Messages in this thread | | | Subject | Re: [PATCH 0/4] arm64: wire up VM_FLUSH_RESET_PERMS | From | Ard Biesheuvel <> | Date | Tue, 28 May 2019 12:29:21 +0200 |
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On 5/28/19 12:04 PM, Will Deacon wrote: > 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. >
Note that you'll get a trivial conflict in the hunk against mm/vmalloc.c.
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