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New: android emulator broken since d7a2a24 kernel commit

Bug 98841 [email protected] 2 participants 5 messages May 24, 2015 – Jun 26, 2015 KVM

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https://bugzilla.kernel.org/show_bug.cgi?id=98841

Bug ID: 98841
Summary: android emulator broken since d7a2a24 kernel commit
Product: Virtualization
Version: unspecified
Kernel Version: 3.17
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
Assignee: [email protected]
Reporter: [email protected]
Regression: No

Hello,

For a while now I've noticed the android emulator not wanting to work anymore ..
With a lil' bit of git bisect I've found this kernel commit
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=d7a2a246a1b5a0b0c803e800019600051e1e6f1a
that seems to break it.

I've mailed the author .. submited a report to the google guys ( not sure if I did it right ) https://code.google.com/p/android/issues/detail?id=174557 ...

The problem was first reported by someone @ fedora ..
https://bugzilla.redhat.com/show_bug.cgi?id=1187982

Alot of details ( run logs ) are there.

Let me know if I can help test stuff.

Thanks in advance.

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In reply to [email protected]
Quoted 29 lines · [email protected] writes:

https://bugzilla.kernel.org/show_bug.cgi?id=98841

Bug ID: 98841
Summary: android emulator broken since d7a2a24 kernel commit
Product: Virtualization
Version: unspecified
Kernel Version: 3.17
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: kvm
Assignee: [email protected]
Reporter: [email protected]
Regression: No

Hello,

For a while now I've noticed the android emulator not wanting to work anymore ..
With a lil' bit of git bisect I've found this kernel commit
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=d7a2a246a1b5a0b0c803e800019600051e1e6f1a
that seems to break it.

I've mailed the author .. submited a report to the google guys ( not sure if I did it right ) https://code.google.com/p/android/issues/detail?id=174557 ...

Quoted 6 lines

The problem was first reported by someone @ fedora ..
https://bugzilla.redhat.com/show_bug.cgi?id=1187982

Alot of details ( run logs ) are there.

Let me know if I can help test stuff.

Ok, a quick look and it seems the patch is doing the right thing (as the spec) says. For PHYSBASE it's masking out bits 8-11 and for PHYSMASK bits 0-10. Are you sure Android Emulator isn't attempting to write to these reserved regions ?

What happens if you enable ignore_msrs ?
echo Y > /sys/module/kvm/parameters/ignore_msrs

Bandan

Quoted 1 line

Thanks in advance.

#3 lore raw

[Bug 98841] android emulator broken since d7a2a24 kernel commit

In reply to [email protected]

https://bugzilla.kernel.org/show_bug.cgi?id=98841

Adrian Sandu <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------
Kernel Version|4.0.4 |4.1

--- Comment #1 from Adrian Sandu <[email protected]> --- Still happening on 4.1-rc6 and all before since ~ 3.17 ..

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