Messages in this thread Patch in this message | | | Date | Mon, 5 Mar 2018 12:43:27 +0000 | From | Will Deacon <> | Subject | Re: [PATCH] scripts/kallsyms: filter arm64's __efistub_ symbols |
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On Thu, Mar 01, 2018 at 05:19:01PM +0000, Ard Biesheuvel wrote: > On arm64, the EFI stub and the kernel proper are essentially the same > binary, although the EFI stub executes at a different virtual address > as the kernel. For this reason, the EFI stub is restricted in the > symbols it can link to, which is ensured by prefixing all EFI stub > symbols with __efistub_ (and emitting __efistub_ prefixed aliases for > routines that may be shared between the core kernel and the stub) > > These symbols are leaking into kallsyms, polluting the namespace, so > let's filter them explicitly. > > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> > --- > scripts/kallsyms.c | 1 + > 1 file changed, 1 insertion(+)
Thanks, I'll take this via arm64.
Will
> diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c > index 9ee9bf7fd1a2..1dd24c5b9b47 100644 > --- a/scripts/kallsyms.c > +++ b/scripts/kallsyms.c > @@ -221,6 +221,7 @@ static int symbol_valid(struct sym_entry *s) > > static char *special_prefixes[] = { > "__crc_", /* modversions */ > + "__efistub_", /* arm64 EFI stub namespace */ > NULL }; > > static char *special_suffixes[] = { > -- > 2.11.0 >
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