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[PATCH v3 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension

Alexey Baturo posted 6 patches 2 years, 1 month ago
Maintainers: Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
There is a newer version of this series
[PATCH v3 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension
Posted by Alexey Baturo 2 years, 1 month ago 
From: Alexey Baturo <baturo.alexey@gmail.com>

Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com>
---
 target/riscv/cpu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 1e6571ce99..13389ddc55 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -153,6 +153,9 @@ const RISCVIsaExtData isa_edata_arr[] = {
     ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
     ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
     ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
+    ISA_EXT_DATA_ENTRY(ssnpm, PRIV_VERSION_1_12_0, ext_ssnpm),
+    ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_12_0, ext_smnpm),
+    ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_12_0, ext_smmpm),
     ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
     ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
     ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
@@ -1337,6 +1340,11 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
 
     MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
 
+    /* Zjpm v0.8 extensions */
+    MULTI_EXT_CFG_BOOL("ssnpm", ext_ssnpm, false),
+    MULTI_EXT_CFG_BOOL("smnpm", ext_smnpm, false),
+    MULTI_EXT_CFG_BOOL("smmpm", ext_smmpm, false),
+
     MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
     MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
     MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
-- 
2.34.1
Re: [PATCH v3 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension
Posted by Alistair Francis 2 years, 1 month ago 
On Thu, Jan 4, 2024 at 4:58 AM Alexey Baturo <baturo.alexey@gmail.com> wrote:
>
> From: Alexey Baturo <baturo.alexey@gmail.com>
>
> Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com>
> ---
>  target/riscv/cpu.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 1e6571ce99..13389ddc55 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -153,6 +153,9 @@ const RISCVIsaExtData isa_edata_arr[] = {
>      ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
>      ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
>      ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
> +    ISA_EXT_DATA_ENTRY(ssnpm, PRIV_VERSION_1_12_0, ext_ssnpm),
> +    ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_12_0, ext_smnpm),
> +    ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_12_0, ext_smmpm),
>      ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
>      ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
>      ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
> @@ -1337,6 +1340,11 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
>
>      MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
>
> +    /* Zjpm v0.8 extensions */
> +    MULTI_EXT_CFG_BOOL("ssnpm", ext_ssnpm, false),
> +    MULTI_EXT_CFG_BOOL("smnpm", ext_smnpm, false),
> +    MULTI_EXT_CFG_BOOL("smmpm", ext_smmpm, false),

What happens to the existing J property?


Alistair

> +
>      MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
>      MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
>      MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
> --
> 2.34.1
>
>
Re: [PATCH v3 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension
Posted by Alexey Baturo 2 years, 1 month ago 
I might be wrong here, but right now J in MISA is unused.
I think the J-letter extension is still a thing, but current extensions
like Zjpm and Zjid follow the Z ext scheme.
Do you think it should be removed?


пт, 5 янв. 2024 г. в 08:28, Alistair Francis <alistair23@gmail.com>:

> On Thu, Jan 4, 2024 at 4:58 AM Alexey Baturo <baturo.alexey@gmail.com>
> wrote:
> >
> > From: Alexey Baturo <baturo.alexey@gmail.com>
> >
> > Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com>
> > ---
> >  target/riscv/cpu.c | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> > index 1e6571ce99..13389ddc55 100644
> > --- a/target/riscv/cpu.c
> > +++ b/target/riscv/cpu.c
> > @@ -153,6 +153,9 @@ const RISCVIsaExtData isa_edata_arr[] = {
> >      ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
> >      ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
> >      ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
> > +    ISA_EXT_DATA_ENTRY(ssnpm, PRIV_VERSION_1_12_0, ext_ssnpm),
> > +    ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_12_0, ext_smnpm),
> > +    ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_12_0, ext_smmpm),
> >      ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
> >      ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
> >      ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
> > @@ -1337,6 +1340,11 @@ const RISCVCPUMultiExtConfig
> riscv_cpu_extensions[] = {
> >
> >      MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
> >
> > +    /* Zjpm v0.8 extensions */
> > +    MULTI_EXT_CFG_BOOL("ssnpm", ext_ssnpm, false),
> > +    MULTI_EXT_CFG_BOOL("smnpm", ext_smnpm, false),
> > +    MULTI_EXT_CFG_BOOL("smmpm", ext_smmpm, false),
>
> What happens to the existing J property?
>
>
> Alistair
>
> > +
> >      MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
> >      MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
> >      MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
> > --
> > 2.34.1
> >
> >
>
Re: [PATCH v3 6/6] target/riscv: Enable updates for pointer masking variables and thus enable pointer masking extension
Posted by Alistair Francis 2 years, 1 month ago 
On Fri, Jan 5, 2024 at 5:23 PM Alexey Baturo <baturo.alexey@gmail.com> wrote:
>
> I might be wrong here, but right now J in MISA is unused.

