| Message ID | 147190846546.9523.8365293594479732082.stgit@brijesh-build-machine (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 23/08/2016 01:27, Brijesh Singh wrote: > In current implementation, asid allocation starts from 1, this patch > adds a min_asid variable in svm_vcpu structure to allow starting asid > from something other than 1. > > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> > --- > arch/x86/kvm/svm.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c > index 211be94..f010b23 100644 > --- a/arch/x86/kvm/svm.c > +++ b/arch/x86/kvm/svm.c > @@ -470,6 +470,7 @@ struct svm_cpu_data { > u64 asid_generation; > u32 max_asid; > u32 next_asid; > + u32 min_asid; > struct kvm_ldttss_desc *tss_desc; > > struct page *save_area; > @@ -726,6 +727,7 @@ static int svm_hardware_enable(void) > sd->asid_generation = 1; > sd->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1; > sd->next_asid = sd->max_asid + 1; > + sd->min_asid = 1; > > native_store_gdt(&gdt_descr); > gdt = (struct desc_struct *)gdt_descr.address; > @@ -1887,7 +1889,7 @@ static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *sd) > { > if (sd->next_asid > sd->max_asid) { > ++sd->asid_generation; > - sd->next_asid = 1; > + sd->next_asid = sd->min_asid; > svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID; > } > > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@kvack.org. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> > Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 211be94..f010b23 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -470,6 +470,7 @@ struct svm_cpu_data { u64 asid_generation; u32 max_asid; u32 next_asid; + u32 min_asid; struct kvm_ldttss_desc *tss_desc; struct page *save_area; @@ -726,6 +727,7 @@ static int svm_hardware_enable(void) sd->asid_generation = 1; sd->max_asid = cpuid_ebx(SVM_CPUID_FUNC) - 1; sd->next_asid = sd->max_asid + 1; + sd->min_asid = 1; native_store_gdt(&gdt_descr); gdt = (struct desc_struct *)gdt_descr.address; @@ -1887,7 +1889,7 @@ static void new_asid(struct vcpu_svm *svm, struct svm_cpu_data *sd) { if (sd->next_asid > sd->max_asid) { ++sd->asid_generation; - sd->next_asid = 1; + sd->next_asid = sd->min_asid; svm->vmcb->control.tlb_ctl = TLB_CONTROL_FLUSH_ALL_ASID; }
In current implementation, asid allocation starts from 1, this patch adds a min_asid variable in svm_vcpu structure to allow starting asid from something other than 1. Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> --- arch/x86/kvm/svm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html