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[PATCH v1 27/36] target/riscv: Disable guest FP support based on virtual
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From: |
Alistair Francis |
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Subject: |
[PATCH v1 27/36] target/riscv: Disable guest FP support based on virtual status |
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Date: |
Mon, 9 Dec 2019 10:11:51 -0800 |
When the Hypervisor extension is in use we only enable floating point
support when both status and vsstatus have enabled floating point
support.
Signed-off-by: Alistair Francis <address@hidden>
Reviewed-by: Palmer Dabbelt <address@hidden>
---
target/riscv/cpu_helper.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c
index 2c6d2bc3a3..2040fc0208 100644
--- a/target/riscv/cpu_helper.c
+++ b/target/riscv/cpu_helper.c
@@ -99,6 +99,9 @@ bool riscv_cpu_exec_interrupt(CPUState *cs, int
interrupt_request)
bool riscv_cpu_fp_enabled(CPURISCVState *env)
{
if (*env->mstatus & MSTATUS_FS) {
+ if (riscv_cpu_virt_enabled(env) && !(env->vsstatus & MSTATUS_FS)) {
+ return false;
+ }
return true;
}
--
2.24.0
- [PATCH v1 18/36] target/riscv: Extend the MIE CSR to support virtulisation, (continued)
- [PATCH v1 18/36] target/riscv: Extend the MIE CSR to support virtulisation, Alistair Francis, 2019/12/09
- [PATCH v1 19/36] target/riscv: Extend the SIP CSR to support virtulisation, Alistair Francis, 2019/12/09
- [PATCH v1 20/36] target/riscv: Add support for virtual interrupt setting, Alistair Francis, 2019/12/09
- [PATCH v1 21/36] target/ricsv: Flush the TLB on virtulisation mode changes, Alistair Francis, 2019/12/09
- [PATCH v1 22/36] target/riscv: Generate illegal instruction on WFI when V=1, Alistair Francis, 2019/12/09
- [PATCH v1 23/36] target/riscv: Add hypvervisor trap support, Alistair Francis, 2019/12/09
- [PATCH v1 24/36] target/riscv: Add Hypervisor trap return support, Alistair Francis, 2019/12/09
- [PATCH v1 25/36] target/riscv: Add hfence instructions, Alistair Francis, 2019/12/09
- [PATCH v1 26/36] target/riscv: Remove the hret instruction, Alistair Francis, 2019/12/09
- [PATCH v1 28/36] target/riscv: Mark both sstatus and vsstatus as dirty, Alistair Francis, 2019/12/09
- [PATCH v1 27/36] target/riscv: Disable guest FP support based on virtual status,
Alistair Francis <=
- [PATCH v1 29/36] target/riscv: Respect MPRV and SPRV for floating point ops, Alistair Francis, 2019/12/09
- [PATCH v1 30/36] target/riscv: Allow specifying MMU stage, Alistair Francis, 2019/12/09
- [PATCH v1 32/36] target/riscv: Raise the new execptions when 2nd stage translation fails, Alistair Francis, 2019/12/09
- [PATCH v1 31/36] target/riscv: Implement second stage MMU, Alistair Francis, 2019/12/09
- [PATCH v1 33/36] target/riscv: Set htval and mtval2 on execptions, Alistair Francis, 2019/12/09
- [PATCH v1 34/36] target/riscv: Add support for the 32-bit MSTATUSH CSR, Alistair Francis, 2019/12/09
- [PATCH v1 35/36] target/riscv: Add the MSTATUS_MPV_ISSET helper macro, Alistair Francis, 2019/12/09
- [PATCH v1 36/36] target/riscv: Allow enabling the Hypervisor extension, Alistair Francis, 2019/12/09
- Re: [PATCH v1 00/36] Add RISC-V Hypervisor Extension v0.5, Aleksandar Markovic, 2019/12/09