Re: [PATCH 1/2] pvpanic: introduce crashloaded for pvpanic

zhenwei pi <pizhenwei(a)bytedance.com&gt; writes: > Add bit 1 for pvpanic. This bit means that guest hits a panic, but > guest wants to handle error by itself. Typical case: Linux guest runs > kdump in panic. It will help us to separate the abnormal reboot from > normal operation. > > Signed-off-by: zhenwei pi <pizhenwei(a)bytedance.com&gt; > --- > docs/specs/pvpanic.txt | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/docs/specs/pvpanic.txt b/docs/specs/pvpanic.txt > index c7bbacc778..bdea68a430 100644 > --- a/docs/specs/pvpanic.txt > +++ b/docs/specs/pvpanic.txt > @@ -16,8 +16,12 @@ pvpanic exposes a single I/O port, by default 0x505. On read, the bits > recognized by the device are set. Software should ignore bits it doesn't > recognize. On write, the bits not recognized by the device are ignored. > Software should set only bits both itself and the device recognize. Guest software, I presume. > -Currently, only bit 0 is recognized, setting it indicates a guest panic > -has happened. > + > +Bit Definition > +-------------- > +bit 0: setting it indicates a guest panic has happened. > +bit 1: named crashloaded. setting it indicates a guest panic and run > + kexec to handle error by guest itself. Suggest to scratch "named crashloaded."