[xen stable-4.15] x86/spec: fix reporting of BHB clearing usage from guest entry points

[patchbot@xxxxxxx]

commit 7f73536e2644722ec87dc491511cc0f9f762d1eb
Author:     Roger Pau Monné <roger.pau@xxxxxxxxxx>
AuthorDate: Mon Apr 29 10:20:58 2024 +0200
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Mon Apr 29 10:20:58 2024 +0200

    x86/spec: fix reporting of BHB clearing usage from guest entry points
    
    Reporting whether the BHB clearing on entry is done for the different 
domains
    types based on cpu_has_bhb_seq is unhelpful, as that variable signals 
whether
    there's a BHB clearing sequence selected, but that alone doesn't imply that
    such sequence is used from the PV and/or HVM entry points.
    
    Instead use opt_bhb_entry_{pv,hvm} which do signal whether BHB clearing is
    performed on entry from PV/HVM.
    
    Fixes: 689ad48ce9cf ('x86/spec-ctrl: Wire up the Native-BHI software 
sequences')
    Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    master commit: 049ab0b2c9f1f5edb54b505fef0bc575787dafe9
    master date: 2024-04-25 16:35:56 +0200
---
 xen/arch/x86/spec_ctrl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/xen/arch/x86/spec_ctrl.c b/xen/arch/x86/spec_ctrl.c
index 6ce2815746..d6f8b31394 100644
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -617,14 +617,14 @@ static void __init print_details(enum ind_thunk thunk)
            (boot_cpu_has(X86_FEATURE_SC_MSR_HVM) ||
             boot_cpu_has(X86_FEATURE_SC_RSB_HVM) ||
             boot_cpu_has(X86_FEATURE_IBPB_ENTRY_HVM) ||
-            cpu_has_bhb_seq ||
+            opt_bhb_entry_hvm ||
             opt_eager_fpu || opt_verw_hvm)           ? ""               : " 
None",
            boot_cpu_has(X86_FEATURE_SC_MSR_HVM)      ? " MSR_SPEC_CTRL" : "",
            boot_cpu_has(X86_FEATURE_SC_RSB_HVM)      ? " RSB"           : "",
            opt_eager_fpu                             ? " EAGER_FPU"     : "",
            opt_verw_hvm                              ? " VERW"          : "",
            boot_cpu_has(X86_FEATURE_IBPB_ENTRY_HVM)  ? " IBPB-entry"    : "",
-           cpu_has_bhb_seq                           ? " BHB-entry"     : "");
+           opt_bhb_entry_hvm                         ? " BHB-entry"     : "");
 
 #endif
 #ifdef CONFIG_PV
@@ -632,14 +632,14 @@ static void __init print_details(enum ind_thunk thunk)
            (boot_cpu_has(X86_FEATURE_SC_MSR_PV) ||
             boot_cpu_has(X86_FEATURE_SC_RSB_PV) ||
             boot_cpu_has(X86_FEATURE_IBPB_ENTRY_PV) ||
-            cpu_has_bhb_seq ||
+            opt_bhb_entry_pv ||
             opt_eager_fpu || opt_verw_pv)            ? ""               : " 
None",
            boot_cpu_has(X86_FEATURE_SC_MSR_PV)       ? " MSR_SPEC_CTRL" : "",
            boot_cpu_has(X86_FEATURE_SC_RSB_PV)       ? " RSB"           : "",
            opt_eager_fpu                             ? " EAGER_FPU"     : "",
            opt_verw_pv                               ? " VERW"          : "",
            boot_cpu_has(X86_FEATURE_IBPB_ENTRY_PV)   ? " IBPB-entry"    : "",
-           cpu_has_bhb_seq                           ? " BHB-entry"     : "");
+           opt_bhb_entry_pv                          ? " BHB-entry"     : "");
 
     printk("  XPTI (64-bit PV only): Dom0 %s, DomU %s (with%s PCID)\n",
            opt_xpti_hwdom ? "enabled" : "disabled",
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.15