kvm fails to boot GNU Hurd kernels with 4.4 Xenial kernel
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Colin Ian King | ||
Xenial |
Fix Released
|
High
|
Colin Ian King |
Bug Description
Since 4.4, I have not been able to boot GNU Hurd Kernels using KVM QEMU. I tracked this regression down to commit e8dd2d2d641c ("Silence compiler warning in arch/x86/
This has been recently fixed with upstream commit 0c1d77f4ba5cc9c
KVM: x86: fix conversion of addresses to linear in 32-bit protected mode
Commit e8dd2d2d641c ("Silence compiler warning in arch/x86/
2015-09-06) broke boot of the Hurd. The bug is that the "default:"
case actually could modify "la", but after the patch this change is
not reflected in *linear.
The bug is visible whenever a non-zero segment base causes the linear
address to wrap around the 4GB mark.
Fixes: e8dd2d2d641cb27
Cc: <email address hidden>
Reported-by: Aurelien Jarno <email address hidden>
Tested-by: Aurelien Jarno <email address hidden>
Signed-off-by: Paolo Bonzini <email address hidden>
Related branches
description: | updated |
Changed in linux (Ubuntu Xenial): | |
status: | In Progress → Fix Committed |
Fix sent to kernel team mailing list for review and inclusion into 4.4 Xenial linux kernel: https:/ /lists. ubuntu. com/archives/ kernel- team/2016- February/ 072324. html