ppc: add native hash and radix support for POWER9

[Qemu-devel] [PATCH 02/12] target/ppci/mmu: Use LPCR:HR to chose radix vs. hash translation

Posted by Cédric Le Goater 6 years, 11 months ago

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

Now that LPCR:HR is set properly for SPAPR, use it for deciding
the translation type, which also works for bare metal

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 target/ppc/mmu-book3s-v3.h | 14 +++++++++-----
 target/ppc/mmu-book3s-v3.c | 11 ++++++++++-
 target/ppc/mmu_helper.c    |  9 ++-------
 3 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/target/ppc/mmu-book3s-v3.h b/target/ppc/mmu-book3s-v3.h
index fdf80987d7b2..41b77158622a 100644
--- a/target/ppc/mmu-book3s-v3.h
+++ b/target/ppc/mmu-book3s-v3.h
@@ -43,14 +43,18 @@ static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
     return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
 }
 
-static inline bool ppc64_radix_guest(PowerPCCPU *cpu)
+/*
+ * The LPCR:HR bit is a shortcut that avoids having to
+ * dig out the partition table in the fast path. This is
+ * also how the HW uses it.
+ */
+static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
 {
-    PPCVirtualHypervisorClass *vhc =
-        PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
-
-    return !!(vhc->get_patbe(cpu->vhyp) & PATBE1_GR);
+    return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
 }
 
+hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr);
+
 int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
                               int mmu_idx);
 
diff --git a/target/ppc/mmu-book3s-v3.c b/target/ppc/mmu-book3s-v3.c
index b60df4408f3b..a174e7efc57c 100644
--- a/target/ppc/mmu-book3s-v3.c
+++ b/target/ppc/mmu-book3s-v3.c
@@ -26,9 +26,18 @@
 int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
                               int mmu_idx)
 {
-    if (ppc64_radix_guest(cpu)) { /* Guest uses radix */
+    if (ppc64_v3_radix(cpu)) { /* Guest uses radix */
         return ppc_radix64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
     } else { /* Guest uses hash */
         return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
     }
 }
+
+hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr)
+{
+    if (ppc64_v3_radix(cpu)) {
+        return ppc_radix64_get_phys_page_debug(cpu, eaddr);
+    } else {
+        return ppc_hash64_get_phys_page_debug(cpu, eaddr);
+    }
+}
diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index cefed34da4f2..ae81ee18ae95 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -1342,7 +1342,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
         dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
         break;
     case POWERPC_MMU_3_00:
-        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
+        if (ppc64_v3_radix(ppc_env_get_cpu(env))) {
             /* TODO - Unsupported */
         } else {
             dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
@@ -1497,12 +1497,7 @@ hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     case POWERPC_MMU_2_07:
         return ppc_hash64_get_phys_page_debug(cpu, addr);
     case POWERPC_MMU_3_00:
-        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
-            return ppc_radix64_get_phys_page_debug(cpu, addr);
-        } else {
-            return ppc_hash64_get_phys_page_debug(cpu, addr);
-        }
-        break;
+        return ppc64_v3_get_phys_page_debug(cpu, addr);
 #endif
 
     case POWERPC_MMU_32B:
-- 
2.20.1

Re: [Qemu-devel] [PATCH 02/12] target/ppci/mmu: Use LPCR:HR to chose radix vs. hash translation

Posted by David Gibson 6 years, 11 months ago

On Fri, Feb 15, 2019 at 06:00:19PM +0100, Cédric Le Goater wrote:
> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> 
> Now that LPCR:HR is set properly for SPAPR, use it for deciding
> the translation type, which also works for bare metal
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

