[xen staging] x86/spec-ctrl: Print all AMD speculative hints/features

[patchbot@xxxxxxx]

commit 3d189f16a11d5a209fb47fa3635847608d43745c
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Wed Sep 8 18:21:10 2021 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Thu Sep 9 12:36:17 2021 +0100

    x86/spec-ctrl: Print all AMD speculative hints/features
    
    We already print Intel features that aren't yet implemented/used, so be
    consistent on AMD too.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/spec_ctrl.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index f0c67d41b8..16d2a1d172 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -321,7 +321,7 @@ static void __init print_details(enum ind_thunk thunk, 
uint64_t caps)
      * Hardware read-only information, stating immunity to certain issues, or
      * suggestions of which mitigation to use.
      */
-    printk("  Hardware hints:%s%s%s%s%s%s%s\n",
+    printk("  Hardware hints:%s%s%s%s%s%s%s%s%s%s%s\n",
            (caps & ARCH_CAPS_RDCL_NO)                        ? " RDCL_NO"      
  : "",
            (caps & ARCH_CAPS_IBRS_ALL)                       ? " IBRS_ALL"     
  : "",
            (caps & ARCH_CAPS_RSBA)                           ? " RSBA"         
  : "",
@@ -329,16 +329,23 @@ static void __init print_details(enum ind_thunk thunk, 
uint64_t caps)
            (e8b  & cpufeat_mask(X86_FEATURE_SSB_NO)) ||
            (caps & ARCH_CAPS_SSB_NO)                         ? " SSB_NO"       
  : "",
            (caps & ARCH_CAPS_MDS_NO)                         ? " MDS_NO"       
  : "",
-           (caps & ARCH_CAPS_TAA_NO)                         ? " TAA_NO"       
  : "");
+           (caps & ARCH_CAPS_TAA_NO)                         ? " TAA_NO"       
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_IBRS_ALWAYS))    ? " IBRS_ALWAYS"  
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_STIBP_ALWAYS))   ? " STIBP_ALWAYS" 
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_IBRS_FAST))      ? " IBRS_FAST"    
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_IBRS_SAME_MODE)) ? " 
IBRS_SAME_MODE" : "");
 
     /* Hardware features which need driving to mitigate issues. */
-    printk("  Hardware features:%s%s%s%s%s%s%s%s%s\n",
+    printk("  Hardware features:%s%s%s%s%s%s%s%s%s%s\n",
            (e8b  & cpufeat_mask(X86_FEATURE_IBPB)) ||
            (_7d0 & cpufeat_mask(X86_FEATURE_IBRSB))          ? " IBPB"         
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_IBRS)) ||
            (_7d0 & cpufeat_mask(X86_FEATURE_IBRSB))          ? " IBRS"         
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_AMD_STIBP)) ||
            (_7d0 & cpufeat_mask(X86_FEATURE_STIBP))          ? " STIBP"        
  : "",
            (e8b  & cpufeat_mask(X86_FEATURE_AMD_SSBD)) ||
            (_7d0 & cpufeat_mask(X86_FEATURE_SSBD))           ? " SSBD"         
  : "",
+           (e8b  & cpufeat_mask(X86_FEATURE_PSFD))           ? " PSFD"         
  : "",
            (_7d0 & cpufeat_mask(X86_FEATURE_L1D_FLUSH))      ? " L1D_FLUSH"    
  : "",
            (_7d0 & cpufeat_mask(X86_FEATURE_MD_CLEAR))       ? " MD_CLEAR"     
  : "",
            (_7d0 & cpufeat_mask(X86_FEATURE_SRBDS_CTRL))     ? " SRBDS_CTRL"   
  : "",
--
generated by git-patchbot for /home/xen/git/xen.git#staging