Public bug reported:
As is the case for bionic, linux-kvm requires UNWINDER_FRAME_POINTER vs
UNWINDER_ORC:
commit 028eb9123f783b3a38936b1a02a235c4680f873d
Author: Seth Forshee <seth.fors...@canonical.com>
Date: Sat Dec 9 22:08:25 2017 -0600
UBUNTU: [Config] CONFIG_UNWINDER_FRAME_POINTER=y for amd64
During the rebase to 4.15 UNWINDER_ORC was chosen as the stack
unwinder as it promises a 5-10% performance improvement over
using UNWINDER_FRAME_POINTER. However it turns out to have a
couple of downsides. It adds a new requierment for building dkms
modules, and it does not produce the reliable stack traces
required for livepatch. Switch back to UNWINDER_FRAME_POINTER.
Signed-off-by: Seth Forshee <seth.fors...@canonical.com>
** Affects: linux-kvm (Ubuntu)
Importance: Undecided
Assignee: Kamal Mostafa (kamalmostafa)
Status: In Progress
** Affects: linux-kvm (Ubuntu Bionic)
Importance: Undecided
Assignee: Kamal Mostafa (kamalmostafa)
Status: In Progress
** Also affects: linux-kvm (Ubuntu Bionic)
Importance: Undecided
Assignee: Kamal Mostafa (kamalmostafa)
Status: In Progress
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Packages, which is subscribed to linux-kvm in Ubuntu.
https://bugs.launchpad.net/bugs/1763107
Title:
linux-kvm 4.15 needs UNWINDER_FRAME_POINTER
Status in linux-kvm package in Ubuntu:
In Progress
Status in linux-kvm source package in Bionic:
In Progress
Bug description:
As is the case for bionic, linux-kvm requires UNWINDER_FRAME_POINTER
vs UNWINDER_ORC:
commit 028eb9123f783b3a38936b1a02a235c4680f873d
Author: Seth Forshee <seth.fors...@canonical.com>
Date: Sat Dec 9 22:08:25 2017 -0600
UBUNTU: [Config] CONFIG_UNWINDER_FRAME_POINTER=y for amd64
During the rebase to 4.15 UNWINDER_ORC was chosen as the stack
unwinder as it promises a 5-10% performance improvement over
using UNWINDER_FRAME_POINTER. However it turns out to have a
couple of downsides. It adds a new requierment for building dkms
modules, and it does not produce the reliable stack traces
required for livepatch. Switch back to UNWINDER_FRAME_POINTER.
Signed-off-by: Seth Forshee <seth.fors...@canonical.com>
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https://bugs.launchpad.net/ubuntu/+source/linux-kvm/+bug/1763107/+subscriptions
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