[MODERATED] Re: The Annoying Affair - Bulletin #1

On Mon, Oct 28, 2019 at 09:31:40AM +0100, speck for Thomas Gleixner wrote:
> The stable branches linux-5.3.y, linux-4.19.y and linix-4.14.y have the
> backports. These need some careful inspection and testing.

Intel is testing these backports.

For commit "kvm/x86: Export MDS_NO=0 to guests when TSX is enabled"
backport to 4.4 has dependency on below upstream commits.

0cf9135b773bf32fba9dd8e6699c1b331ee4b749 KVM: x86: Emulate MSR_IA32_ARCH_CAPABILITIES on AMD hosts 
5b76a3cff011df2dcb6186c965a2e4d809a05ad4 KVM: VMX: Tell the nested hypervisor to skip L1D flush on vmentry

There is a minor fix for 4.14 backport.

---
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index f668e10a2669..8a7eccf7ba7b 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -31,6 +31,8 @@
 #include <asm/intel-family.h>
 #include <asm/e820.h>
 
+#include "cpu.h"
+
 static void __init spectre_v1_select_mitigation(void);
 static void __init spectre_v2_select_mitigation(void);
 static void __init ssb_select_mitigation(void);