Re: [PATCH v8 0/6] LoongArch: Add pv ipi support on LoongArch VM

On 2024/5/6 上午9:45, Huacai Chen wrote: Hi, Bibo, I have done an off-list discussion with some KVM experts, and they think user-space have its right to know PV features, so cpucfg solution is acceptable. And I applied this series with some modifications at https://git.kernel.org/pub/scm/linux

Re: [PATCH v8 0/6] LoongArch: Add pv ipi support on LoongArch VM

Hi, Bibo, I have done an off-list discussion with some KVM experts, and they think user-space have its right to know PV features, so cpucfg solution is acceptable. And I applied this series with some modifications at https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/lo

[PATCH v8 0/6] LoongArch: Add pv ipi support on LoongArch VM

On physical machine, ipi HW uses IOCSR registers, however there is trap into hypervisor when vcpu accesses IOCSR registers if system is in VM mode. SWI is a interrupt mechanism like SGI on ARM, software can send interrupt to CPU, only that on LoongArch SWI can only be sent to local CPU now. So SWI