> ---
>  target/ppc/mmu-book3s-v3.h | 14 +++++++++-----
>  target/ppc/mmu-book3s-v3.c | 11 ++++++++++-
>  target/ppc/mmu_helper.c    |  9 ++-------
>  3 files changed, 21 insertions(+), 13 deletions(-)
> 
> diff --git a/target/ppc/mmu-book3s-v3.h b/target/ppc/mmu-book3s-v3.h
> index fdf80987d7b2..41b77158622a 100644
> --- a/target/ppc/mmu-book3s-v3.h
> +++ b/target/ppc/mmu-book3s-v3.h
> @@ -43,14 +43,18 @@ static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
>      return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
>  }
>  
> -static inline bool ppc64_radix_guest(PowerPCCPU *cpu)
> +/*
> + * The LPCR:HR bit is a shortcut that avoids having to
> + * dig out the partition table in the fast path. This is
> + * also how the HW uses it.
> + */
> +static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
>  {
> -    PPCVirtualHypervisorClass *vhc =
> -        PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
> -
> -    return !!(vhc->get_patbe(cpu->vhyp) & PATBE1_GR);
> +    return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
>  }
>  
> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr);
> +
>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
>                                int mmu_idx);
>  
> diff --git a/target/ppc/mmu-book3s-v3.c b/target/ppc/mmu-book3s-v3.c
> index b60df4408f3b..a174e7efc57c 100644
> --- a/target/ppc/mmu-book3s-v3.c
> +++ b/target/ppc/mmu-book3s-v3.c
> @@ -26,9 +26,18 @@
>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
>                                int mmu_idx)
>  {
> -    if (ppc64_radix_guest(cpu)) { /* Guest uses radix */
> +    if (ppc64_v3_radix(cpu)) { /* Guest uses radix */
>          return ppc_radix64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
>      } else { /* Guest uses hash */
>          return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
>      }
>  }
> +
> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr)
> +{
> +    if (ppc64_v3_radix(cpu)) {
> +        return ppc_radix64_get_phys_page_debug(cpu, eaddr);
> +    } else {
> +        return ppc_hash64_get_phys_page_debug(cpu, eaddr);
> +    }
> +}
> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
> index cefed34da4f2..ae81ee18ae95 100644
> --- a/target/ppc/mmu_helper.c
> +++ b/target/ppc/mmu_helper.c
> @@ -1342,7 +1342,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
>          dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
>          break;
>      case POWERPC_MMU_3_00:
> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
> +        if (ppc64_v3_radix(ppc_env_get_cpu(env))) {
>              /* TODO - Unsupported */
>          } else {
>              dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
> @@ -1497,12 +1497,7 @@ hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
>      case POWERPC_MMU_2_07:
>          return ppc_hash64_get_phys_page_debug(cpu, addr);
>      case POWERPC_MMU_3_00:
> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
> -            return ppc_radix64_get_phys_page_debug(cpu, addr);
> -        } else {
> -            return ppc_hash64_get_phys_page_debug(cpu, addr);
> -        }
> -        break;
> +        return ppc64_v3_get_phys_page_debug(cpu, addr);
>  #endif
>  
>      case POWERPC_MMU_32B:

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

Re: [Qemu-devel] [PATCH 02/12] target/ppci/mmu: Use LPCR:HR to chose radix vs. hash translation

Posted by Philippe Mathieu-Daudé 6 years, 11 months ago

On 2/18/19 7:47 AM, David Gibson wrote:
> On Fri, Feb 15, 2019 at 06:00:19PM +0100, Cédric Le Goater wrote:
>> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>>
>> Now that LPCR:HR is set properly for SPAPR, use it for deciding
>> the translation type, which also works for bare metal

"ppci" -> "ppc" in patch title.

