Re: [PATCH v2 01/14] x86/fault: Fix AMD erratum #91 errata fixup for user code

2021-02-09 Thread Christoph Hellwig
Looks good, Reviewed-by: Christoph Hellwig

[PATCH v2 01/14] x86/fault: Fix AMD erratum #91 errata fixup for user code

2021-02-09 Thread Andy Lutomirski
The recent rework of probe_kernel_address() and its conversion to get_kernel_nofault() inadvertently broke is_prefetch(). Before this change, probe_kernel_address() was used as a sloppy "read user or kernel memory" helper, but it doesn't do that any more. The new get_kernel_nofault() reads *kernel