[PATCH v2] Add epmp to extensions list and rename it to smepmp

Mayuresh Chitale posted 1 patch 6 months, 2 weeks ago
Failed in applying to current master (apply log)
target/riscv/cpu.c         |  8 +++-----
target/riscv/cpu_cfg.h     |  2 +-
target/riscv/csr.c         |  6 +++---
target/riscv/pmp.c         | 12 ++++++------
target/riscv/tcg/tcg-cpu.c |  4 ++--
5 files changed, 15 insertions(+), 17 deletions(-)
[PATCH v2] Add epmp to extensions list and rename it to smepmp
Posted by Mayuresh Chitale 6 months, 2 weeks ago
From: Himanshu Chauhan <hchauhan@ventanamicro.com>

Smepmp is a ratified extension which qemu refers to as epmp.
Rename epmp to smepmp and add it to extension list so that
it is added to the isa string.

Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
---
Changes in v2:
====
- Rebase on latest riscv-to-apply.next
- Remove ePMP version comment

 target/riscv/cpu.c         |  8 +++-----
 target/riscv/cpu_cfg.h     |  2 +-
 target/riscv/csr.c         |  6 +++---
 target/riscv/pmp.c         | 12 ++++++------
 target/riscv/tcg/tcg-cpu.c |  4 ++--
 5 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 2f98ce56e06..dad167833cc 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -133,7 +133,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
     ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
     ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
-    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, epmp),
+    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
     ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
     ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
     ISA_EXT_DATA_ENTRY(sscofpmf, PRIV_VERSION_1_12_0, ext_sscofpmf),
@@ -599,12 +599,11 @@ static void rv32_ibex_cpu_init(Object *obj)
 #ifndef CONFIG_USER_ONLY
     set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
 #endif
-    cpu->cfg.epmp = true;
-
     /* inherited from parent obj via riscv_cpu_init() */
     cpu->cfg.ext_zifencei = true;
     cpu->cfg.ext_zicsr = true;
     cpu->cfg.pmp = true;
+    cpu->cfg.ext_smepmp = true;
 }
 
 static void rv32_imafcu_nommu_cpu_init(Object *obj)
@@ -1257,6 +1256,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
     MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false),
     MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true),
 
+    MULTI_EXT_CFG_BOOL("smepmp", ext_smepmp, false),
     MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false),
     MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true),
     MULTI_EXT_CFG_BOOL("svinval", ext_svinval, false),
@@ -1322,8 +1322,6 @@ const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
 
 /* These are experimental so mark with 'x-' */
 const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
-    /* ePMP 0.9.3 */
-    MULTI_EXT_CFG_BOOL("x-epmp", epmp, false),
     MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false),
     MULTI_EXT_CFG_BOOL("x-ssaia", ext_ssaia, false),
 
diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index 208cac1c7c9..e7ce977189c 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -102,6 +102,7 @@ struct RISCVCPUConfig {
     bool ext_smaia;
     bool ext_ssaia;
     bool ext_sscofpmf;
+    bool ext_smepmp;
     bool rvv_ta_all_1s;
     bool rvv_ma_all_1s;
 
@@ -134,7 +135,6 @@ struct RISCVCPUConfig {
     uint16_t cboz_blocksize;
     bool mmu;
     bool pmp;
-    bool epmp;
     bool debug;
     bool misa_w;
 
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index a5be1c202c3..f4e0a3962f0 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -524,9 +524,9 @@ static RISCVException pmp(CPURISCVState *env, int csrno)
     return RISCV_EXCP_ILLEGAL_INST;
 }
 
-static RISCVException epmp(CPURISCVState *env, int csrno)
+static RISCVException smepmp(CPURISCVState *env, int csrno)
 {
-    if (riscv_cpu_cfg(env)->epmp) {
+    if (riscv_cpu_cfg(env)->ext_smepmp) {
         return RISCV_EXCP_NONE;
     }
 
@@ -4762,7 +4762,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
     [CSR_VSIPH]       = { "vsiph",       aia_hmode32, NULL, NULL, rmw_vsiph },
 
