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lib: Add RISC-V hypervisor v0.6.1 support

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To support RISC-V hypervisor v0.6.1, we:
1. Don't need to explicitly forward WFI traps from VS/VU-mode
2. Have to delegate virtual instruction trap to HS-mode
3. Have to update trap redirection for changes in HSTATUS CSR

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-05-28 08:37:42 +05:30
committed by Anup Patel
parent 51f0e4a053
commit 1b8c0128f1
4 changed files with 17 additions and 19 deletions
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1
lib/sbi/sbi_hart.c
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@@ -110,6 +110,7 @@ static int delegate_traps(struct sbi_scratch *scratch, u32 hartid)
exceptions |= (1U << CAUSE_SUPERVISOR_ECALL);
exceptions |= (1U << CAUSE_FETCH_GUEST_PAGE_FAULT);
exceptions |= (1U << CAUSE_LOAD_GUEST_PAGE_FAULT);
exceptions |= (1U << CAUSE_VIRTUAL_INST_FAULT);
exceptions |= (1U << CAUSE_STORE_GUEST_PAGE_FAULT);
}