| Message ID | 20210730124841.178455-1-wangkefeng.wang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v3] riscv: Add support to allocate gigantic hugepages using CMA | expand |
On Fri, 30 Jul 2021 05:48:41 PDT (-0700), wangkefeng.wang@huawei.com wrote: > Commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit > kernel") adds support gigantic hugepage support for RV64. > > This patch adds support to allocate gigantic hugepages using CMA by > specifying the hugetlb_cma= kernel parameter on RV64. > > Cc: Alexandre Ghiti <alex@ghiti.fr> > Reviewed-by: Alexandre Ghiti <alex@ghiti.fr> > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > --- > v3: Update changelog and add Reviewed-by. > 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(); > } Thanks. This is on for-next. I cleaned up the commit text a bit.
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(); }
Commit 9e953cda5cdf ("riscv: Introduce huge page support for32/64bit kernel") adds support gigantic hugepage support for RV64. This patch adds support to allocate gigantic hugepages using CMA by specifying the hugetlb_cma= kernel parameter on RV64. Cc: Alexandre Ghiti <alex@ghiti.fr> Reviewed-by: Alexandre Ghiti <alex@ghiti.fr> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> --- v3: Update changelog and add Reviewed-by. arch/riscv/mm/init.c | 3 +++ 1 file changed, 3 insertions(+)