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2022-07-29RISC-V: KVM: Improve ISA extension by using a bitmapAtish Patra1-4/+4
Currently, the every vcpu only stores the ISA extensions in a unsigned long which is not scalable as number of extensions will continue to grow. Using a bitmap allows the ISA extension to support any number of extensions. The CONFIG one reg interface implementation is modified to support the bitmap as well. But it is meant only for base extensions. Thus, the first element of the bitmap array is sufficient for that interface. In the future, all the new multi-letter extensions must use the ISA_EXT one reg interface that allows enabling/disabling any extension now. Signed-off-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Anup Patel <anup@brainfault.org>
2021-10-31RISC-V: KVM: Factor-out FP virtualization into separate sourcesAnup Patel1-0/+59
The timer and SBI virtualization is already in separate sources. In future, we will have vector and AIA virtualization also added as separate sources. To align with above described modularity, we factor-out FP virtualization into separate sources. Signed-off-by: Anup Patel <anup.patel@wdc.com> Message-Id: <20211026170136.2147619-3-anup.patel@wdc.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>