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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2018-03-01 20:19:01 +0300
committerWill Deacon <will.deacon@arm.com>2018-03-06 21:52:33 +0300
commit1212f7a16af492d59304ba3abccbcc5b5e41423e (patch)
treeedb8c23a1b890439f2a90b38285d7720d47c6ecc
parent9597e74396c02c8189215dcdfc08088a9b8d8087 (diff)
downloadlinux-1212f7a16af492d59304ba3abccbcc5b5e41423e.tar.xz
scripts/kallsyms: filter arm64's __efistub_ symbols
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> Signed-off-by: Will Deacon <will.deacon@arm.com>
-rw-r--r--scripts/kallsyms.c1
1 files changed, 1 insertions, 0 deletions
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[] = {