Messages in this thread | | | Date | Tue, 28 May 2019 11:04:13 +0100 | From | Will Deacon <> | Subject | Re: [PATCH 0/4] arm64: wire up VM_FLUSH_RESET_PERMS |
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On Thu, May 23, 2019 at 11:22:52AM +0100, Ard Biesheuvel wrote: > Wire up the code introduced in v5.2 to manage the permissions > of executable vmalloc regions (and their linear aliases) more > strictly. > > One of the things that came up in the internal discussion is > whether non-x86 architectures have any benefit at all from the > lazy vunmap feature, and whether it would perhaps be better to > implement eager vunmap instead. > > Cc: Nadav Amit <namit@vmware.com> > Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> > Cc: Peter Zijlstra <peterz@infradead.org> > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Will Deacon <will.deacon@arm.com> > Cc: Masami Hiramatsu <mhiramat@kernel.org> > Cc: James Morse <james.morse@arm.com> > > Ard Biesheuvel (4): > arm64: module: create module allocations without exec permissions > arm64/mm: wire up CONFIG_ARCH_HAS_SET_DIRECT_MAP > arm64/kprobes: set VM_FLUSH_RESET_PERMS on kprobe instruction pages > arm64: bpf: do not allocate executable memory > > arch/arm64/Kconfig | 1 + > arch/arm64/include/asm/cacheflush.h | 3 ++ > arch/arm64/kernel/module.c | 4 +- > arch/arm64/kernel/probes/kprobes.c | 4 +- > arch/arm64/mm/pageattr.c | 48 ++++++++++++++++---- > arch/arm64/net/bpf_jit_comp.c | 2 +- > mm/vmalloc.c | 11 ----- > 7 files changed, 50 insertions(+), 23 deletions(-)
Thanks, this all looks good to me. I can get pick this up for 5.2 if Rick's fixes [1] land soon enough.
Cheers,
Will
[1] https://lore.kernel.org/lkml/20190527211058.2729-1-rick.p.edgecombe@intel.com/T/#u
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