|
 |
016a62 |
From d5526e43ccf3532aa3a0f592e6df5740983a94e2 Mon Sep 17 00:00:00 2001
|
|
|
016a62 |
From: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
016a62 |
Date: Fri, 22 Nov 2019 11:53:35 +0000
|
|
|
016a62 |
Subject: [PATCH 02/16] i386: Add x-force-features option for testing
|
|
|
016a62 |
MIME-Version: 1.0
|
|
|
016a62 |
Content-Type: text/plain; charset=UTF-8
|
|
|
016a62 |
Content-Transfer-Encoding: 8bit
|
|
|
016a62 |
|
|
|
016a62 |
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
016a62 |
Message-id: <20191122115348.25000-3-pbonzini@redhat.com>
|
|
|
016a62 |
Patchwork-id: 92602
|
|
|
016a62 |
O-Subject: [RHEL8.2/rhel qemu-kvm PATCH 02/15] i386: Add x-force-features option for testing
|
|
|
016a62 |
Bugzilla: 1689270
|
|
|
016a62 |
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
016a62 |
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
016a62 |
RH-Acked-by: Maxim Levitsky <mlevitsk@redhat.com>
|
|
|
016a62 |
|
|
|
016a62 |
From: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
016a62 |
|
|
|
016a62 |
Add a new option that can be used to disable feature flag
|
|
|
016a62 |
filtering. This will allow CPU model compatibility test cases to
|
|
|
016a62 |
work without host hardware dependencies.
|
|
|
016a62 |
|
|
|
016a62 |
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
016a62 |
Message-Id: <20190628002844.24894-3-ehabkost@redhat.com>
|
|
|
016a62 |
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
|
|
|
016a62 |
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
016a62 |
(cherry picked from commit dac1deae658539e39966e12b12378a28e3dc8441)
|
|
|
016a62 |
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
|
|
|
016a62 |
---
|
|
|
016a62 |
target/i386/cpu.c | 8 ++++++--
|
|
|
016a62 |
target/i386/cpu.h | 6 ++++++
|
|
|
016a62 |
2 files changed, 12 insertions(+), 2 deletions(-)
|
|
|
016a62 |
|
|
|
016a62 |
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
|
|
|
016a62 |
index c69116c..8c1338f 100644
|
|
|
016a62 |
--- a/target/i386/cpu.c
|
|
|
016a62 |
+++ b/target/i386/cpu.c
|
|
|
016a62 |
@@ -5019,8 +5019,11 @@ static int x86_cpu_filter_features(X86CPU *cpu)
|
|
|
016a62 |
uint32_t host_feat =
|
|
|
016a62 |
x86_cpu_get_supported_feature_word(w, false);
|
|
|
016a62 |
uint32_t requested_features = env->features[w];
|
|
|
016a62 |
- env->features[w] &= host_feat;
|
|
|
016a62 |
- cpu->filtered_features[w] = requested_features & ~env->features[w];
|
|
|
016a62 |
+ uint32_t available_features = requested_features & host_feat;
|
|
|
016a62 |
+ if (!cpu->force_features) {
|
|
|
016a62 |
+ env->features[w] = available_features;
|
|
|
016a62 |
+ }
|
|
|
016a62 |
+ cpu->filtered_features[w] = requested_features & ~available_features;
|
|
|
016a62 |
if (cpu->filtered_features[w]) {
|
|
|
016a62 |
rv = 1;
|
|
|
016a62 |
}
|
|
|
016a62 |
@@ -5680,6 +5683,7 @@ static Property x86_cpu_properties[] = {
|
|
|
016a62 |
DEFINE_PROP_BOOL("hv-frequencies", X86CPU, hyperv_frequencies, false),
|
|
|
016a62 |
DEFINE_PROP_BOOL("check", X86CPU, check_cpuid, true),
|
|
|
016a62 |
DEFINE_PROP_BOOL("enforce", X86CPU, enforce_cpuid, false),
|
|
|
016a62 |
+ DEFINE_PROP_BOOL("x-force-features", X86CPU, force_features, false),
|
|
|
016a62 |
DEFINE_PROP_BOOL("kvm", X86CPU, expose_kvm, true),
|
|
|
016a62 |
DEFINE_PROP_UINT32("phys-bits", X86CPU, phys_bits, 0),
|
|
|
016a62 |
DEFINE_PROP_BOOL("host-phys-bits", X86CPU, host_phys_bits, false),
|
|
|
016a62 |
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
|
|
|
016a62 |
index add8b60..1ad54bd 100644
|
|
|
016a62 |
--- a/target/i386/cpu.h
|
|
|
016a62 |
+++ b/target/i386/cpu.h
|
|
|
016a62 |
@@ -1394,6 +1394,12 @@ struct X86CPU {
|
|
|
016a62 |
bool hyperv_frequencies;
|
|
|
016a62 |
bool check_cpuid;
|
|
|
016a62 |
bool enforce_cpuid;
|
|
|
016a62 |
+ /*
|
|
|
016a62 |
+ * Force features to be enabled even if the host doesn't support them.
|
|
|
016a62 |
+ * This is dangerous and should be done only for testing CPUID
|
|
|
016a62 |
+ * compatibility.
|
|
|
016a62 |
+ */
|
|
|
016a62 |
+ bool force_features;
|
|
|
016a62 |
bool expose_kvm;
|
|
|
016a62 |
bool expose_tcg;
|
|
|
016a62 |
bool migratable;
|
|
|
016a62 |
--
|
|
|
016a62 |
1.8.3.1
|
|
|
016a62 |
|