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Date: Tue, 20 Mar 2012 13:41:32 -0700 From: Suresh Siddha <suresh.b.siddha@...el.com> To: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> Cc: Josh Boyer <jwboyer@...hat.com>, Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>, yinghai@...nel.org, linux-kernel@...r.kernel.org, kernel-team@...oraproject.org, midgoon@...il.com Subject: Re: 3.2.1 Unable to reset IRR messages on boot On Tue, 2012-03-20 at 16:25 -0400, Konrad Rzeszutek Wilk wrote: > On Tue, Mar 20, 2012 at 01:05:19PM -0700, Suresh Siddha wrote: > > Also does the dom0 see all the GSI's/io-apic's that the host sees or is > > it going to be just one io-apic? I was just wondering if the reg 01 need > > to be same as what the host sees? > > It does not use the APIC mechanism at all. It only needs the GSI value > from the IOAPIC and LAPIC so that the ACPI can work. So the number of redirection entries in the io-apic need to be same as the original values then? > It could also at startup copy the original values and stick them in these copies. > That does mean using the memory allocator to allocate X copies for X IOAPICS. I > don't think the memory allocator is active at that stage since we using fixmaps. > Thoughts? You should be able to use alloc_bootmem friends. thanks, suresh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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