| Message ID | 20210730013017.50651-1-wangkefeng.wang@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] riscv: Add support to allocate gigantic hugepages using CMA | expand |
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!
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! > > . >
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") 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(+)