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Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.9.21/0008-x86-spectre_v2-Don-t-check-microcode-versions-when-r.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.9.21/0008-x86-spectre_v2-Don-t-check-microcode-versions-when-r.patch | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.9.21/0008-x86-spectre_v2-Don-t-check-microcode-versions-when-r.patch b/common/recipes-kernel/linux/linux-yocto-4.9.21/0008-x86-spectre_v2-Don-t-check-microcode-versions-when-r.patch deleted file mode 100644 index 0f35decd..00000000 --- a/common/recipes-kernel/linux/linux-yocto-4.9.21/0008-x86-spectre_v2-Don-t-check-microcode-versions-when-r.patch +++ /dev/null @@ -1,60 +0,0 @@ -From 03a686fb1ba599b2ed6b0bb256fa364f629ed2c7 Mon Sep 17 00:00:00 2001 -From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> -Date: Mon, 26 Feb 2018 09:35:01 -0500 -Subject: [PATCH 08/14] x86/spectre_v2: Don't check microcode versions when - running under hypervisors -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -commit 36268223c1e9981d6cfc33aff8520b3bde4b8114 upstream. - -As: - - 1) It's known that hypervisors lie about the environment anyhow (host - mismatch) - - 2) Even if the hypervisor (Xen, KVM, VMWare, etc) provided a valid - "correct" value, it all gets to be very murky when migration happens - (do you provide the "new" microcode of the machine?). - -And in reality the cloud vendors are the ones that should make sure that -the microcode that is running is correct and we should just sing lalalala -and trust them. - -Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> -Signed-off-by: Thomas Gleixner <tglx@linutronix.de> -Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> -Cc: Wanpeng Li <kernellwp@gmail.com> -Cc: kvm <kvm@vger.kernel.org> -Cc: Krčmář <rkrcmar@redhat.com> -Cc: Borislav Petkov <bp@alien8.de> -CC: "H. Peter Anvin" <hpa@zytor.com> -CC: stable@vger.kernel.org -Link: https://lkml.kernel.org/r/20180226213019.GE9497@char.us.oracle.com -Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ---- - arch/x86/kernel/cpu/intel.c | 7 +++++++ - 1 file changed, 7 insertions(+) - -diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c -index 6ed206b..7680425 100644 ---- a/arch/x86/kernel/cpu/intel.c -+++ b/arch/x86/kernel/cpu/intel.c -@@ -103,6 +103,13 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c) - { - int i; - -+ /* -+ * We know that the hypervisor lie to us on the microcode version so -+ * we may as well hope that it is running the correct version. -+ */ -+ if (cpu_has(c, X86_FEATURE_HYPERVISOR)) -+ return false; -+ - for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) { - if (c->x86_model == spectre_bad_microcodes[i].model && - c->x86_stepping == spectre_bad_microcodes[i].stepping) --- -2.7.4 - |