[Crash-utility] [PATCH] Fix pvops Xen detection for arm machine

[HAGIO KAZUHITO(萩尾 一仁)]

-----Original Message-----
> 
> On 2021/12/16 4:01 PM, HAGIO KAZUHITO(萩尾 一仁) wrote:
> > -----Original Message-----
> >> Since the xen_start_info on the arm/arm64 platform is static defined:
> >>
> >> ./arm/xen/enlighten.c:40:static struct start_info _xen_start_info;
> >> ./arm/xen/enlighten.c:41:struct start_info *xen_start_info = &_xen_start_info;
> >> ./arm/xen/enlighten.c:42:EXPORT_SYMBOL(xen_start_info);
> >>
> >> The is_pvops_xen() in commit 4badc6229c69f5cd9da7eb7bdf400a53ec6db01a
> >> ("Fix pvops Xen detection for kernels >= v4.20") always return TRUE.
> >> Then the following error will be reported because p2m_mid_missing
> >> and xen_p2m_addr are not defined:
> >>
> >> 	crash: cannot resolve "p2m_top"
> >>
> >> For the arm/arm64 platform, fix it by using xen_vcpu_info instead of
> >> xen_start_info to detect Xen dumps.
> >>
> >> Signed-off-by: Qi Zheng <zhengqi.arch at bytedance.com>
> >
> > I cannot test it on arm, but the patch looks good to me.
> >
> > Acked-by: Kazuhito Hagio <k-hagio-ab at nec.com>
> 
> Thanks. I see that it takes at least two Acked-bys to be merged into the
> mainline, so anyone else has any comments?

Hi Qi,

Lianbo will merge or comment after his review, please wait for a while.

Thanks,
Kazu