* [PATCH v2] riscv: Add support to allocate gigantic hugepages using CMA
@ 2021-07-30 1:30 Kefeng Wang
2021-07-30 12:09 ` Alex Ghiti
0 siblings, 1 reply; 3+ messages in thread
From: Kefeng Wang @ 2021-07-30 1:30 UTC (permalink / raw)
To: Palmer Dabbelt, linux-riscv
Cc: palmerdabbelt, paul.walmsley, aou, Kefeng Wang, Alexandre Ghiti
commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit
kernel") add support gigantic hugepage support for RV64.
This patch add support to allocate gigantic hugepages using CMA by
specifying the hugetlb_cma= kernel parameter on RV64.
Cc: Alexandre Ghiti <alex@ghiti.fr>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
v2: don't disable hugepage support on RV32.
arch/riscv/mm/init.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index a14bf3910eec..e547e53cddd2 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -19,6 +19,7 @@
#include <linux/set_memory.h>
#include <linux/dma-map-ops.h>
#include <linux/crash_dump.h>
+#include <linux/hugetlb.h>
#include <asm/fixmap.h>
#include <asm/tlbflush.h>
@@ -216,6 +217,8 @@ static void __init setup_bootmem(void)
early_init_fdt_scan_reserved_mem();
dma_contiguous_reserve(dma32_phys_limit);
+ if (IS_ENABLED(CONFIG_64BIT))
+ hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
memblock_allow_resize();
}
--
2.26.2
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v2] riscv: Add support to allocate gigantic hugepages using CMA
2021-07-30 1:30 [PATCH v2] riscv: Add support to allocate gigantic hugepages using CMA Kefeng Wang
@ 2021-07-30 12:09 ` Alex Ghiti
2021-07-30 13:01 ` Kefeng Wang
0 siblings, 1 reply; 3+ messages in thread
From: Alex Ghiti @ 2021-07-30 12:09 UTC (permalink / raw)
To: Kefeng Wang, Palmer Dabbelt, linux-riscv
Cc: palmerdabbelt, paul.walmsley, aou
Le 30/07/2021 à 03:30, Kefeng Wang a écrit :
> commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit
"Commit"
> kernel") add support gigantic hugepage support for RV64.
"adds support for gigantic huge pages for RV64."
>
> This patch add support to allocate gigantic hugepages using CMA by
"adds"
> specifying the hugetlb_cma= kernel parameter on RV64.
>
> Cc: Alexandre Ghiti <alex@ghiti.fr>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
> ---
> v2: don't disable hugepage support on RV32.
>
> arch/riscv/mm/init.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index a14bf3910eec..e547e53cddd2 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -19,6 +19,7 @@
> #include <linux/set_memory.h>
> #include <linux/dma-map-ops.h>
> #include <linux/crash_dump.h>
> +#include <linux/hugetlb.h>
>
> #include <asm/fixmap.h>
> #include <asm/tlbflush.h>
> @@ -216,6 +217,8 @@ static void __init setup_bootmem(void)
>
> early_init_fdt_scan_reserved_mem();
> dma_contiguous_reserve(dma32_phys_limit);
> + if (IS_ENABLED(CONFIG_64BIT))
> + hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
> memblock_allow_resize();
> }
>
>
Apart from the minor nits above, you can add:
Reviewed-by: Alexandre Ghiti <alex@ghiti.fr>
Thanks!
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v2] riscv: Add support to allocate gigantic hugepages using CMA
2021-07-30 12:09 ` Alex Ghiti
@ 2021-07-30 13:01 ` Kefeng Wang
0 siblings, 0 replies; 3+ messages in thread
From: Kefeng Wang @ 2021-07-30 13:01 UTC (permalink / raw)
To: Alex Ghiti, Palmer Dabbelt, linux-riscv; +Cc: palmerdabbelt, paul.walmsley, aou
On 2021/7/30 20:09, Alex Ghiti wrote:
> Le 30/07/2021 à 03:30, Kefeng Wang a écrit :
>> commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit
>
> "Commit"
>
>> kernel") add support gigantic hugepage support for RV64.
>
> "adds support for gigantic huge pages for RV64."
>
>>
>> This patch add support to allocate gigantic hugepages using CMA by
>
> "adds"
>
>> specifying the hugetlb_cma= kernel parameter on RV64.
>>
>> Cc: Alexandre Ghiti <alex@ghiti.fr>
>> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
>> ---
>> v2: don't disable hugepage support on RV32.
>>
>> arch/riscv/mm/init.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
>> index a14bf3910eec..e547e53cddd2 100644
>> --- a/arch/riscv/mm/init.c
>> +++ b/arch/riscv/mm/init.c
>> @@ -19,6 +19,7 @@
>> #include <linux/set_memory.h>
>> #include <linux/dma-map-ops.h>
>> #include <linux/crash_dump.h>
>> +#include <linux/hugetlb.h>
>> #include <asm/fixmap.h>
>> #include <asm/tlbflush.h>
>> @@ -216,6 +217,8 @@ static void __init setup_bootmem(void)
>> early_init_fdt_scan_reserved_mem();
>> dma_contiguous_reserve(dma32_phys_limit);
>> + if (IS_ENABLED(CONFIG_64BIT))
>> + hugetlb_cma_reserve(PUD_SHIFT - PAGE_SHIFT);
>> memblock_allow_resize();
>> }
>>
>
> Apart from the minor nits above, you can add:
>
> Reviewed-by: Alexandre Ghiti <alex@ghiti.fr>
>
Resend with update, thanks :)
> Thanks!
>
> .
>
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-07-30 1:30 [PATCH v2] riscv: Add support to allocate gigantic hugepages using CMA Kefeng Wang
2021-07-30 12:09 ` Alex Ghiti
2021-07-30 13:01 ` Kefeng Wang
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