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authorWeidong Han <weidong.han@intel.com>2009-04-10 17:17:17 +0800
committerIngo Molnar <mingo@elte.hu>2009-04-10 13:12:17 +0200
commit746cddd37d48a166f170165a0df4bd50fde1ea60 (patch)
tree39b8d13da613de619de8e54372e72fef67310cb7 /arch/parisc/hpux/sys_hpux.c
parentf20ab9c38fb85b4dde8b4139788ab9e735a35279 (diff)
x86, intr-remap: fix eoi for interrupt remapping without x2apic
To simplify level irq migration in the presence of interrupt-remapping, Suresh used a virtual vector (io-apic pin number) to eliminate io-apic RTE modification. Level triggered interrupt will appear as an edge to the local apic cpu but still as level to the IO-APIC. So in addition to do the local apic EOI, it still needs to do IO-APIC directed EOI to clear the remote IRR bit in the IO-APIC RTE. Pls refer to Suresh's patch for more details (commit 0280f7c416c652a2fd95d166f52b199ae61122c0). Now interrupt remapping is decoupled from x2apic, it also needs to do the directed EOI for apic. Otherwise, apic interrupts won't work correctly. Signed-off-by: Weidong Han <weidong.han@intel.com> Cc: iommu@lists.linux-foundation.org Cc: Weidong Han <weidong.han@intel.com> Cc: suresh.b.siddha@intel.com Cc: dwmw2@infradead.org Cc: allen.m.kay@intel.com LKML-Reference: <1239355037-22856-1-git-send-email-weidong.han@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/parisc/hpux/sys_hpux.c')
0 files changed, 0 insertions, 0 deletions