I suspect you are right, it would be worth confirming though.

> I think the J-letter extension is still a thing, but current extensions like Zjpm and Zjid follow the Z ext scheme.
> Do you think it should be removed?

It sounds like it should be removed then

Alistair

>
>
> пт, 5 янв. 2024 г. в 08:28, Alistair Francis <alistair23@gmail.com>:
>>
>> On Thu, Jan 4, 2024 at 4:58 AM Alexey Baturo <baturo.alexey@gmail.com> wrote:
>> >
>> > From: Alexey Baturo <baturo.alexey@gmail.com>
>> >
>> > Signed-off-by: Alexey Baturo <baturo.alexey@gmail.com>
>> > ---
>> >  target/riscv/cpu.c | 8 ++++++++
>> >  1 file changed, 8 insertions(+)
>> >
>> > diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
>> > index 1e6571ce99..13389ddc55 100644
>> > --- a/target/riscv/cpu.c
>> > +++ b/target/riscv/cpu.c
>> > @@ -153,6 +153,9 @@ const RISCVIsaExtData isa_edata_arr[] = {
>> >      ISA_EXT_DATA_ENTRY(svinval, PRIV_VERSION_1_12_0, ext_svinval),
>> >      ISA_EXT_DATA_ENTRY(svnapot, PRIV_VERSION_1_12_0, ext_svnapot),
>> >      ISA_EXT_DATA_ENTRY(svpbmt, PRIV_VERSION_1_12_0, ext_svpbmt),
>> > +    ISA_EXT_DATA_ENTRY(ssnpm, PRIV_VERSION_1_12_0, ext_ssnpm),
>> > +    ISA_EXT_DATA_ENTRY(smnpm, PRIV_VERSION_1_12_0, ext_smnpm),
>> > +    ISA_EXT_DATA_ENTRY(smmpm, PRIV_VERSION_1_12_0, ext_smmpm),
>> >      ISA_EXT_DATA_ENTRY(xtheadba, PRIV_VERSION_1_11_0, ext_xtheadba),
>> >      ISA_EXT_DATA_ENTRY(xtheadbb, PRIV_VERSION_1_11_0, ext_xtheadbb),
>> >      ISA_EXT_DATA_ENTRY(xtheadbs, PRIV_VERSION_1_11_0, ext_xtheadbs),
>> > @@ -1337,6 +1340,11 @@ const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = {
>> >
>> >      MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false),
>> >
>> > +    /* Zjpm v0.8 extensions */
>> > +    MULTI_EXT_CFG_BOOL("ssnpm", ext_ssnpm, false),
>> > +    MULTI_EXT_CFG_BOOL("smnpm", ext_smnpm, false),
>> > +    MULTI_EXT_CFG_BOOL("smmpm", ext_smmpm, false),
>>
>> What happens to the existing J property?
>>
>>
>> Alistair
>>
>> > +
>> >      MULTI_EXT_CFG_BOOL("zca", ext_zca, false),
>> >      MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false),
>> >      MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false),
>> > --
>> > 2.34.1
>> >
>> >

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