     /* Physical Memory Protection */
-    [CSR_MSECCFG]    = { "mseccfg",  epmp, read_mseccfg, write_mseccfg,
+    [CSR_MSECCFG]    = { "mseccfg", smepmp, read_mseccfg, write_mseccfg,
                          .min_priv_ver = PRIV_VERSION_1_11_0           },
     [CSR_PMPCFG0]    = { "pmpcfg0",   pmp, read_pmpcfg,  write_pmpcfg  },
     [CSR_PMPCFG1]    = { "pmpcfg1",   pmp, read_pmpcfg,  write_pmpcfg  },
diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
index 5e60c26031b..21d2489e27e 100644
--- a/target/riscv/pmp.c
+++ b/target/riscv/pmp.c
@@ -91,7 +91,7 @@ static bool pmp_write_cfg(CPURISCVState *env, uint32_t pmp_index, uint8_t val)
     if (pmp_index < MAX_RISCV_PMPS) {
         bool locked = true;
 
-        if (riscv_cpu_cfg(env)->epmp) {
+        if (riscv_cpu_cfg(env)->ext_smepmp) {
             /* mseccfg.RLB is set */
             if (MSECCFG_RLB_ISSET(env)) {
                 locked = false;
@@ -340,9 +340,9 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
 
         /*
          * Convert the PMP permissions to match the truth table in the
-         * ePMP spec.
+         * Smepmp spec.
          */
-        const uint8_t epmp_operation =
+        const uint8_t smepmp_operation =
             ((env->pmp_state.pmp[i].cfg_reg & PMP_LOCK) >> 4) |
             ((env->pmp_state.pmp[i].cfg_reg & PMP_READ) << 2) |
             (env->pmp_state.pmp[i].cfg_reg & PMP_WRITE) |
@@ -367,7 +367,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
                  * If mseccfg.MML Bit set, do the enhanced pmp priv check
                  */
                 if (mode == PRV_M) {
-                    switch (epmp_operation) {
+                    switch (smepmp_operation) {
                     case 0:
                     case 1:
                     case 4:
@@ -398,7 +398,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
                         g_assert_not_reached();
                     }
                 } else {
-                    switch (epmp_operation) {
+                    switch (smepmp_operation) {
                     case 0:
                     case 8:
                     case 9:
@@ -574,7 +574,7 @@ void mseccfg_csr_write(CPURISCVState *env, target_ulong val)
         }
     }
 
-    if (riscv_cpu_cfg(env)->epmp) {
+    if (riscv_cpu_cfg(env)->ext_smepmp) {
         /* Sticky bits */
         val |= (env->mseccfg & (MSECCFG_MMWP | MSECCFG_MML));
         if ((val ^ env->mseccfg) & (MSECCFG_MMWP | MSECCFG_MML)) {
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index bbce254ee13..fce58d4375a 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -591,12 +591,12 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp)
         return false;
     }
 
-    if (cpu->cfg.epmp && !cpu->cfg.pmp) {
+    if (cpu->cfg.ext_smepmp && !cpu->cfg.pmp) {
         /*
          * Enhanced PMP should only be available
          * on harts with PMP support
          */
-        error_setg(errp, "Invalid configuration: EPMP requires PMP support");
+        error_setg(errp, "Invalid configuration: Smepmp requires PMP support");
         return false;
     }
 
-- 
2.34.1
Re: [PATCH v2] Add epmp to extensions list and rename it to smepmp
Posted by Alistair Francis 6 months, 1 week ago
On Thu, Oct 19, 2023 at 4:56 PM Mayuresh Chitale
<mchitale@ventanamicro.com> wrote:
>
> From: Himanshu Chauhan <hchauhan@ventanamicro.com>
>
> Smepmp is a ratified extension which qemu refers to as epmp.
> Rename epmp to smepmp and add it to extension list so that
> it is added to the isa string.
>
> Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
> Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

Thanks!

