[PATCH v2 1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[PATCH v2 1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Haibo Xu]

Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
To ensure all the values were properly initialized, switch to initialize
all of them to NUMA_NO_NODE.

Fixes: eabd9db64ea8 ("ACPI: RISCV: Add NUMA support based on SRAT and SLIT")
Reported-by: Andrew Jones <ajones@ventanamicro.com>
Suggested-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
---
 arch/riscv/kernel/acpi_numa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/acpi_numa.c b/arch/riscv/kernel/acpi_numa.c
index 0231482d6946..ff95aeebee3e 100644
--- a/arch/riscv/kernel/acpi_numa.c
+++ b/arch/riscv/kernel/acpi_numa.c
@@ -28,7 +28,7 @@
 
 #include <asm/numa.h>
 
-static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
+static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };
 
 int __init acpi_numa_get_nid(unsigned int cpu)
 {
-- 
2.34.1

Re: [PATCH v2 1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Hanjun Guo]

On 2024/8/5 11:30, Haibo Xu wrote:
> Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> To ensure all the values were properly initialized, switch to initialize
> all of them to NUMA_NO_NODE.
> 
> Fixes: eabd9db64ea8 ("ACPI: RISCV: Add NUMA support based on SRAT and SLIT")
> Reported-by: Andrew Jones <ajones@ventanamicro.com>
> Suggested-by: Andrew Jones <ajones@ventanamicro.com>
> Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>   arch/riscv/kernel/acpi_numa.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/riscv/kernel/acpi_numa.c b/arch/riscv/kernel/acpi_numa.c
> index 0231482d6946..ff95aeebee3e 100644
> --- a/arch/riscv/kernel/acpi_numa.c
> +++ b/arch/riscv/kernel/acpi_numa.c
> @@ -28,7 +28,7 @@
>   
>   #include <asm/numa.h>
>   
> -static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
> +static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };
>   
>   int __init acpi_numa_get_nid(unsigned int cpu)
>   {

Reviewed-by: Hanjun Guo <guohanjun@huawei.com>

Thanks
Hanjun

[PATCH v2 2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Haibo Xu]

Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
To ensure all the values were properly initialized, switch to initialize
all of them to NUMA_NO_NODE.

Fixes: e18962491696 ("arm64: numa: rework ACPI NUMA initialization")
Reported-by: Andrew Jones <ajones@ventanamicro.com>
Suggested-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
---
 arch/arm64/kernel/acpi_numa.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
index 0c036a9a3c33..2465f291c7e1 100644
--- a/arch/arm64/kernel/acpi_numa.c
+++ b/arch/arm64/kernel/acpi_numa.c
@@ -27,7 +27,7 @@
 
 #include <asm/numa.h>
 
-static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
+static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };
 
 int __init acpi_numa_get_nid(unsigned int cpu)
 {
-- 
2.34.1

Re: [PATCH v2 2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Hanjun Guo]

On 2024/8/5 11:30, Haibo Xu wrote:
> Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> To ensure all the values were properly initialized, switch to initialize
> all of them to NUMA_NO_NODE.
> 
> Fixes: e18962491696 ("arm64: numa: rework ACPI NUMA initialization")
> Reported-by: Andrew Jones <ajones@ventanamicro.com>
> Suggested-by: Andrew Jones <ajones@ventanamicro.com>
> Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>   arch/arm64/kernel/acpi_numa.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
> index 0c036a9a3c33..2465f291c7e1 100644
> --- a/arch/arm64/kernel/acpi_numa.c
> +++ b/arch/arm64/kernel/acpi_numa.c
> @@ -27,7 +27,7 @@
>   
>   #include <asm/numa.h>
>   
> -static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
> +static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };
>   
>   int __init acpi_numa_get_nid(unsigned int cpu)
>   {

Reviewed-by: Hanjun Guo <guohanjun@huawei.com>

Thanks
Hanjun

Re: [PATCH v2 2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Catalin Marinas]

