Re: [Xen-devel] [PATCH v2] x86/xen: fix pv boot

2018-11-07 Thread Andrew Cooper
On 07/11/18 17:01, Juergen Gross wrote: > Commit 9da3f2b7405440 ("x86/fault: BUG() when uaccess helpers fault on > kernel addresses") introduced a regression for booting Xen PV guests. > > Xen PV guests are using __put_user() and __get_user() for accessing the > p2m map (physical to machine frame

[Xen-devel] [PATCH v2] x86/xen: fix pv boot

2018-11-07 Thread Juergen Gross
Commit 9da3f2b7405440 ("x86/fault: BUG() when uaccess helpers fault on kernel addresses") introduced a regression for booting Xen PV guests. Xen PV guests are using __put_user() and __get_user() for accessing the p2m map (physical to machine frame number map) as accesses might fail in case of not