RISC-V: KVM: Introduce range based local HFENCE functions

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Various  __kvm_riscv_hfence_xyz() functions implemented in the
kvm/tlb.S are equivalent to corresponding HFENCE.GVMA instructions
and we don't have range based local HFENCE functions.

This patch provides complete set of local HFENCE functions which
supports range based TLB invalidation and supports HFENCE.VVMA
based functions. This is also a preparatory patch for upcoming
Svinval support in KVM RISC-V.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>

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Anup Patel 2022-05-09 10:43:52 +05:30 • committed by Anup Patel

parent c7fa3c48de

commit 2415e46e3a

6 changed files with 237 additions and 83 deletions

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25

arch/riscv/include/asm/kvm_host.h

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4

arch/riscv/kvm/mmu.c

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74

arch/riscv/kvm/tlb.S

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213

arch/riscv/kvm/tlb.c

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2

arch/riscv/kvm/vcpu.c

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2

arch/riscv/kvm/vmid.c

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