This is a follow up to an email chain that in November:
http://www.seabios.org/pipermail/seabios/2015-November/009887.html
It was possible for the SeaBIOS code to get confused if an external
reboot request occurs while seabios is already in the process of
handling a boot or reboot.
This two patch series attempts to make the SeaBIOS reboot code more
robust. With these patches the code maintains an invariant - if
HaveRunPost is false then the BIOS code will be in a pristine state
and it is okay to run the "post" boot logic; if HaveRunPost is true
then the reboot logic must be run before starting the "post" boot
logic. The reboot handler should always return the BIOS code to a
pristine state prior to clearing HaveRunPost.
-Kevin
Kevin O'Connor (2):
resume: Make KVM soft reboot loop detection more flexible
post: Always set HaveRunPost prior to setting any other global
variable
src/fw/csm.c | 1 +
src/fw/shadow.c | 17 +++++++++++++++--
src/fw/xen.c | 1 +
src/post.c | 20 ++++++++++++++++----
src/resume.c | 9 ---------
src/util.h | 1 +
6 files changed, 34 insertions(+), 15 deletions(-)
--
2.5.0
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