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| author | Bibo Mao <maobibo@loongson.cn> | 2024-11-13 09:18:27 +0100 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-11-13 09:18:27 +0100 |
| commit | 9899b8201025d00b23aee143594a30c55cc4cc35 (patch) | |
| tree | 24d9334595f8be9a8ce95e0efa7c960fac0a0a04 /arch | |
| parent | LoongArch: KVM: Add irqfd support (diff) | |
| download | linux-9899b8201025d00b23aee143594a30c55cc4cc35.tar.xz linux-9899b8201025d00b23aee143594a30c55cc4cc35.zip | |
irqchip/loongson-eiointc: Add virt extension support
Interrupts can be routed to maximal four virtual CPUs with real HW
EIOINTC interrupt controller model, since interrupt routing is encoded
with CPU bitmap and EIOINTC node combined method. Here add the EIOINTC
virt extension support so that interrupts can be routed to 256 vCPUs in
virtual machine mode. CPU bitmap is replaced with normal encoding and
EIOINTC node type is removed, so there are 8 bits for cpu selection, at
most 256 vCPUs are supported for interrupt routing.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Co-developed-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/loongarch/include/asm/irq.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/irq.h b/arch/loongarch/include/asm/irq.h index 9c2ca785faa9..a0ca84da8541 100644 --- a/arch/loongarch/include/asm/irq.h +++ b/arch/loongarch/include/asm/irq.h @@ -65,6 +65,7 @@ extern struct acpi_vector_group pch_group[MAX_IO_PICS]; extern struct acpi_vector_group msi_group[MAX_IO_PICS]; #define CORES_PER_EIO_NODE 4 +#define CORES_PER_VEIO_NODE 256 #define LOONGSON_CPU_UART0_VEC 10 /* CPU UART0 */ #define LOONGSON_CPU_THSENS_VEC 14 /* CPU Thsens */ |