aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2008-04-17x86: fix paranoia about using BIOS quickboot mechanism.Alok Kataria
> > Make sure that we clear the "shutdown status flag" in the CMOS > > register after each CPU is brought up. This fixes a problem where the > > "shutdown status flag" may remain set when a CPU is brought up after > > booting. > > btw., what problem does this result in, exactly? The shutdown status flag set to "0xA", corresponds to "JMP double word request without INT init". This JMP at reboot time is at an unintended location. And results in Triple faults in our case. Though this error at reboot can be safely ignored in a VM environment, am not sure what the effect would be on a physical system. May be it will result in a triple fault and an eventual hardware reset thus masking this BUG in the kernel. This fix just makes sure that we reset that status flag after initialization is done. Fix paranoia about using BIOS quickboot mechanism. Make sure that we clear the "shutdown status flag" in the CMOS register after each CPU is brought up. This fixes a problem where the "shutdown status flag" may remain set when a CPU is brought up after booting. Signed-off-by: Alok N Kataria <akataria@vmware.com> Signed-off-by: Dan Arai <arai@vmware.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: print out buggy mptableYinghai Lu
print out buggy mptable, instead of skipping it quietly Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use cpu_online()Akinobu Mita
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use cpumask_of_cpu()Akinobu Mita
Use cpumask_of_cpu() rather than the pair of cpus_clear() and cpu_set(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: remove unnecessary tmp local variableAkinobu Mita
There is no reason to use obscurer name. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: remove unnecessary memset()Akinobu Mita
No need to clear the memory allocated by alloc_bootmem(). It is already filled with zero. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: use ioapic_read_entry() and ioapic_write_entry()Akinobu Mita
Remove duplicate code by using ioapic_read_entry() and ioapic_write_entry() in io_apic_{32,64}.c Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: avoid redundant loop in io_apic_level_ack_pending()Akinobu Mita
If one can find an ack pending pin, there is no need to check the rest of them. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: remove superfluous initialisation in boot code.Alexander van Heukelum
In arch/x86/boot/compressed/misc.c, the variable vidmem is the only variable that ends up in de data segment. It's also superfluous, because the first thing the code does is: if (RM_SCREEN_INFO.orig_video_mode == 7) { vidmem = (char *) 0xb0000; vidport = 0x3b4; } else { vidmem = (char *) 0xb8000; vidport = 0x3d4; } This patch removes the initialisation. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: merge mpparse_{32,64}.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify mp_register_gsiAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify mp_config_acpi_legacy_irqsAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify mp_register_ioapicAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify uniq_io_apic_idAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify smp_scan_configAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify get_smp_configAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify construct_default_ioirq_mptableAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify smp_read_mpcAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify mp_bus_infoAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: unify arch/x86/kernel/mpparse_64.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: add early flags to mpparse_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: lindent mpparse_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_register_lapic_address to boot.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_register_lapic to boot.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move up & smp variables to setup.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_irqs to io_apic_64.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_irqs to io_apics_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_ioapic_routing to boot.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_ioapics to io_apic_64.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move mp_ioapics to io_apic_32.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: don't set io apic features if io-apic is not enabled, fixIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: don't set IO APIC features if IO APIC is not enabledAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move x86_bios_cpu_apicid_init to smpboot.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move x86_cpu_to_apicid_init to smpboot.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move phys_cpu_present_map to setup.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move x86_cpu_to_apicid to setup.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: move x86_bios_cpu_apicid to io_apic_64.cAlexey Starikovskiy
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: 4kstacks defaultIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: fix VisualWS and Voyager kexec build failuresRandy Dunlap
without this patch: VOYAGER: kernel/built-in.o: In function `crash_kexec': (.text+0x28588): undefined reference to `machine_crash_shutdown' VISWS: kernel/built-in.o: In function `crash_kexec': /next-20080401/kernel/kexec.c:1074: undefined reference to `machine_crash_shutdown' make[1]: *** [.tmp_vmlinux1] Error 1 because arch/x86/kernel/reboot.c isn't built since CONFIG_X86_BIOS_REBOOT=n, so machine_crash_shutdown() isn't available. This patch does seem a small bit odd since the KEXEC help text says that kexec is independent of the system firmware. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: MPSC should use P6 NOPsHugh Dickins
I've now noticed that the machine I call MPENTIUM4 for 32-bit kernels is called MPSC for 64-bit kernels, and in that case it still doesn't get the P6 NOPs it ought to. hpa explains that MK8 should still be excluded, so it's just a matter of including MPSC along with MPENTIUM4. Signed-off-by: Hugh Dickins <hugh@veritas.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: debug Store - call kfree if only we really need itCyrill Gorcunov
We should call for kfree if only we really need it. Though it's safe to call kfree with NULL pointer passed in this code we've already tested the pointer and can eliminate the call Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: extend the scheduled bzImage symlinks removalIngo Molnar
use of the bzImage symlinks in developer scripts is still widespread, so lets extend the removal period by 2 years. These symlinks cost us near nothing. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: improve default idleIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: support for new UV apic, fixJack Steiner
Yinghai Lu pointed out a bug in the previous patches, fix double-shift of apicid. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: set_cyc2ns_scale() remove prev scaleIngo Molnar
Peter Zijlstra pointed out that it's unused. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: clean up non-smp usage of cpu mapsMike Travis
Cleanup references to the early cpu maps for the non-SMP configuration and remove some functions called for SMP configurations only. Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: uv fixIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: support for new UV apicJack Steiner
UV supports really big systems. So big, in fact, that the APICID register does not contain enough bits to contain an APICID that is unique across all cpus. The UV BIOS supports 3 APICID modes: - legacy mode. This mode uses the old APIC mode where APICID is in bits [31:24] of the APICID register. - x2apic mode. This mode is whitebox-compatible. APICIDs are unique across all cpus. Standard x2apic APIC operations (Intel-defined) can be used for IPIs. The node identifier fits within the Intel-defined portion of the APICID register. - x2apic-uv mode. In this mode, the APICIDs on each node have unique IDs, but IDs on different node are not unique. For example, if each mode has 32 cpus, the APICIDs on each node might be 0 - 31. Every node has the same set of IDs. The UV hub is used to route IPIs/interrupts to the correct node. Traditional APIC operations WILL NOT WORK. In x2apic-uv mode, the ACPI tables all contain a full unique ID (note: exact bit layout still changing but the following is close): nnnnnnnnnnlc0cch n = unique node number l = socket number on board c = core h = hyperthread Only the "lc0cch" bits are written to the APICID register. The remaining bits are supplied by having the get_apic_id() function "OR" the extra bits into the value read from the APICID register. (Hmmm.. why not keep the ENTIRE APICID register in per-cpu data....) The x2apic-uv mode is recognized by the MADT table containing: oem_id = "SGI" oem_table_id = "UV-X" Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: support for new UV apic, prepareIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-17x86: define the macros and tables for blade functionsJack Steiner
Add UV macros for converting between cpu numbers, blade numbers and node numbers. Note that these are used ONLY within x86_64 UV modules, and are not for general kernel use. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-13 14:27:26 +0000