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: [email protected] Cc: Catalin Marinas <[email protected]> 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]> --- arch/arm64/kernel/armv8_deprecated.c | 2 +- arch/arm64/kernel/cpufeature.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index f0e6d717885b..d06fbe4cd38d 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -649,4 +649,4 @@ static int __init armv8_deprecated_init(void) return 0; } -late_initcall(armv8_deprecated_init); +core_initcall(armv8_deprecated_init); diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index cd52d365d1f0..21e2c95d24e7 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1307,4 +1307,4 @@ static int __init enable_mrs_emulation(void) return 0; } -late_initcall(enable_mrs_emulation); +core_initcall(enable_mrs_emulation); -- 2.13.6
