diff options
| author | Anup Patel <anup.patel@oss.qualcomm.com> | 2026-01-20 13:29:49 +0530 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2026-03-06 11:20:30 +0530 |
| commit | c61ec3e8cc5d46fa269434a9ec16ca36d362e0dd (patch) | |
| tree | 6df0f8c7453902690c259b13dbaf0cb50315b0ba | |
| parent | 24433b2b5c74a9fee7baa3a97a1947446868901d (diff) | |
RISC-V: KVM: Check host Ssaia extension when creating AIA irqchip
The KVM user-space may create KVM AIA irqchip before checking
VCPU Ssaia extension availability so KVM AIA irqchip must fail
when host does not have Ssaia extension.
Fixes: 89d01306e34d ("RISC-V: KVM: Implement device interface for AIA irqchip")
Signed-off-by: Anup Patel <anup.patel@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260120080013.2153519-4-anup.patel@oss.qualcomm.com
Signed-off-by: Anup Patel <anup@brainfault.org>
| -rw-r--r-- | arch/riscv/kvm/aia_device.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/riscv/kvm/aia_device.c b/arch/riscv/kvm/aia_device.c index 9a45c85239fe..49c71d3cdb00 100644 --- a/arch/riscv/kvm/aia_device.c +++ b/arch/riscv/kvm/aia_device.c @@ -11,6 +11,7 @@ #include <linux/irqchip/riscv-imsic.h> #include <linux/kvm_host.h> #include <linux/uaccess.h> +#include <linux/cpufeature.h> static int aia_create(struct kvm_device *dev, u32 type) { @@ -22,6 +23,9 @@ static int aia_create(struct kvm_device *dev, u32 type) if (irqchip_in_kernel(kvm)) return -EEXIST; + if (!riscv_isa_extension_available(NULL, SSAIA)) + return -ENODEV; + ret = -EBUSY; if (kvm_trylock_all_vcpus(kvm)) return ret; |