[xen stable-4.16] x86/spec-ctrl: Fix the rendering of FB_CLEAR

[patchbot@xxxxxxx]

commit 5010f37d9664057ced5ee71217957c3a47933706
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Mon Jun 12 20:24:00 2023 +0100
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Tue Aug 8 16:02:54 2023 +0100

    x86/spec-ctrl: Fix the rendering of FB_CLEAR
    
    FB_CLEAR is a read-only status bit, not a read-write control.  Move it from
    "Hardware features" into "Hardware hints".
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
    (cherry picked from commit 921afcbae843bb3f575a8f4a270b8e6cf471f4ca)
---
 xen/arch/x86/spec_ctrl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index 0c6b10b290..701843311c 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -420,7 +420,7 @@ static void __init print_details(enum ind_thunk thunk)
      * 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%s%s%s%s%s%s%s%s%s%s%s\n",
+    printk("  Hardware hints:%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
            (caps & ARCH_CAPS_RDCL_NO)                        ? " RDCL_NO"      
  : "",
            (caps & ARCH_CAPS_EIBRS)                          ? " EIBRS"        
  : "",
            (caps & ARCH_CAPS_RSBA)                           ? " RSBA"         
  : "",
@@ -433,6 +433,7 @@ static void __init print_details(enum ind_thunk thunk)
            (caps & ARCH_CAPS_SBDR_SSDP_NO)                   ? " SBDR_SSDP_NO" 
  : "",
            (caps & ARCH_CAPS_FBSDP_NO)                       ? " FBSDP_NO"     
  : "",
            (caps & ARCH_CAPS_PSDP_NO)                        ? " PSDP_NO"      
  : "",
+           (caps & ARCH_CAPS_FB_CLEAR)                       ? " FB_CLEAR"     
  : "",
            (caps & ARCH_CAPS_PBRSB_NO)                       ? " PBRSB_NO"     
  : "",
            (e8b  & cpufeat_mask(X86_FEATURE_IBRS_ALWAYS))    ? " IBRS_ALWAYS"  
  : "",
            (e8b  & cpufeat_mask(X86_FEATURE_STIBP_ALWAYS))   ? " STIBP_ALWAYS" 
  : "",
@@ -442,7 +443,7 @@ static void __init print_details(enum ind_thunk thunk)
            (e8b  & cpufeat_mask(X86_FEATURE_IBPB_RET))       ? " IBPB_RET"     
  : "");
 
     /* Hardware features which need driving to mitigate issues. */
-    printk("  Hardware features:%s%s%s%s%s%s%s%s%s%s%s%s\n",
+    printk("  Hardware features:%s%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)) ||
@@ -458,7 +459,6 @@ static void __init print_details(enum ind_thunk thunk)
            (_7d0 & cpufeat_mask(X86_FEATURE_SRBDS_CTRL))     ? " SRBDS_CTRL"   
  : "",
            (e8b  & cpufeat_mask(X86_FEATURE_VIRT_SSBD))      ? " VIRT_SSBD"    
  : "",
            (caps & ARCH_CAPS_TSX_CTRL)                       ? " TSX_CTRL"     
  : "",
-           (caps & ARCH_CAPS_FB_CLEAR)                       ? " FB_CLEAR"     
  : "",
            (caps & ARCH_CAPS_FB_CLEAR_CTRL)                  ? " 
FB_CLEAR_CTRL"  : "");
 
     /* Compiled-in support which pertains to mitigations. */
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.16