| Message ID | 20220206091835.1244296-7-atishp@rivosinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Privilege version update | expand |
On Sun, Feb 6, 2022 at 7:51 PM Atish Patra <atishp@rivosinc.com> wrote: > > Virt machine uses privileged specification version 1.12 now. > All other machine continue to use the default one defined for that > machine unless changed to 1.12 by the user explicitly. > > Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Alistair > --- > target/riscv/cpu.c | 8 +++++--- > target/riscv/csr.c | 5 +++++ > 2 files changed, 10 insertions(+), 3 deletions(-) > > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c > index 2668f9c358b2..1c72dfffdc61 100644 > --- a/target/riscv/cpu.c > +++ b/target/riscv/cpu.c > @@ -150,7 +150,7 @@ static void riscv_any_cpu_init(Object *obj) > #elif defined(TARGET_RISCV64) > set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); > #endif > - set_priv_version(env, PRIV_VERSION_1_11_0); > + set_priv_version(env, PRIV_VERSION_1_12_0); > } > > #if defined(TARGET_RISCV64) > @@ -474,7 +474,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) > } > > if (cpu->cfg.priv_spec) { > - if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { > + if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) { > + priv_version = PRIV_VERSION_1_12_0; > + } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { > priv_version = PRIV_VERSION_1_11_0; > } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { > priv_version = PRIV_VERSION_1_10_0; > @@ -489,7 +491,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) > if (priv_version) { > set_priv_version(env, priv_version); > } else if (!env->priv_ver) { > - set_priv_version(env, PRIV_VERSION_1_11_0); > + set_priv_version(env, PRIV_VERSION_1_12_0); > } > > if (cpu->cfg.mmu) { > diff --git a/target/riscv/csr.c b/target/riscv/csr.c > index ff7e36596447..1c70c19cf9bd 100644 > --- a/target/riscv/csr.c > +++ b/target/riscv/csr.c > @@ -2886,6 +2886,7 @@ static inline RISCVException riscv_csrrw_check(CPURISCVState *env, > { > /* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */ > int read_only = get_field(csrno, 0xC00) == 3; > + int csr_min_priv = csr_ops[csrno].min_priv_ver; > #if !defined(CONFIG_USER_ONLY) > int effective_priv = env->priv; > > @@ -2918,6 +2919,10 @@ static inline RISCVException riscv_csrrw_check(CPURISCVState *env, > return RISCV_EXCP_ILLEGAL_INST; > } > > + if (env->priv_ver < csr_min_priv) { > + return RISCV_EXCP_ILLEGAL_INST; > + } > + > return csr_ops[csrno].predicate(env, csrno); > } > > -- > 2.30.2 > >
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 2668f9c358b2..1c72dfffdc61 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -150,7 +150,7 @@ static void riscv_any_cpu_init(Object *obj) #elif defined(TARGET_RISCV64) set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); #endif - set_priv_version(env, PRIV_VERSION_1_11_0); + set_priv_version(env, PRIV_VERSION_1_12_0); } #if defined(TARGET_RISCV64) @@ -474,7 +474,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) } if (cpu->cfg.priv_spec) { - if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { + if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) { + priv_version = PRIV_VERSION_1_12_0; + } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { priv_version = PRIV_VERSION_1_11_0; } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { priv_version = PRIV_VERSION_1_10_0; @@ -489,7 +491,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) if (priv_version) { set_priv_version(env, priv_version); } else if (!env->priv_ver) { - set_priv_version(env, PRIV_VERSION_1_11_0); + set_priv_version(env, PRIV_VERSION_1_12_0); } if (cpu->cfg.mmu) { diff --git a/target/riscv/csr.c b/target/riscv/csr.c index ff7e36596447..1c70c19cf9bd 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -2886,6 +2886,7 @@ static inline RISCVException riscv_csrrw_check(CPURISCVState *env, { /* check privileges and return RISCV_EXCP_ILLEGAL_INST if check fails */ int read_only = get_field(csrno, 0xC00) == 3; + int csr_min_priv = csr_ops[csrno].min_priv_ver; #if !defined(CONFIG_USER_ONLY) int effective_priv = env->priv; @@ -2918,6 +2919,10 @@ static inline RISCVException riscv_csrrw_check(CPURISCVState *env, return RISCV_EXCP_ILLEGAL_INST; } + if (env->priv_ver < csr_min_priv) { + return RISCV_EXCP_ILLEGAL_INST; + } + return csr_ops[csrno].predicate(env, csrno); }
Virt machine uses privileged specification version 1.12 now. All other machine continue to use the default one defined for that machine unless changed to 1.12 by the user explicitly. Signed-off-by: Atish Patra <atishp@rivosinc.com> --- target/riscv/cpu.c | 8 +++++--- target/riscv/csr.c | 5 +++++ 2 files changed, 10 insertions(+), 3 deletions(-)