Hosts the 0x221E linux distro kernel. https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.2.y 2022-09-28T09:22:10Z 2022-09-28T09:22:10Z Nicholas Miehlbradt nicholas@linux.ibm.com 2022-09-26T07:57:26Z urn:sha1:a5edf9815dd739fce660b4c8658f61b7d2517042 KFENCE support was added for ppc32 in commit 90cbac0e995d ("powerpc: Enable KFENCE for PPC32"). Enable KFENCE on ppc64 architecture with hash and radix MMUs. It uses the same mechanism as debug pagealloc to protect/unprotect pages. All KFENCE kunit tests pass on both MMUs. KFENCE memory is initially allocated using memblock but is later marked as SLAB allocated. This necessitates the change to __pud_free to ensure that the KFENCE pages are freed appropriately. Based on previous work by Christophe Leroy and Jordan Niethe. Signed-off-by: Nicholas Miehlbradt <nicholas@linux.ibm.com> Reviewed-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220926075726.2846-4-nicholas@linux.ibm.com 2021-03-24T03:09:30Z Christophe Leroy christophe.leroy@csgroup.eu 2021-03-04T14:35:09Z urn:sha1:90cbac0e995dd92f7bcf82f74aa50250bf194a4a Add architecture specific implementation details for KFENCE and enable KFENCE for the ppc32 architecture. In particular, this implements the required interface in <asm/kfence.h>. KFENCE requires that attributes for pages from its memory pool can individually be set. Therefore, force the Read/Write linear map to be mapped at page granularity. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Marco Elver <elver@google.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/8dfe1bd2abde26337c1d8c1ad0acfcc82185e0d5.1614868445.git.christophe.leroy@csgroup.eu