4.13-stable review patch. If anyone has any objections, please let me know.
------------------ From: Suzuki K Poulose <[email protected]> commit c0d8832e78cbfd4a64b7112e34920af4b0b0e60e upstream. We trap and emulate some instructions (e.g, mrs, deprecated instructions) for the userspace. However the handlers for these are registered as late_initcalls and the userspace could be up and running from the initramfs by that time (with populate_rootfs, which is a rootfs_initcall()). This could cause problems for the early applications ending up in failure like : [ 11.152061] modprobe[93]: undefined instruction: pc=0000ffff8ca48ff4 This patch promotes the specific calls to core_initcalls, which are guaranteed to be completed before we hit userspace. Cc: Dave Martin <[email protected]> Cc: Matthias Brugger <[email protected]> Cc: James Morse <[email protected]> Reported-by: Matwey V. Kornilov <[email protected]> Signed-off-by: Suzuki K Poulose <[email protected]> Signed-off-by: Catalin Marinas <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/arm64/kernel/armv8_deprecated.c | 2 +- arch/arm64/kernel/cpufeature.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -649,4 +649,4 @@ static int __init armv8_deprecated_init( return 0; } -late_initcall(armv8_deprecated_init); +core_initcall(armv8_deprecated_init); --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1294,4 +1294,4 @@ static int __init enable_mrs_emulation(v return 0; } -late_initcall(enable_mrs_emulation); +core_initcall(enable_mrs_emulation);