Applied to riscv-to-apply.next

Alistair

> ---
> Changes in v2:
> ====
> - Rebase on latest riscv-to-apply.next
> - Remove ePMP version comment
>
>  target/riscv/cpu.c         |  8 +++-----
>  target/riscv/cpu_cfg.h     |  2 +-
>  target/riscv/csr.c         |  6 +++---
>  target/riscv/pmp.c         | 12 ++++++------
>  target/riscv/tcg/tcg-cpu.c |  4 ++--
>  5 files changed, 15 insertions(+), 17 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 2f98ce56e06..dad167833cc 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -133,7 +133,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
>      ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
>      ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
>      ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
> -    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, epmp),
> +    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
>      ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
>      ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
>      ISA_EXT_DATA_ENTRY(sscofpmf, PRIV_VERSION_1_12_0, ext_sscofpmf),
> @@ -599,12 +599,11 @@ static void rv32_ibex_cpu_init(Object *obj)
>  #ifndef CONFIG_USER_ONLY
>      set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
>  #endif
> -    cpu->cfg.epmp = true;
> -
>      /* inherited from parent obj via riscv_cpu_init() */
>      cpu->cfg.ext_zifencei = true;
>      cpu->cfg.ext_zicsr = true;
>      cpu->cfg.pmp = true;
> +    cpu->cfg.ext_smepmp = true;
>  }
>
>  static void rv32_imafcu_nommu_cpu_init(Object *obj)
> @@ -1257,6 +1256,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
>      MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false),
>      MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true),
>
> +    MULTI_EXT_CFG_BOOL("smepmp", ext_smepmp, false),
>      MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false),
>      MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true),
>      MULTI_EXT_CFG_BOOL("svinval", ext_svinval, false),
> @@ -1322,8 +1322,6 @@ const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
>
>  /* These are experimental so mark with 'x-' */
>  const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
> -    /* ePMP 0.9.3 */
> -    MULTI_EXT_CFG_BOOL("x-epmp", epmp, false),
>      MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false),
>      MULTI_EXT_CFG_BOOL("x-ssaia", ext_ssaia, false),
>
> diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
> index 208cac1c7c9..e7ce977189c 100644
> --- a/target/riscv/cpu_cfg.h
> +++ b/target/riscv/cpu_cfg.h
> @@ -102,6 +102,7 @@ struct RISCVCPUConfig {
>      bool ext_smaia;
>      bool ext_ssaia;
>      bool ext_sscofpmf;
> +    bool ext_smepmp;
>      bool rvv_ta_all_1s;
>      bool rvv_ma_all_1s;
>
> @@ -134,7 +135,6 @@ struct RISCVCPUConfig {
>      uint16_t cboz_blocksize;
>      bool mmu;
>      bool pmp;
> -    bool epmp;
>      bool debug;
>      bool misa_w;
>
> diff --git a/target/riscv/csr.c b/target/riscv/csr.c
> index a5be1c202c3..f4e0a3962f0 100644
> --- a/target/riscv/csr.c
> +++ b/target/riscv/csr.c
> @@ -524,9 +524,9 @@ static RISCVException pmp(CPURISCVState *env, int csrno)
>      return RISCV_EXCP_ILLEGAL_INST;
>  }
>
> -static RISCVException epmp(CPURISCVState *env, int csrno)
> +static RISCVException smepmp(CPURISCVState *env, int csrno)
>  {
> -    if (riscv_cpu_cfg(env)->epmp) {
> +    if (riscv_cpu_cfg(env)->ext_smepmp) {
>          return RISCV_EXCP_NONE;
>      }
>
> @@ -4762,7 +4762,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
>      [CSR_VSIPH]       = { "vsiph",       aia_hmode32, NULL, NULL, rmw_vsiph },
>
>      /* Physical Memory Protection */
> -    [CSR_MSECCFG]    = { "mseccfg",  epmp, read_mseccfg, write_mseccfg,
> +    [CSR_MSECCFG]    = { "mseccfg", smepmp, read_mseccfg, write_mseccfg,
>                           .min_priv_ver = PRIV_VERSION_1_11_0           },
>      [CSR_PMPCFG0]    = { "pmpcfg0",   pmp, read_pmpcfg,  write_pmpcfg  },
>      [CSR_PMPCFG1]    = { "pmpcfg1",   pmp, read_pmpcfg,  write_pmpcfg  },
> diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
> index 5e60c26031b..21d2489e27e 100644
> --- a/target/riscv/pmp.c
> +++ b/target/riscv/pmp.c
> @@ -91,7 +91,7 @@ static bool pmp_write_cfg(CPURISCVState *env, uint32_t pmp_index, uint8_t val)
>      if (pmp_index < MAX_RISCV_PMPS) {
>          bool locked = true;
>
> -        if (riscv_cpu_cfg(env)->epmp) {
> +        if (riscv_cpu_cfg(env)->ext_smepmp) {
>              /* mseccfg.RLB is set */
>              if (MSECCFG_RLB_ISSET(env)) {
>                  locked = false;
> @@ -340,9 +340,9 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>
>          /*
>           * Convert the PMP permissions to match the truth table in the
> -         * ePMP spec.
> +         * Smepmp spec.
>           */
> -        const uint8_t epmp_operation =
> +        const uint8_t smepmp_operation =
>              ((env->pmp_state.pmp[i].cfg_reg & PMP_LOCK) >> 4) |
>              ((env->pmp_state.pmp[i].cfg_reg & PMP_READ) << 2) |
>              (env->pmp_state.pmp[i].cfg_reg & PMP_WRITE) |
> @@ -367,7 +367,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>                   * If mseccfg.MML Bit set, do the enhanced pmp priv check
>                   */
>                  if (mode == PRV_M) {
> -                    switch (epmp_operation) {
> +                    switch (smepmp_operation) {
>                      case 0:
>                      case 1:
>                      case 4:
> @@ -398,7 +398,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>                          g_assert_not_reached();
>                      }
>                  } else {
> -                    switch (epmp_operation) {
> +                    switch (smepmp_operation) {
>                      case 0:
>                      case 8:
>                      case 9:
> @@ -574,7 +574,7 @@ void mseccfg_csr_write(CPURISCVState *env, target_ulong val)
>          }
>      }
>
> -    if (riscv_cpu_cfg(env)->epmp) {
> +    if (riscv_cpu_cfg(env)->ext_smepmp) {
>          /* Sticky bits */
>          val |= (env->mseccfg & (MSECCFG_MMWP | MSECCFG_MML));
>          if ((val ^ env->mseccfg) & (MSECCFG_MMWP | MSECCFG_MML)) {
> diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
> index bbce254ee13..fce58d4375a 100644
> --- a/target/riscv/tcg/tcg-cpu.c
> +++ b/target/riscv/tcg/tcg-cpu.c
> @@ -591,12 +591,12 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp)
>          return false;
>      }
>
> -    if (cpu->cfg.epmp && !cpu->cfg.pmp) {
> +    if (cpu->cfg.ext_smepmp && !cpu->cfg.pmp) {
>          /*
>           * Enhanced PMP should only be available
>           * on harts with PMP support
>           */
> -        error_setg(errp, "Invalid configuration: EPMP requires PMP support");
> +        error_setg(errp, "Invalid configuration: Smepmp requires PMP support");
>          return false;
>      }
>
> --
> 2.34.1
>
>
Re: [PATCH v2] Add epmp to extensions list and rename it to smepmp
Posted by Alistair Francis 6 months, 1 week ago
On Thu, Oct 19, 2023 at 4:56 PM Mayuresh Chitale
<mchitale@ventanamicro.com> wrote:
>
> From: Himanshu Chauhan <hchauhan@ventanamicro.com>
>
> Smepmp is a ratified extension which qemu refers to as epmp.
