* Re: [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map [not found] <20240428125505.434962-1-skseofh@gmail.com> @ 2024-05-01 4:59 ` kernel test robot 2024-05-01 13:23 ` [PATCH v2] " skseofh 0 siblings, 1 reply; 4+ messages in thread From: kernel test robot @ 2024-05-01 4:59 UTC (permalink / raw To: skseofh, robh, saravanak, rppt Cc: llvm, oe-kbuild-all, devicetree, linux-kernel, Daero Lee Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on linus/master v6.9-rc6 next-20240430] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/skseofh-gmail-com/of-of_reserved_mem-clean-up-reserved-memory-with-no-map/20240430-144643 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20240428125505.434962-1-skseofh%40gmail.com patch subject: [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map config: arm-defconfig (https://download.01.org/0day-ci/archive/20240501/202405011208.qsZQwChO-lkp@intel.com/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240501/202405011208.qsZQwChO-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202405011208.qsZQwChO-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/of/of_reserved_mem.c:95:4: warning: non-void function 'early_init_dt_reserve_memory' should return a value [-Wreturn-type] return; ^ 1 warning generated. vim +/early_init_dt_reserve_memory +95 drivers/of/of_reserved_mem.c 80 81 static int __init early_init_dt_reserve_memory(phys_addr_t base, 82 phys_addr_t size, bool nomap) 83 { 84 if (nomap) { 85 /* 86 * If the memory is already reserved (by another region), we 87 * should not allow it to be marked nomap, but don't worry 88 * if the region isn't memory as it won't be mapped. 89 */ 90 if (memblock_overlaps_region(&memblock.memory, base, size) && 91 memblock_is_region_reserved(base, size)) 92 return -EBUSY; 93 94 if (memblock_mark_nomap(base, size)) > 95 return; 96 } 97 return memblock_reserve(base, size); 98 } 99 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki ^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH v2] of: of_reserved_mem: clean-up reserved memory with no-map 2024-05-01 4:59 ` [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map kernel test robot @ 2024-05-01 13:23 ` skseofh 2024-05-22 14:31 ` Rob Herring 0 siblings, 1 reply; 4+ messages in thread From: skseofh @ 2024-05-01 13:23 UTC (permalink / raw To: lkp Cc: daero_le.lee, devicetree, linux-kernel, llvm, oe-kbuild-all, robh, rppt, saravanak, skseofh From: Daero Lee <daero_le.lee@samsung.com> In early_init_dt_reserve_memory we only add memory w/o no-map flag to memblock.reserved. But we need to add memory w/ no-map flag to memblock.reserved, because NOMAP and memblock.reserved are semantically different. Signed-off-by: Daero Lee <daero_le.lee@samsung.com> --- drivers/of/of_reserved_mem.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 8236ecae2953..d00a17a9cebc 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -81,6 +81,7 @@ static void __init fdt_reserved_mem_save_node(unsigned long node, const char *un static int __init early_init_dt_reserve_memory(phys_addr_t base, phys_addr_t size, bool nomap) { + int err = 0; if (nomap) { /* * If the memory is already reserved (by another region), we @@ -91,7 +92,10 @@ static int __init early_init_dt_reserve_memory(phys_addr_t base, memblock_is_region_reserved(base, size)) return -EBUSY; - return memblock_mark_nomap(base, size); + + err = memblock_mark_nomap(base, size); + if (err) + return err; } return memblock_reserve(base, size); } -- 2.25.1 ^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v2] of: of_reserved_mem: clean-up reserved memory with no-map 2024-05-01 13:23 ` [PATCH v2] " skseofh @ 2024-05-22 14:31 ` Rob Herring 2024-05-24 9:32 ` DaeRo Lee 0 siblings, 1 reply; 4+ messages in thread From: Rob Herring @ 2024-05-22 14:31 UTC (permalink / raw To: skseofh Cc: lkp, daero_le.lee, devicetree, linux-kernel, llvm, oe-kbuild-all, rppt, saravanak On Wed, May 01, 2024 at 10:23:59PM +0900, skseofh@gmail.com wrote: > From: Daero Lee <daero_le.lee@samsung.com> > > In early_init_dt_reserve_memory we only add memory w/o no-map flag to > memblock.reserved. But we need to add memory w/ no-map flag to > memblock.reserved, because NOMAP and memblock.reserved are semantically > different. > > Signed-off-by: Daero Lee <daero_le.lee@samsung.com> > --- > drivers/of/of_reserved_mem.