diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0071-x86-retpoline-hyperv-Convert-assembler-indirect-jump.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0071-x86-retpoline-hyperv-Convert-assembler-indirect-jump.patch | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0071-x86-retpoline-hyperv-Convert-assembler-indirect-jump.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0071-x86-retpoline-hyperv-Convert-assembler-indirect-jump.patch deleted file mode 100644 index e5f0d609..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0071-x86-retpoline-hyperv-Convert-assembler-indirect-jump.patch +++ /dev/null @@ -1,79 +0,0 @@ -From f7a6ab11ff7949605f3be5cc96d8c44e16b8ed9e Mon Sep 17 00:00:00 2001 -From: David Woodhouse <dwmw@amazon.co.uk> -Date: Thu, 11 Jan 2018 21:46:30 +0000 -Subject: [PATCH 071/103] x86/retpoline/hyperv: Convert assembler indirect - jumps - -commit e70e5892b28c18f517f29ab6e83bd57705104b31 upstream. - -Convert all indirect jumps in hyperv inline asm code to use non-speculative -sequences when CONFIG_RETPOLINE is enabled. - -Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Acked-by: Arjan van de Ven <arjan@linux.intel.com> -Acked-by: Ingo Molnar <mingo@kernel.org> -Cc: gnomes@lxorguk.ukuu.org.uk -Cc: Rik van Riel <riel@redhat.com> -Cc: Andi Kleen <ak@linux.intel.com> -Cc: Josh Poimboeuf <jpoimboe@redhat.com> -Cc: thomas.lendacky@amd.com -Cc: Peter Zijlstra <peterz@infradead.org> -Cc: Linus Torvalds <torvalds@linux-foundation.org> -Cc: Jiri Kosina <jikos@kernel.org> -Cc: Andy Lutomirski <luto@amacapital.net> -Cc: Dave Hansen <dave.hansen@intel.com> -Cc: Kees Cook <keescook@google.com> -Cc: Tim Chen <tim.c.chen@linux.intel.com> -Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org> -Cc: Paul Turner <pjt@google.com> -Link: https://lkml.kernel.org/r/1515707194-20531-9-git-send-email-dwmw@amazon.co.uk -[ backport to 4.9, hopefully correct, not tested... - gregkh ] -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - drivers/hv/hv.c | 11 +++++++---- - 1 file changed, 7 insertions(+), 4 deletions(-) - -diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c -index e0a8216..13c32eb4 100644 ---- a/drivers/hv/hv.c -+++ b/drivers/hv/hv.c -@@ -31,6 +31,7 @@ - #include <linux/clockchips.h> - #include <asm/hyperv.h> - #include <asm/mshyperv.h> -+#include <asm/nospec-branch.h> - #include "hyperv_vmbus.h" - - /* The one and only */ -@@ -103,9 +104,10 @@ u64 hv_do_hypercall(u64 control, void *input, void *output) - return (u64)ULLONG_MAX; - - __asm__ __volatile__("mov %0, %%r8" : : "r" (output_address) : "r8"); -- __asm__ __volatile__("call *%3" : "=a" (hv_status) : -+ __asm__ __volatile__(CALL_NOSPEC : -+ "=a" (hv_status) : - "c" (control), "d" (input_address), -- "m" (hypercall_page)); -+ THUNK_TARGET(hypercall_page)); - - return hv_status; - -@@ -123,11 +125,12 @@ u64 hv_do_hypercall(u64 control, void *input, void *output) - if (!hypercall_page) - return (u64)ULLONG_MAX; - -- __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi), -+ __asm__ __volatile__ (CALL_NOSPEC : "=d"(hv_status_hi), - "=a"(hv_status_lo) : "d" (control_hi), - "a" (control_lo), "b" (input_address_hi), - "c" (input_address_lo), "D"(output_address_hi), -- "S"(output_address_lo), "m" (hypercall_page)); -+ "S"(output_address_lo), -+ THUNK_TARGET(hypercall_page)); - - return hv_status_lo | ((u64)hv_status_hi << 32); - #endif /* !x86_64 */ --- -2.7.4 - |