File 62d65105-x86-spec-ctrl-MD_CLEAR-reporting.patch of Package xen.27273
# Commit fdbf8bdfebc2ed323c521848f642cc4f6b8cb662
# Date 2022-07-19 08:36:53 +0200
# Author Jan Beulich <jbeulich@suse.com>
# Committer Jan Beulich <jbeulich@suse.com>
x86/spec-ctrl: correct per-guest-type reporting of MD_CLEAR
There are command line controls for this and the default also isn't "always
enable when hardware supports it", which logging should take into account.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
--- a/xen/arch/x86/spec_ctrl.c
+++ b/xen/arch/x86/spec_ctrl.c
@@ -511,13 +511,12 @@ static void __init print_details(enum in
printk(" Support for HVM VMs:%s%s%s%s%s%s\n",
(boot_cpu_has(X86_FEATURE_SC_MSR_HVM) ||
boot_cpu_has(X86_FEATURE_SC_RSB_HVM) ||
- boot_cpu_has(X86_FEATURE_MD_CLEAR) ||
boot_cpu_has(X86_FEATURE_IBPB_ENTRY_HVM) ||
- opt_eager_fpu) ? "" : " None",
+ opt_eager_fpu || opt_md_clear_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" : "",
- boot_cpu_has(X86_FEATURE_MD_CLEAR) ? " MD_CLEAR" : "",
+ opt_md_clear_hvm ? " MD_CLEAR" : "",
boot_cpu_has(X86_FEATURE_IBPB_ENTRY_HVM) ? " IBPB-entry" : "");
#endif
@@ -525,13 +524,12 @@ static void __init print_details(enum in
printk(" Support for PV VMs:%s%s%s%s%s%s\n",
(boot_cpu_has(X86_FEATURE_SC_MSR_PV) ||
boot_cpu_has(X86_FEATURE_SC_RSB_PV) ||
- boot_cpu_has(X86_FEATURE_MD_CLEAR) ||
boot_cpu_has(X86_FEATURE_IBPB_ENTRY_PV) ||
- opt_eager_fpu) ? "" : " None",
+ opt_eager_fpu || opt_md_clear_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" : "",
- boot_cpu_has(X86_FEATURE_MD_CLEAR) ? " MD_CLEAR" : "",
+ opt_md_clear_pv ? " MD_CLEAR" : "",
boot_cpu_has(X86_FEATURE_IBPB_ENTRY_PV) ? " IBPB-entry" : "");
printk(" XPTI (64-bit PV only): Dom0 %s, DomU %s (with%s PCID)\n",