> Rename epmp to smepmp and add it to extension list so that
> it is added to the isa string.
>
> Signed-off-by: Himanshu Chauhan <hchauhan@ventanamicro.com>
> Signed-off-by: Mayuresh Chitale <mchitale@ventanamicro.com>
> Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
> Changes in v2:
> ====
> - Rebase on latest riscv-to-apply.next
> - Remove ePMP version comment
>
>  target/riscv/cpu.c         |  8 +++-----
>  target/riscv/cpu_cfg.h     |  2 +-
>  target/riscv/csr.c         |  6 +++---
>  target/riscv/pmp.c         | 12 ++++++------
>  target/riscv/tcg/tcg-cpu.c |  4 ++--
>  5 files changed, 15 insertions(+), 17 deletions(-)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 2f98ce56e06..dad167833cc 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -133,7 +133,7 @@ const RISCVIsaExtData isa_edata_arr[] = {
>      ISA_EXT_DATA_ENTRY(zhinx, PRIV_VERSION_1_12_0, ext_zhinx),
>      ISA_EXT_DATA_ENTRY(zhinxmin, PRIV_VERSION_1_12_0, ext_zhinxmin),
>      ISA_EXT_DATA_ENTRY(smaia, PRIV_VERSION_1_12_0, ext_smaia),
> -    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, epmp),
> +    ISA_EXT_DATA_ENTRY(smepmp, PRIV_VERSION_1_12_0, ext_smepmp),
>      ISA_EXT_DATA_ENTRY(smstateen, PRIV_VERSION_1_12_0, ext_smstateen),
>      ISA_EXT_DATA_ENTRY(ssaia, PRIV_VERSION_1_12_0, ext_ssaia),
>      ISA_EXT_DATA_ENTRY(sscofpmf, PRIV_VERSION_1_12_0, ext_sscofpmf),
> @@ -599,12 +599,11 @@ static void rv32_ibex_cpu_init(Object *obj)
>  #ifndef CONFIG_USER_ONLY
>      set_satp_mode_max_supported(cpu, VM_1_10_MBARE);
>  #endif
> -    cpu->cfg.epmp = true;
> -
>      /* inherited from parent obj via riscv_cpu_init() */
>      cpu->cfg.ext_zifencei = true;
>      cpu->cfg.ext_zicsr = true;
>      cpu->cfg.pmp = true;
> +    cpu->cfg.ext_smepmp = true;
>  }
>
>  static void rv32_imafcu_nommu_cpu_init(Object *obj)
> @@ -1257,6 +1256,7 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
>      MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false),
>      MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true),
>
> +    MULTI_EXT_CFG_BOOL("smepmp", ext_smepmp, false),
>      MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false),
>      MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true),
>      MULTI_EXT_CFG_BOOL("svinval", ext_svinval, false),
> @@ -1322,8 +1322,6 @@ const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = {
>
>  /* These are experimental so mark with 'x-' */
>  const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = {
> -    /* ePMP 0.9.3 */
> -    MULTI_EXT_CFG_BOOL("x-epmp", epmp, false),
>      MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false),
>      MULTI_EXT_CFG_BOOL("x-ssaia", ext_ssaia, false),
>
> diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
> index 208cac1c7c9..e7ce977189c 100644
> --- a/target/riscv/cpu_cfg.h
> +++ b/target/riscv/cpu_cfg.h
> @@ -102,6 +102,7 @@ struct RISCVCPUConfig {
>      bool ext_smaia;
>      bool ext_ssaia;
>      bool ext_sscofpmf;
> +    bool ext_smepmp;
>      bool rvv_ta_all_1s;
>      bool rvv_ma_all_1s;
>
> @@ -134,7 +135,6 @@ struct RISCVCPUConfig {
>      uint16_t cboz_blocksize;
>      bool mmu;
>      bool pmp;
> -    bool epmp;
>      bool debug;
>      bool misa_w;
>
> diff --git a/target/riscv/csr.c b/target/riscv/csr.c
> index a5be1c202c3..f4e0a3962f0 100644
> --- a/target/riscv/csr.c
> +++ b/target/riscv/csr.c
> @@ -524,9 +524,9 @@ static RISCVException pmp(CPURISCVState *env, int csrno)
>      return RISCV_EXCP_ILLEGAL_INST;
>  }
>
> -static RISCVException epmp(CPURISCVState *env, int csrno)
> +static RISCVException smepmp(CPURISCVState *env, int csrno)
