2006-10-25 12:38:00

by Tuncer Ayaz

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Subject: IO_APIC broken by 45edfd1db02f818b3dc7e4743ee8585af6b78f78

I've bisected the non-working'ness of HD-Audio and USB Mouse on one of
my x86_64 boxes back to the following commit.

The machine is an HP xw4400 Core 2 Duo E6600 with the Intel 975X chipset.
Please let me know if you need any debug info.

45edfd1db02f818b3dc7e4743ee8585af6b78f78 is first bad commit
commit 45edfd1db02f818b3dc7e4743ee8585af6b78f78
Author: Yinghai Lu <[email protected]>
Date: Sat Oct 21 18:37:01 2006 +0200

[PATCH] x86-64: typo in __assign_irq_vector when updating pos for
vector and offset

typo with cpu instead of new_cpu

Signed-off-by: Yinghai Lu <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>

:040000 040000 1d64801d89bfb23ef4d63d1625f47122d01ded6c
03bb862d9bfdfb05fb5382d56d52ffe1c5f8aba2 M arch

Accordingly ther revert-diff is this
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index b000017..1fa95d5 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -651,12 +651,12 @@ next:
if (vector == IA32_SYSCALL_VECTOR)
goto next;
for_each_cpu_mask(new_cpu, domain)
- if (per_cpu(vector_irq, new_cpu)[vector] != -1)
+ if (per_cpu(vector_irq, cpu)[vector] != -1)
goto next;
/* Found one! */
for_each_cpu_mask(new_cpu, domain) {
- pos[new_cpu].vector = vector;
- pos[new_cpu].offset = offset;
+ pos[cpu].vector = vector;
+ pos[cpu].offset = offset;
}
if (old_vector >= 0) {
int old_cpu;


2006-10-25 13:03:37

by Muli Ben-Yehuda

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Subject: Re: IO_APIC broken by 45edfd1db02f818b3dc7e4743ee8585af6b78f78

On Wed, Oct 25, 2006 at 02:37:57PM +0200, Tuncer Ayaz wrote:
> I've bisected the non-working'ness of HD-Audio and USB Mouse on one of
> my x86_64 boxes back to the following commit.
>
> The machine is an HP xw4400 Core 2 Duo E6600 with the Intel 975X chipset.
> Please let me know if you need any debug info.

These two patches should fix it:

http://marc.theaimsgroup.com/?l=linux-kernel&m=116157813623508&w=2
http://marc.theaimsgroup.com/?l=linux-kernel&m=116157837104613&w=2

Cheers,
Muli

2006-10-25 14:37:25

by Tuncer Ayaz

[permalink] [raw]
Subject: Re: IO_APIC broken by 45edfd1db02f818b3dc7e4743ee8585af6b78f78

On 10/25/06, Muli Ben-Yehuda <[email protected]> wrote:
> On Wed, Oct 25, 2006 at 02:37:57PM +0200, Tuncer Ayaz wrote:
> > I've bisected the non-working'ness of HD-Audio and USB Mouse on one of
> > my x86_64 boxes back to the following commit.
> >
> > The machine is an HP xw4400 Core 2 Duo E6600 with the Intel 975X chipset.
> > Please let me know if you need any debug info.
>
> These two patches should fix it:
>
> http://marc.theaimsgroup.com/?l=linux-kernel&m=116157813623508&w=2
> http://marc.theaimsgroup.com/?l=linux-kernel&m=116157837104613&w=2

Thanks, a clean v2.6.19-rc3 plus those two patches solves the issues.
I assume that the fixes will be pulled into Linus' tree before 2.6.19
is released.

2006-10-26 14:41:08

by Tuncer Ayaz

[permalink] [raw]
Subject: Re: IO_APIC broken by 45edfd1db02f818b3dc7e4743ee8585af6b78f78

On 10/25/06, Tuncer Ayaz <[email protected]> wrote:
> On 10/25/06, Muli Ben-Yehuda <[email protected]> wrote:
> > On Wed, Oct 25, 2006 at 02:37:57PM +0200, Tuncer Ayaz wrote:
> > > I've bisected the non-working'ness of HD-Audio and USB Mouse on one of
> > > my x86_64 boxes back to the following commit.
> > >
> > > The machine is an HP xw4400 Core 2 Duo E6600 with the Intel 975X chipset.
> > > Please let me know if you need any debug info.
> >
> > These two patches should fix it:
> >
> > http://marc.theaimsgroup.com/?l=linux-kernel&m=116157813623508&w=2
> > http://marc.theaimsgroup.com/?l=linux-kernel&m=116157837104613&w=2
>
> Thanks, a clean v2.6.19-rc3 plus those two patches solves the issues.
> I assume that the fixes will be pulled into Linus' tree before 2.6.19
> is released.

Linus' tree as of this morning CEST time has the two patches included and
everything's fine. Case closed.