Commit 197bd237 authored by Daniel Henrique Barboza's avatar Daniel Henrique Barboza Committed by Anup Patel
Browse files

RISC-V: KVM: set 'vlenb' in kvm_riscv_vcpu_alloc_vector_context() 



'vlenb', added to riscv_v_ext_state by commit c35f3aa3 ("RISC-V:
vector: export VLENB csr in __sc_riscv_v_state"), isn't being
initialized in guest_context. If we export 'vlenb' as a KVM CSR,
something we want to do in the next patch, it'll always return 0.

Set 'vlenb' to riscv_v_size/32.

Signed-off-by: default avatarDaniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent bdf6aa32

arch/riscv/kvm/vcpu_vector.c

+1 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ int kvm_riscv_vcpu_alloc_vector_context(struct kvm_vcpu *vcpu, 
	cntx->vector.datap = kmalloc(riscv_v_vsize, GFP_KERNEL);

	if (!cntx->vector.datap)

		return -ENOMEM;

	cntx->vector.vlenb = riscv_v_vsize / 32;



	vcpu->arch.host_context.vector.datap = kzalloc(riscv_v_vsize, GFP_KERNEL);

	if (!vcpu->arch.host_context.vector.datap)