>  {
> -    if (riscv_cpu_cfg(env)->epmp) {
> +    if (riscv_cpu_cfg(env)->ext_smepmp) {
>          return RISCV_EXCP_NONE;
>      }
>
> @@ -4762,7 +4762,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = {
>      [CSR_VSIPH]       = { "vsiph",       aia_hmode32, NULL, NULL, rmw_vsiph },
>
>      /* Physical Memory Protection */
> -    [CSR_MSECCFG]    = { "mseccfg",  epmp, read_mseccfg, write_mseccfg,
> +    [CSR_MSECCFG]    = { "mseccfg", smepmp, read_mseccfg, write_mseccfg,
>                           .min_priv_ver = PRIV_VERSION_1_11_0           },
>      [CSR_PMPCFG0]    = { "pmpcfg0",   pmp, read_pmpcfg,  write_pmpcfg  },
>      [CSR_PMPCFG1]    = { "pmpcfg1",   pmp, read_pmpcfg,  write_pmpcfg  },
> diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
> index 5e60c26031b..21d2489e27e 100644
> --- a/target/riscv/pmp.c
> +++ b/target/riscv/pmp.c
> @@ -91,7 +91,7 @@ static bool pmp_write_cfg(CPURISCVState *env, uint32_t pmp_index, uint8_t val)
>      if (pmp_index < MAX_RISCV_PMPS) {
>          bool locked = true;
>
> -        if (riscv_cpu_cfg(env)->epmp) {
> +        if (riscv_cpu_cfg(env)->ext_smepmp) {
>              /* mseccfg.RLB is set */
>              if (MSECCFG_RLB_ISSET(env)) {
>                  locked = false;
> @@ -340,9 +340,9 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>
>          /*
>           * Convert the PMP permissions to match the truth table in the
> -         * ePMP spec.
> +         * Smepmp spec.
>           */
> -        const uint8_t epmp_operation =
> +        const uint8_t smepmp_operation =
>              ((env->pmp_state.pmp[i].cfg_reg & PMP_LOCK) >> 4) |
>              ((env->pmp_state.pmp[i].cfg_reg & PMP_READ) << 2) |
>              (env->pmp_state.pmp[i].cfg_reg & PMP_WRITE) |
> @@ -367,7 +367,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>                   * If mseccfg.MML Bit set, do the enhanced pmp priv check
>                   */
>                  if (mode == PRV_M) {
> -                    switch (epmp_operation) {
> +                    switch (smepmp_operation) {
>                      case 0:
>                      case 1:
>                      case 4:
> @@ -398,7 +398,7 @@ bool pmp_hart_has_privs(CPURISCVState *env, target_ulong addr,
>                          g_assert_not_reached();
>                      }
>                  } else {
> -                    switch (epmp_operation) {
> +                    switch (smepmp_operation) {
>                      case 0:
>                      case 8:
>                      case 9:
> @@ -574,7 +574,7 @@ void mseccfg_csr_write(CPURISCVState *env, target_ulong val)
>          }
>      }
>
> -    if (riscv_cpu_cfg(env)->epmp) {
> +    if (riscv_cpu_cfg(env)->ext_smepmp) {
>          /* Sticky bits */
>          val |= (env->mseccfg & (MSECCFG_MMWP | MSECCFG_MML));
>          if ((val ^ env->mseccfg) & (MSECCFG_MMWP | MSECCFG_MML)) {
> diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
> index bbce254ee13..fce58d4375a 100644
> --- a/target/riscv/tcg/tcg-cpu.c
> +++ b/target/riscv/tcg/tcg-cpu.c
> @@ -591,12 +591,12 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp)
>          return false;
>      }
>
> -    if (cpu->cfg.epmp && !cpu->cfg.pmp) {
> +    if (cpu->cfg.ext_smepmp && !cpu->cfg.pmp) {
>          /*
>           * Enhanced PMP should only be available
>           * on harts with PMP support
>           */
> -        error_setg(errp, "Invalid configuration: EPMP requires PMP support");
> +        error_setg(errp, "Invalid configuration: Smepmp requires PMP support");
>          return false;
>      }
>
> --
> 2.34.1
>
>