Patchwork qemux86: disable paravirt guest in linux 3.4, causes test failures

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Submitter Ross Burton
Date May 7, 2013, 5:08 p.m.
Message ID <1367946490-9159-1-git-send-email-ross.burton@intel.com>
Download mbox | patch
Permalink /patch/49495/
State Accepted
Commit 3e0455f3cf104ce95f40aa989b21d9a70efee34c
Headers show

Comments

Ross Burton - May 7, 2013, 5:08 p.m.
The shutdown sanity test that we previously saw on qemux86-64 in 2.6.37 have
started to re-appear reproducably on qemux86 in 3.4 in the Danny series.  Until
this can be root-caused and fixed in the kernel, disable paravirtualisation
across all kernels and all qemu machines.

[ YOCTO #4196 ]

Signed-off-by: Ross Burton <ross.burton@intel.com>
---
 meta/recipes-kernel/linux/linux-yocto_3.4.bb |    1 -
 1 file changed, 1 deletion(-)
Bruce Ashfield - May 7, 2013, 5:12 p.m.
On 13-05-07 01:08 PM, Ross Burton wrote:
> The shutdown sanity test that we previously saw on qemux86-64 in 2.6.37 have
> started to re-appear reproducably on qemux86 in 3.4 in the Danny series.  Until
> this can be root-caused and fixed in the kernel, disable paravirtualisation
> across all kernels and all qemu machines.

Acked-by: Bruce Ashfield <bruce.ashfield@windriver.com>

(I also have pending updates to the latest 3.4 + LTSI, so it's worth
checking to see if they happen to help here. Or was it only when these
were applied that we started seeing this ?).

Bruce

>
> [ YOCTO #4196 ]
>
> Signed-off-by: Ross Burton <ross.burton@intel.com>
> ---
>   meta/recipes-kernel/linux/linux-yocto_3.4.bb |    1 -
>   1 file changed, 1 deletion(-)
>
> diff --git a/meta/recipes-kernel/linux/linux-yocto_3.4.bb b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> index b81b9ac..18d665a 100644
> --- a/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> +++ b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> @@ -26,5 +26,4 @@ COMPATIBLE_MACHINE = "qemuarm|qemux86|qemuppc|qemumips|qemux86-64"
>   KERNEL_FEATURES_append = " features/netfilter/netfilter.scc"
>   KERNEL_FEATURES_append_qemux86=" cfg/sound.scc"
>   KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
> -KERNEL_FEATURES_append_qemux86=" cfg/paravirt_kvm.scc"
>   KERNEL_FEATURES_append = " ${@bb.utils.contains("TUNE_FEATURES", "mx32", " cfg/x32.scc", "" ,d)}"
>
Ross Burton - May 7, 2013, 5:16 p.m.
On 7 May 2013 18:12, Bruce Ashfield <bruce.ashfield@windriver.com> wrote:
> (I also have pending updates to the latest 3.4 + LTSI, so it's worth
> checking to see if they happen to help here. Or was it only when these
> were applied that we started seeing this ?).

They crash is sufficiently rare that I'm not able to precisely point
at when it started appearing - I just ran ~twenty cycles of the tests
and it only hit once.

Ross
Darren Hart - May 7, 2013, 6:28 p.m.
On 05/07/2013 10:08 AM, Ross Burton wrote:
> The shutdown sanity test that we previously saw on qemux86-64 in 2.6.37 have
> started to re-appear reproducably on qemux86 in 3.4 in the Danny series.  Until
> this can be root-caused and fixed in the kernel, disable paravirtualisation
> across all kernels and all qemu machines.
> 
> [ YOCTO #4196 ]
> 
> Signed-off-by: Ross Burton <ross.burton@intel.com>

Acked-by: Darren Hart <dvhart@linux.intel.com>

> ---
>  meta/recipes-kernel/linux/linux-yocto_3.4.bb |    1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/meta/recipes-kernel/linux/linux-yocto_3.4.bb b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> index b81b9ac..18d665a 100644
> --- a/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> +++ b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
> @@ -26,5 +26,4 @@ COMPATIBLE_MACHINE = "qemuarm|qemux86|qemuppc|qemumips|qemux86-64"
>  KERNEL_FEATURES_append = " features/netfilter/netfilter.scc"
>  KERNEL_FEATURES_append_qemux86=" cfg/sound.scc"
>  KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
> -KERNEL_FEATURES_append_qemux86=" cfg/paravirt_kvm.scc"
>  KERNEL_FEATURES_append = " ${@bb.utils.contains("TUNE_FEATURES", "mx32", " cfg/x32.scc", "" ,d)}"
>

Patch

diff --git a/meta/recipes-kernel/linux/linux-yocto_3.4.bb b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
index b81b9ac..18d665a 100644
--- a/meta/recipes-kernel/linux/linux-yocto_3.4.bb
+++ b/meta/recipes-kernel/linux/linux-yocto_3.4.bb
@@ -26,5 +26,4 @@  COMPATIBLE_MACHINE = "qemuarm|qemux86|qemuppc|qemumips|qemux86-64"
 KERNEL_FEATURES_append = " features/netfilter/netfilter.scc"
 KERNEL_FEATURES_append_qemux86=" cfg/sound.scc"
 KERNEL_FEATURES_append_qemux86-64=" cfg/sound.scc"
-KERNEL_FEATURES_append_qemux86=" cfg/paravirt_kvm.scc"
 KERNEL_FEATURES_append = " ${@bb.utils.contains("TUNE_FEATURES", "mx32", " cfg/x32.scc", "" ,d)}"