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authorSuresh Siddha <suresh.b.siddha@intel.com>2008-07-11 14:24:19 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-12 08:44:58 +0200
commit2d7a66d02e11af9ab8e16c76d22767e622b4e3d7 (patch)
treee8e58ce9f752cb90fe42d5b74cde0f1d1cde3147 /virt
parent0c81c746f9bdbfaafe64322d540c8b7b59c27314 (diff)
x64, x2apic/intr-remap: Interrupt-remapping and x2apic support, fix
Yinghai Lu wrote: > Setting APIC routing to physical flat > Kernel panic - not syncing: Boot APIC ID in local APIC unexpected (0 vs 4) > Pid: 1, comm: swapper Not tainted 2.6.26-rc9-tip-01763-g74f94b1-dirty #320 > > Call Trace: > [<ffffffff80a21505>] ? set_cpu_sibling_map+0x38c/0x3bd > [<ffffffff80245215>] ? read_xapic_id+0x25/0x3e > [<ffffffff80e5a2c3>] ? verify_local_APIC+0x139/0x1b9 > [<ffffffff80245215>] ? read_xapic_id+0x25/0x3e > [<ffffffff80e589af>] ? native_smp_prepare_cpus+0x224/0x2e9 > [<ffffffff80e4881a>] ? kernel_init+0x64/0x341 > [<ffffffff8022a439>] ? child_rip+0xa/0x11 > [<ffffffff80e487b6>] ? kernel_init+0x0/0x341 > [<ffffffff8022a42f>] ? child_rip+0x0/0x11 > > > guess read_apic_id changing cuase some problem... genapic's read_apic_id() returns the actual apic id extracted from the APIC_ID register. And in some cases like UV, read_apic_id() returns completely different values from APIC ID register. Use the native apic register read, rather than genapic read_apic_id() in verify_local_APIC() And also, lapic_suspend() should also use native apic register read. Reported-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org> Cc: "arjan@linux.intel.com" <arjan@linux.intel.com> Cc: "andi@firstfloor.org" <andi@firstfloor.org> Cc: "ebiederm@xmission.com" <ebiederm@xmission.com> Cc: "jbarnes@virtuousgeek.org" <jbarnes@virtuousgeek.org> Cc: "steiner@sgi.com" <steiner@sgi.com> Cc: "jeremy@goop.org" <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions