This is a note to let you know that I've just added the patch titled
ARM: 8746/1: vfp: Go back to clearing vfp_current_hw_state[]
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: arm-8746-1-vfp-go-back-to-clearing-vfp_current_hw_state.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 1328f02005bbbaed15b9d5b7f3ab5ec9d4d5268a Mon Sep 17 00:00:00 2001
From: Fabio Estevam festevam@gmail.com Date: Mon, 22 Jan 2018 12:20:26 +0100 Subject: ARM: 8746/1: vfp: Go back to clearing vfp_current_hw_state[]
From: Fabio Estevam festevam@gmail.com
commit 1328f02005bbbaed15b9d5b7f3ab5ec9d4d5268a upstream.
Commit 384b38b66947 ("ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu") fixed the cpu dying notifier by clearing vfp_current_hw_state[]. However commit e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine") incorrectly used the original vfp_force_reload() function in the cpu dying notifier.
Fix it by going back to clearing vfp_current_hw_state[].
Fixes: e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine") Cc: linux-stable stable@vger.kernel.org Reported-by: Kohji Okuno okuno.kohji@jp.panasonic.com Signed-off-by: Fabio Estevam fabio.estevam@nxp.com Signed-off-by: Russell King rmk+kernel@armlinux.org.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm/vfp/vfpmodule.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -648,7 +648,7 @@ int vfp_restore_user_hwstate(struct user */ static int vfp_dying_cpu(unsigned int cpu) { - vfp_force_reload(cpu, current_thread_info()); + vfp_current_hw_state[cpu] = NULL; return 0; }
Patches currently in stable-queue which might be from festevam@gmail.com are
queue-4.15/arm-8746-1-vfp-go-back-to-clearing-vfp_current_hw_state.patch