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

x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL

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-speculation-fix-typo-ibrs_att-which-should-be-ibrs_all.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 Thu Feb 8 03:33:09 CET 2018

From: Darren Kenny darren.kenny@oracle.com Date: Fri, 2 Feb 2018 19:12:20 +0000 Subject: x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL

From: Darren Kenny darren.kenny@oracle.com

(cherry picked from commit af189c95a371b59f493dbe0f50c0a09724868881)

Fixes: 117cc7a908c83 ("x86/retpoline: Fill return stack buffer on vmexit") Signed-off-by: Darren Kenny darren.kenny@oracle.com Signed-off-by: Thomas Gleixner tglx@linutronix.de Reviewed-by: Konrad Rzeszutek Wilk konrad.wilk@oracle.com Cc: Tom Lendacky thomas.lendacky@amd.com Cc: Andi Kleen ak@linux.intel.com Cc: Borislav Petkov bp@alien8.de Cc: Masami Hiramatsu mhiramat@kernel.org Cc: Arjan van de Ven arjan@linux.intel.com Cc: David Woodhouse dwmw@amazon.co.uk Link: https://lkml.kernel.org/r/20180202191220.blvgkgutojecxr3b@starbug-vm.ie.orac... Signed-off-by: David Woodhouse dwmw@amazon.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/include/asm/nospec-branch.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/include/asm/nospec-branch.h +++ b/arch/x86/include/asm/nospec-branch.h @@ -150,7 +150,7 @@ extern char __indirect_thunk_end[]; * On VMEXIT we must ensure that no RSB predictions learned in the guest * can be followed in the host, by overwriting the RSB completely. Both * retpoline and IBRS mitigations for Spectre v2 need this; only on future - * CPUs with IBRS_ATT *might* it be avoided. + * CPUs with IBRS_ALL *might* it be avoided. */ static inline void vmexit_fill_RSB(void) {

Patches currently in stable-queue which might be from darren.kenny@oracle.com are

queue-4.9/kvm-vmx-allow-direct-access-to-msr_ia32_spec_ctrl.patch queue-4.9/kvm-svm-allow-direct-access-to-msr_ia32_spec_ctrl.patch queue-4.9/x86-speculation-fix-typo-ibrs_att-which-should-be-ibrs_all.patch queue-4.9/kvm-vmx-emulate-msr_ia32_arch_capabilities.patch