Documentation: Add ARM64 for reserving ZONE_MOVABLE

[PATCH] Documentation: Add ARM64 for reserving ZONE_MOVABLE

Posted by Dev Jain 1 year, 8 months ago

kernelcore and movablecore kernel command line works for ARM64. Update
the Documentation to reflect the same.

Signed-off-by: Dev Jain <dev.jain@arm.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index b600df82669d..7282d6057e32 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -2544,7 +2544,7 @@
 
 	keepinitrd	[HW,ARM] See retain_initrd.
 
-	kernelcore=	[KNL,X86,IA-64,PPC,EARLY]
+	kernelcore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]
 			Format: nn[KMGTPE] | nn% | "mirror"
 			This parameter specifies the amount of memory usable by
 			the kernel for non-movable allocations.  The requested
@@ -3612,7 +3612,7 @@
 	mousedev.yres=	[MOUSE] Vertical screen resolution, used for devices
 			reporting absolute coordinates, such as tablets
 
-	movablecore=	[KNL,X86,IA-64,PPC,EARLY]
+	movablecore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]
 			Format: nn[KMGTPE] | nn%
 			This parameter is the complement to kernelcore=, it
 			specifies the amount of memory used for migratable
-- 
2.34.1

Re: [PATCH] Documentation: Add ARM64 for reserving ZONE_MOVABLE

Posted by Ryan Roberts 1 year, 8 months ago

On 04/06/2024 06:28, Dev Jain wrote:
> kernelcore and movablecore kernel command line works for ARM64. Update
> the Documentation to reflect the same.
> 
> Signed-off-by: Dev Jain <dev.jain@arm.com>
> ---
>  Documentation/admin-guide/kernel-parameters.txt | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
> index b600df82669d..7282d6057e32 100644
> --- a/Documentation/admin-guide/kernel-parameters.txt
> +++ b/Documentation/admin-guide/kernel-parameters.txt
> @@ -2544,7 +2544,7 @@
>  
>  	keepinitrd	[HW,ARM] See retain_initrd.
>  
> -	kernelcore=	[KNL,X86,IA-64,PPC,EARLY]
> +	kernelcore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]

Given these are both arch-agnostic parameters, wouldn't the correct change be to
remove all the arch-specific labels, i.e. [KNL,EARLY]? In fact, wasn't IA-64
removed from the kernel?

>  			Format: nn[KMGTPE] | nn% | "mirror"
>  			This parameter specifies the amount of memory usable by
>  			the kernel for non-movable allocations.  The requested
> @@ -3612,7 +3612,7 @@
>  	mousedev.yres=	[MOUSE] Vertical screen resolution, used for devices
>  			reporting absolute coordinates, such as tablets
>  
> -	movablecore=	[KNL,X86,IA-64,PPC,EARLY]
> +	movablecore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]
>  			Format: nn[KMGTPE] | nn%
>  			This parameter is the complement to kernelcore=, it
>  			specifies the amount of memory used for migratable

Re: [PATCH] Documentation: Add ARM64 for reserving ZONE_MOVABLE

Posted by Dev Jain 1 year, 8 months ago

On 6/7/24 17:04, Ryan Roberts wrote:
> On 04/06/2024 06:28, Dev Jain wrote:
>> kernelcore and movablecore kernel command line works for ARM64. Update
>> the Documentation to reflect the same.
>>
>> Signed-off-by: Dev Jain <dev.jain@arm.com>
>> ---
>>   Documentation/admin-guide/kernel-parameters.txt | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
>> index b600df82669d..7282d6057e32 100644
>> --- a/Documentation/admin-guide/kernel-parameters.txt
>> +++ b/Documentation/admin-guide/kernel-parameters.txt
>> @@ -2544,7 +2544,7 @@
>>   
>>   	keepinitrd	[HW,ARM] See retain_initrd.
>>   
>> -	kernelcore=	[KNL,X86,IA-64,PPC,EARLY]
>> +	kernelcore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]
> Given these are both arch-agnostic parameters, wouldn't the correct change be to
> remove all the arch-specific labels, i.e. [KNL,EARLY]? In fact, wasn't IA-64
> removed from the kernel?


Indeed, the handling of these parameters completely resides in

generic mm; I'll send a separate patch and CC Andrew. And yes,

IA-64 was removed, but still has some mentions remaining

throughout the tree :)

>
>>   			Format: nn[KMGTPE] | nn% | "mirror"
>>   			This parameter specifies the amount of memory usable by
>>   			the kernel for non-movable allocations.  The requested
>> @@ -3612,7 +3612,7 @@
>>   	mousedev.yres=	[MOUSE] Vertical screen resolution, used for devices
>>   			reporting absolute coordinates, such as tablets
>>   
>> -	movablecore=	[KNL,X86,IA-64,PPC,EARLY]
>> +	movablecore=	[KNL,X86,IA-64,PPC,ARM64,EARLY]
>>   			Format: nn[KMGTPE] | nn%
>>   			This parameter is the complement to kernelcore=, it
>>   			specifies the amount of memory used for migratable