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On a system where SNP is disabled in the BIOS the > message is still printed at boot even though RMPOPT is never actually used > (snp_enable_rmpopt() bails out on !CC_ATTR_HOST_SEV_SNP), which is > misleading. > > rmpopt_init() is only the software setup (workqueue and the delayed work); > the capability that matters for the message - an active SNP host - is > checked in snp_enable_rmpopt(). Move the announcement there, as a > pr_info_once(), so it is emitted only when RMPOPT is actually enabled on an > SNP host. > > Fixes: c6c6f156d192 ("x86/sev: Perform RMP optimizations asynchronously") > Signed-off-by: Ashish Kalra > --- > > Note: in the posted series the pr_info_once() lived in > snp_enable_rmpopt() (SNP-gated); when applied, c6c6f156d192 moved it to > rmpopt_init() (feature-only-gated) as a plain pr_info(). This restores the > original placement. > arch/x86/virt/svm/sev.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/virt/svm/sev.c b/arch/x86/virt/svm/sev.c > index 43e4945e6cdf..6f5f4ee821d0 100644 > --- a/arch/x86/virt/svm/sev.c > +++ b/arch/x86/virt/svm/sev.c > @@ -656,8 +656,6 @@ static int __init rmpopt_init(void) Should the check at the start of rmpopt_init() just be if (!cpu_feature_enabled(X86_FEATURE_SEV_SNP) || !cpu_feature_enabled(X86_FEATURE_RMPOPT)) so that you don't even bother setting up the workqueue, etc.? Thanks, Tom > if ((rmpopt_pa_end - rmpopt_pa_start) > SZ_2T) > rmpopt_pa_end = rmpopt_pa_start + SZ_2T; > > - pr_info("RMPOPT optimizations enabled\n"); > - > rmpopt_soft_init = true; > > return 0; > @@ -690,6 +688,8 @@ void snp_enable_rmpopt(void) > > mod_delayed_work(rmpopt_wq, &rmpopt_delayed_work, > msecs_to_jiffies(RMPOPT_WORK_TIMEOUT)); > + > + pr_info_once("RMPOPT optimizations enabled\n"); > } > EXPORT_SYMBOL_FOR_MODULES(snp_enable_rmpopt, "ccp,kvm-amd"); >