| 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.oracle.com |
| 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) |
| { |
