Huacai Chen f21db3090d KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support ... This patch add Loongson-3 Virtual IPI interrupt support in the kernel. The current implementation of IPI emulation in QEMU is based on GIC for MIPS, but Loongson-3 doesn't use GIC. Furthermore, IPI emulation in QEMU is too expensive for performance (because of too many context switches between Host and Guest). With current solution, the IPI delay may even cause RCU stall warnings in a multi-core Guest. So, we design a faster solution that emulate IPI interrupt in kernel (only used by Loongson-3 now). Reviewed-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> Signed-off-by: Huacai Chen <chenhc@lemote.com> Co-developed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Message-Id: <1590220602-3547-11-git-send-email-chenhc@lemote.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-06-04 13:50:39 -04:00
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asm	KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support	2020-06-04 13:50:39 -04:00
uapi/asm	MIPS: Expose Loongson CPUCFG availability via HWCAP	2020-05-31 10:53:56 +02:00