2008年1月8日 · Note: once "x2APIC mode" is enabled it can't be disabled by software, and if there's more than 255 CPUs the BIOS is meant to enable x2APIC mode before the OS boots. …

2019年6月23日 · QEMU virtualizes x2APIC mode when using KVM (-enable-kvm option). I think, your host CPU has to support x2APIC (which is about guaranteed these days) for this to work. …

2008年11月25日 · Intel x2APIC spec wrote: 2.4.2 Logical Destination Register To enable cluster ID assignment in a fashion that matches the system topology characteristics and to enable …

2021年11月12日 · I'm now working on the initializing code of x2apic, but my qemu gives me this warning: qemu-system-x86_64: warning: TCG doesn't support requested feature: …

2016年10月13日 · I've checked qemu's source, and I've found a stupid patch that silently disables x2apic when irqchip is not used, so I've tried Code: Select all qemu-system-x86_64 -m 32 -d …

2008年11月9日 · The Processor X2APIC structure (type 9) is very similar to the processor local APIC structure (type 0). When using the X2APIC interrupt model, logical processors with APIC …

2007年10月15日 · johnsa wrote:My local apic code supports both xapic and x2apic mode. All my emulators only run xapic mode while my real machines run x2apic. If I leave the init in xapic all …

2019年6月23日 · - furthermore, for x2apic: here and here for example. - and for tsc-deadline msr here. But kvm emulation also works for all of these, so if the OP can do kvm, they definitely …

2013年12月18日 · I compiled from source code v2.6 under that 'x2apic' is included by default，and i use the default pre-defined cpu: cpu: model = core2_penryn_t9600 ... The …

2022年7月22日 · I added experimental support for long mode (proudly supporting 4GB linear and 4GB physical address space) as it seems odd that 32bit Linux doesn't enable x2apic on this …