>>
>> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
>> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> 
> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> 
>> ---
>>  target/ppc/mmu-book3s-v3.h | 14 +++++++++-----
>>  target/ppc/mmu-book3s-v3.c | 11 ++++++++++-
>>  target/ppc/mmu_helper.c    |  9 ++-------
>>  3 files changed, 21 insertions(+), 13 deletions(-)
>>
>> diff --git a/target/ppc/mmu-book3s-v3.h b/target/ppc/mmu-book3s-v3.h
>> index fdf80987d7b2..41b77158622a 100644
>> --- a/target/ppc/mmu-book3s-v3.h
>> +++ b/target/ppc/mmu-book3s-v3.h
>> @@ -43,14 +43,18 @@ static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
>>      return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
>>  }
>>  
>> -static inline bool ppc64_radix_guest(PowerPCCPU *cpu)
>> +/*
>> + * The LPCR:HR bit is a shortcut that avoids having to
>> + * dig out the partition table in the fast path. This is
>> + * also how the HW uses it.
>> + */
>> +static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
>>  {
>> -    PPCVirtualHypervisorClass *vhc =
>> -        PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
>> -
>> -    return !!(vhc->get_patbe(cpu->vhyp) & PATBE1_GR);
>> +    return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
>>  }
>>  
>> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr);
>> +
>>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
>>                                int mmu_idx);
>>  
>> diff --git a/target/ppc/mmu-book3s-v3.c b/target/ppc/mmu-book3s-v3.c
>> index b60df4408f3b..a174e7efc57c 100644
>> --- a/target/ppc/mmu-book3s-v3.c
>> +++ b/target/ppc/mmu-book3s-v3.c
>> @@ -26,9 +26,18 @@
>>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
>>                                int mmu_idx)
>>  {
>> -    if (ppc64_radix_guest(cpu)) { /* Guest uses radix */
>> +    if (ppc64_v3_radix(cpu)) { /* Guest uses radix */
>>          return ppc_radix64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
>>      } else { /* Guest uses hash */
>>          return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
>>      }
>>  }
>> +
>> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr)
>> +{
>> +    if (ppc64_v3_radix(cpu)) {
>> +        return ppc_radix64_get_phys_page_debug(cpu, eaddr);
>> +    } else {
>> +        return ppc_hash64_get_phys_page_debug(cpu, eaddr);
>> +    }
>> +}
>> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
>> index cefed34da4f2..ae81ee18ae95 100644
>> --- a/target/ppc/mmu_helper.c
>> +++ b/target/ppc/mmu_helper.c
>> @@ -1342,7 +1342,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
>>          dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
>>          break;
>>      case POWERPC_MMU_3_00:
>> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
>> +        if (ppc64_v3_radix(ppc_env_get_cpu(env))) {
>>              /* TODO - Unsupported */
>>          } else {
>>              dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
>> @@ -1497,12 +1497,7 @@ hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
>>      case POWERPC_MMU_2_07:
>>          return ppc_hash64_get_phys_page_debug(cpu, addr);
>>      case POWERPC_MMU_3_00:
>> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
>> -            return ppc_radix64_get_phys_page_debug(cpu, addr);
>> -        } else {
>> -            return ppc_hash64_get_phys_page_debug(cpu, addr);
>> -        }
>> -        break;
>> +        return ppc64_v3_get_phys_page_debug(cpu, addr);
>>  #endif
>>  
>>      case POWERPC_MMU_32B:
>

Re: [Qemu-devel] [PATCH 02/12] target/ppci/mmu: Use LPCR:HR to chose radix vs. hash translation

Posted by David Gibson 6 years, 11 months ago

On Mon, Feb 18, 2019 at 10:20:43PM +0100, Philippe Mathieu-Daudé wrote:
> On 2/18/19 7:47 AM, David Gibson wrote:
> > On Fri, Feb 15, 2019 at 06:00:19PM +0100, Cédric Le Goater wrote:
> >> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >>
> >> Now that LPCR:HR is set properly for SPAPR, use it for deciding
> >> the translation type, which also works for bare metal
> 
> "ppci" -> "ppc" in patch title.

Fixed up inline.

