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20:If4DwOYsrDB3+FaqMQsLb3JNkAk+gdki87lb+/xw9WFvt0FO5HeThGGhh1bzlpomw7vhNa0kFkjWXbJtdYafrUQKCGsIpDzrQb3Z0DO8fTLT2Q/1O6a9uOzDdY5FyPc32jIIET0NDk/wLZ64+JvxVLyn6y62O8+AIGqEUZjaFhGoBMXVrTHxQf3DWIXq6sMvlfRkUK9Ad/fisuxPsLpyNXfDpjeU/mm0yhIQCBCnY/qgmTLts1dWPNjgVLsV4xsB X-MS-Office365-Filtering-Correlation-Id: 392f95cf-38e3-4e87-c5af-08d59f39144e X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Apr 2018 23:16:23.5139 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 392f95cf-38e3-4e87-c5af-08d59f39144e X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1767 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 104.47.33.65 Subject: [Qemu-devel] [PATCH v6 4/9] i386: Add new property to control cache info X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geoff@hostfission.com, babu.moger@amd.com, kash@tripleback.net, qemu-devel@nongnu.org, kvm@vger.kernel.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This will be used to control the cache information. By default new information will be displayed. If user passes "-cpu legacy-cache" then older information will be displayed even if the hardware supports new information. It will be "on" for machine type "pc-q35-2.10" for compatibility. Signed-off-by: Babu Moger Tested-by: Geoffrey McRae --- include/hw/i386/pc.h | 4 ++++ target/i386/cpu.c | 1 + target/i386/cpu.h | 5 +++++ 3 files changed, 10 insertions(+) diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index ffee841..d904a3c 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -327,6 +327,10 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); .driver = "q35-pcihost",\ .property = "x-pci-hole64-fix",\ .value = "off",\ + },{\ + .driver = TYPE_X86_CPU,\ + .property = "legacy-cache",\ + .value = "on",\ }, #define PC_COMPAT_2_9 \ diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 3b2a19a..1659320 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5129,6 +5129,7 @@ static Property x86_cpu_properties[] = { false), DEFINE_PROP_BOOL("vmware-cpuid-freq", X86CPU, vmware_cpuid_freq, true), DEFINE_PROP_BOOL("tcg-cpuid", X86CPU, expose_tcg, true), + DEFINE_PROP_BOOL("legacy-cache", X86CPU, legacy_cache, false), /* * From "Requirements for Implementing the Microsoft diff --git a/target/i386/cpu.h b/target/i386/cpu.h index aff8396..fe8edf6 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1394,6 +1394,11 @@ struct X86CPU { */ bool enable_l3_cache; + /* Compatibility bits for old machine types. + * If true present the old cache topology information + */ + bool legacy_cache; + /* Compatibility bits for old machine types: */ bool enable_cpuid_0xb;