Re: PV - different behavior of pgd_offset in xen 4.6 and 4.13 for GUEST ACCESSIBLE memory area

2021-10-08 Thread Charles Gonçalves
Thanks for pointing this fix Jan. It helped me a lot. Best! On Fri, Oct 8, 2021, 10:30 Jan Beulich wrote: > On 07.10.2021 17:10, Charles Gonçalves wrote: > > During some experiments in my PhD I've tried to reused a code from > > Jann Horn ( >

Re: PV - different behavior of pgd_offset in xen 4.6 and 4.13 for GUEST ACCESSIBLE memory area

2021-10-08 Thread Jan Beulich
On 07.10.2021 17:10, Charles Gonçalves wrote: > During some experiments in my PhD I've tried to reused a code from > Jann Horn (https://bugs.chromium.org/p/project-zero/issues/detail?id=1184 > ) that used the mapping in > > ``` > 0x8040 - 0x807f [256GB, 2^38 bytes,

PV - different behavior of pgd_offset in xen 4.6 and 4.13 for GUEST ACCESSIBLE memory area

2021-10-07 Thread Charles Gonçalves
Hello Guys, During some experiments in my PhD I've tried to reused a code from Jann Horn (https://bugs.chromium.org/p/project-zero/issues/detail?id=1184 ) that used the mapping in ``` 0x8040 - 0x807f [256GB, 2^38 bytes, PML4:256] Reserved for future shared info with the