> 
> >>
> >> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> >> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> > 
> > Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> > 
> >> ---
> >>  target/ppc/mmu-book3s-v3.h | 14 +++++++++-----
> >>  target/ppc/mmu-book3s-v3.c | 11 ++++++++++-
> >>  target/ppc/mmu_helper.c    |  9 ++-------
> >>  3 files changed, 21 insertions(+), 13 deletions(-)
> >>
> >> diff --git a/target/ppc/mmu-book3s-v3.h b/target/ppc/mmu-book3s-v3.h
> >> index fdf80987d7b2..41b77158622a 100644
> >> --- a/target/ppc/mmu-book3s-v3.h
> >> +++ b/target/ppc/mmu-book3s-v3.h
> >> @@ -43,14 +43,18 @@ static inline bool ppc64_use_proc_tbl(PowerPCCPU *cpu)
> >>      return !!(cpu->env.spr[SPR_LPCR] & LPCR_UPRT);
> >>  }
> >>  
> >> -static inline bool ppc64_radix_guest(PowerPCCPU *cpu)
> >> +/*
> >> + * The LPCR:HR bit is a shortcut that avoids having to
> >> + * dig out the partition table in the fast path. This is
> >> + * also how the HW uses it.
> >> + */
> >> +static inline bool ppc64_v3_radix(PowerPCCPU *cpu)
> >>  {
> >> -    PPCVirtualHypervisorClass *vhc =
> >> -        PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
> >> -
> >> -    return !!(vhc->get_patbe(cpu->vhyp) & PATBE1_GR);
> >> +    return !!(cpu->env.spr[SPR_LPCR] & LPCR_HR);
> >>  }
> >>  
> >> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr);
> >> +
> >>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
> >>                                int mmu_idx);
> >>  
> >> diff --git a/target/ppc/mmu-book3s-v3.c b/target/ppc/mmu-book3s-v3.c
> >> index b60df4408f3b..a174e7efc57c 100644
> >> --- a/target/ppc/mmu-book3s-v3.c
> >> +++ b/target/ppc/mmu-book3s-v3.c
> >> @@ -26,9 +26,18 @@
> >>  int ppc64_v3_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
> >>                                int mmu_idx)
> >>  {
> >> -    if (ppc64_radix_guest(cpu)) { /* Guest uses radix */
> >> +    if (ppc64_v3_radix(cpu)) { /* Guest uses radix */
> >>          return ppc_radix64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
> >>      } else { /* Guest uses hash */
> >>          return ppc_hash64_handle_mmu_fault(cpu, eaddr, rwx, mmu_idx);
> >>      }
> >>  }
> >> +
> >> +hwaddr ppc64_v3_get_phys_page_debug(PowerPCCPU *cpu, vaddr eaddr)
> >> +{
> >> +    if (ppc64_v3_radix(cpu)) {
> >> +        return ppc_radix64_get_phys_page_debug(cpu, eaddr);
> >> +    } else {
> >> +        return ppc_hash64_get_phys_page_debug(cpu, eaddr);
> >> +    }
> >> +}
> >> diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
> >> index cefed34da4f2..ae81ee18ae95 100644
> >> --- a/target/ppc/mmu_helper.c
> >> +++ b/target/ppc/mmu_helper.c
> >> @@ -1342,7 +1342,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
> >>          dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
> >>          break;
> >>      case POWERPC_MMU_3_00:
> >> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
> >> +        if (ppc64_v3_radix(ppc_env_get_cpu(env))) {
> >>              /* TODO - Unsupported */
> >>          } else {
> >>              dump_slb(f, cpu_fprintf, ppc_env_get_cpu(env));
> >> @@ -1497,12 +1497,7 @@ hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
> >>      case POWERPC_MMU_2_07:
> >>          return ppc_hash64_get_phys_page_debug(cpu, addr);
> >>      case POWERPC_MMU_3_00:
> >> -        if (ppc64_radix_guest(ppc_env_get_cpu(env))) {
> >> -            return ppc_radix64_get_phys_page_debug(cpu, addr);
> >> -        } else {
> >> -            return ppc_hash64_get_phys_page_debug(cpu, addr);
> >> -        }
> >> -        break;
> >> +        return ppc64_v3_get_phys_page_debug(cpu, addr);
> >>  #endif
> >>  
> >>      case POWERPC_MMU_32B:
> > 
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson