boot_cpu Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify __cpu_up.Glauber Costa2008-04-172-1/+2
| | | | | | | | function definition is moved to common header. x86_64 version is now called native_cpu_up Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: unify smp_call_function_maskGlauber Costa2008-04-171-3/+4
| | | | | | | | definition is moved to common header, x86_64 function name now is native_smp_call_function_mask Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: merge smp_send_rescheduleGlauber Costa2008-04-171-2/+5
| | | | | | | | function definition is moved to common header, x86_64 version is now called native_smp_send_reschedule Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: move smp_ops extern declaration to common headerGlauber Costa2008-04-171-0/+2
| | | | | | | | the smp_ops symbol is temporarily defined in smp_64.c, but it will soon be unified Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: reserve end-of-conventional-memory to 1MB, 64-bit, use paravirt_enabledAlexander van Heukelum2008-04-171-5/+1
| | | | | | | | | | | | | Jeremy Fitzhardinge pointed out that looking at the boot_params struct to determine if the system is running in a paravirtual environment is not reliable for the Xen case, currently. He also points out that there already exists a function to determine if the system is running in a paravirtual environment. So let's use that instead. This gets rid of the preprocessor test too. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* x86: reserve end-of-conventional-memory to 1MB, 32-bit, use paravirt_enabledAlexander van Heukelum2008-04-171-5/+2
| | | | | | | | | | | | | Jeremy Fitzhardinge pointed out that looking at the boot_params struct to determine if the system is running in a paravirtual environment is not reliable for the Xen case, currently. He also points out that there already exists a function to determine if the system is running in a paravirtual environment. So let's use that instead. This gets rid of the preprocessor test too. Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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