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c > index 8236ecae2953..d00a17a9cebc 100644 > --- a/drivers/of/of_reserved_mem.c > +++ b/drivers/of/of_reserved_mem.c > @@ -81,6 +81,7 @@ static void __init fdt_reserved_mem_save_node(unsigned long node, const char *un > static int __init early_init_dt_reserve_memory(phys_addr_t base, > phys_addr_t size, bool nomap) > { > + int err = 0; > if (nomap) { > /* > * If the memory is already reserved (by another region), we > @@ -91,7 +92,10 @@ static int __init early_init_dt_reserve_memory(phys_addr_t base, > memblock_is_region_reserved(base, size)) > return -EBUSY; > > - return memblock_mark_nomap(base, size); > + > + err = memblock_mark_nomap(base, size); The last time this was touched, it was to make the handling aligned with EFI memory map handling. Is that still going to be the case with this change? Or does EFI memory map handling have the same issue? > + if (err) > + return err; > } > return memblock_reserve(base, size); > } > -- > 2.25.1 > ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] of: of_reserved_mem: clean-up reserved memory with no-map 2024-05-22 14:31 ` Rob Herring @ 2024-05-24 9:32 ` DaeRo Lee 0 siblings, 0 replies; 4+ messages in thread From: DaeRo Lee @ 2024-05-24 9:32 UTC (permalink / raw To: Rob Herring Cc: lkp, daero_le.lee, devicetree, linux-kernel, llvm, oe-kbuild-all, rppt, saravanak 2024년 5월 22일 (수) 오후 11:31, Rob Herring <robh@kernel.org>님이 작성: > > On Wed, May 01, 2024 at 10:23:59PM +0900, skseofh@gmail.com wrote: > > From: Daero Lee <daero_le.lee@samsung.com> > > > > In early_init_dt_reserve_memory we only add memory w/o no-map flag to > > memblock.reserved. But we need to add memory w/ no-map flag to > > memblock.reserved, because NOMAP and memblock.reserved are semantically > > different. > > > > Signed-off-by: Daero Lee <daero_le.lee@samsung.com> > > --- > > drivers/of/of_reserved_mem.c | 6 +++++- > > 1 file changed, 5 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c > > index 8236ecae2953..d00a17a9cebc 100644 > > --- a/drivers/of/of_reserved_mem.c > > +++ b/drivers/of/of_reserved_mem.c > > @@ -81,6 +81,7 @@ static void __init fdt_reserved_mem_save_node(unsigned long node, const char *un > > static int __init early_init_dt_reserve_memory(phys_addr_t base, > > phys_addr_t size, bool nomap) > > { > > + int err = 0; > > if (nomap) { > > /* > > * If the memory is already reserved (by another region), we > > @@ -91,7 +92,10 @@ static int __init early_init_dt_reserve_memory(phys_addr_t base, > > memblock_is_region_reserved(base, size)) > > return -EBUSY; > > > > - return memblock_mark_nomap(base, size); > > + > > + err = memblock_mark_nomap(base, size); > > The last time this was touched, it was to make the handling aligned with > EFI memory map handling. Is that still going to be the case with this > change? Or does EFI memory map handling have the same issue? Can I get more information about EFI memory map handling that you're saying? 1) Are you talking about uefi_mem in the reserved-memory node like below? ex) arm64/boot/dts/qcom/qcs404.dtsi uefi_mem: memory@9f800000 { reg = <0 0x9f800000 0 0x800000>; no-map; }; 2) Or, about handling EFI memory map function efi_init() -> reserve_regions()? > > > + if (err) > > + return err; > > } > > return memblock_reserve(base, size); > > } > > -- > > 2.25.1 > > ^ permalink raw reply [flat|nested] 4+ messages in thread
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[not found] <20240428125505.434962-1-skseofh@gmail.com>
2024-05-01 4:59 ` [PATCH] of: of_reserved_mem: clean-up reserved memory with no-map kernel test robot
2024-05-01 13:23 ` [PATCH v2] " skseofh
2024-05-22 14:31 ` Rob Herring
2024-05-24 9:32 ` DaeRo Lee
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