On Mon, Aug 05, 2024 at 11:30:24AM +0800, Haibo Xu wrote:
> Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> To ensure all the values were properly initialized, switch to initialize
> all of them to NUMA_NO_NODE.
> 
> Fixes: e18962491696 ("arm64: numa: rework ACPI NUMA initialization")
> Reported-by: Andrew Jones <ajones@ventanamicro.com>
> Suggested-by: Andrew Jones <ajones@ventanamicro.com>
> Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>  arch/arm64/kernel/acpi_numa.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
> index 0c036a9a3c33..2465f291c7e1 100644
> --- a/arch/arm64/kernel/acpi_numa.c
> +++ b/arch/arm64/kernel/acpi_numa.c
> @@ -27,7 +27,7 @@
>  
>  #include <asm/numa.h>
>  
> -static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
> +static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };

Acked-by: Catalin Marinas <catalin.marinas@arm.com>

The patch makes sense but is there any issue currently without it?
Trying to assess whether it needs a stable backport.

-- 
Catalin

Re: [PATCH v2 2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Lorenzo Pieralisi]

On Mon, Aug 05, 2024 at 04:21:34PM +0100, Catalin Marinas wrote:
> On Mon, Aug 05, 2024 at 11:30:24AM +0800, Haibo Xu wrote:
> > Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> > To ensure all the values were properly initialized, switch to initialize
> > all of them to NUMA_NO_NODE.
> > 
> > Fixes: e18962491696 ("arm64: numa: rework ACPI NUMA initialization")
> > Reported-by: Andrew Jones <ajones@ventanamicro.com>
> > Suggested-by: Andrew Jones <ajones@ventanamicro.com>
> > Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> > Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
> > Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> > Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> > ---
> >  arch/arm64/kernel/acpi_numa.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
> > index 0c036a9a3c33..2465f291c7e1 100644
> > --- a/arch/arm64/kernel/acpi_numa.c
> > +++ b/arch/arm64/kernel/acpi_numa.c
> > @@ -27,7 +27,7 @@
> >  
> >  #include <asm/numa.h>
> >  
> > -static int acpi_early_node_map[NR_CPUS] __initdata = { NUMA_NO_NODE };
> > +static int acpi_early_node_map[NR_CPUS] __initdata = { [0 ... NR_CPUS - 1] = NUMA_NO_NODE };

Bah, silly me, sorry.

> Acked-by: Catalin Marinas <catalin.marinas@arm.com>
> 
> The patch makes sense but is there any issue currently without it?

I suspect there might be - a cpu associated with NUMA node 0 when it is
actually unspecified in ACPI tables (well, probably not even a real
world bug - I don't know, that's why it was not caught earlier I
believe) but still.

> Trying to assess whether it needs a stable backport.

Whether that's a real bug or not depends on deployed ACPI firmware
tables; if all cores have a proximity domain assigned in the
respective SRAT entries this patch is irrelevant but
technically it is a bug to fix, yes.

Backporting would make sense, it should be innocuous.

Acked-by: Lorenzo Pieralisi <lpieralisi@kernel.org>

Re: (subset) [PATCH v2 1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[Catalin Marinas]

On Mon, 05 Aug 2024 11:30:23 +0800, Haibo Xu wrote:
> Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> To ensure all the values were properly initialized, switch to initialize
> all of them to NUMA_NO_NODE.
> 
> 

Applied to arm64 (for-next/fixes), thanks!

[2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
      https://git.kernel.org/arm64/c/a21dcf0ea856

-- 
Catalin

Re: [PATCH v2 1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE

[patchwork-bot+linux-riscv]

Hello:

This series was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Mon,  5 Aug 2024 11:30:23 +0800 you wrote:
> Currently, only acpi_early_node_map[0] was initialized to NUMA_NO_NODE.
> To ensure all the values were properly initialized, switch to initialize
> all of them to NUMA_NO_NODE.
> 
> Fixes: eabd9db64ea8 ("ACPI: RISCV: Add NUMA support based on SRAT and SLIT")
> Reported-by: Andrew Jones <ajones@ventanamicro.com>
> Suggested-by: Andrew Jones <ajones@ventanamicro.com>
> Signed-off-by: Haibo Xu <haibo1.xu@intel.com>
> Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
> Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
> 
> [...]

Here is the summary with links:
  - [v2,1/2] RISC-V: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
    https://git.kernel.org/riscv/c/a445699879f9
  - [v2,2/2] arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE
    https://git.kernel.org/riscv/c/b8c09eb34465

You are awesome, thank you!
-- 
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