This is a note to let you know that I've just added the patch titled

x86/kaiser: Reenable PARAVIRT

to the 4.9-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: x86-kaiser-reenable-paravirt.patch and it can be found in the queue-4.9 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 foo@baz Wed Jan 3 20:37:21 CET 2018

From: Borislav Petkov bp@suse.de Date: Tue, 2 Jan 2018 14:19:49 +0100 Subject: x86/kaiser: Reenable PARAVIRT

From: Borislav Petkov bp@suse.de

Now that the required bits have been addressed, reenable PARAVIRT.

Signed-off-by: Borislav Petkov bp@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- security/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/security/Kconfig +++ b/security/Kconfig @@ -34,7 +34,7 @@ config SECURITY config KAISER bool "Remove the kernel mapping in user mode" default y - depends on X86_64 && SMP && !PARAVIRT + depends on X86_64 && SMP help This enforces a strict kernel and user space isolation, in order to close hardware side channels on kernel address information.

Patches currently in stable-queue which might be from bp@suse.de are

queue-4.9/x86-paravirt-dont-patch-flush_tlb_single.patch queue-4.9/x86-kaiser-reenable-paravirt.patch queue-4.9/x86-kaiser-rename-and-simplify-x86_feature_kaiser-handling.patch queue-4.9/x86-kaiser-check-boottime-cmdline-params.patch queue-4.9/x86-kaiser-move-feature-detection-up.patch