| Message ID | 20240429124955.2294014-2-rrichter@amd.com (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | SRAT/CEDT fixes and updates | expand |
Hi Robert, kernel test robot noticed the following build warnings: [auto build test WARNING on 62dba604a4883169abf959b7d09449900e7d4537] url: https://github.com/intel-lab-lkp/linux/commits/Robert-Richter/x86-numa-Fix-SRAT-lookup-of-CFMWS-ranges-with-numa_fill_memblks/20240429-205337 base: 62dba604a4883169abf959b7d09449900e7d4537 patch link: https://lore.kernel.org/r/20240429124955.2294014-2-rrichter%40amd.com patch subject: [PATCH v5 1/7] x86/numa: Fix SRAT lookup of CFMWS ranges with numa_fill_memblks() config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20240430/202404301038.2YNsO1Qn-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240430/202404301038.2YNsO1Qn-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/202404301038.2YNsO1Qn-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/acpi/numa/srat.c:211:19: warning: no previous prototype for 'numa_fill_memblks' [-Wmissing-prototypes] 211 | __weak int __init numa_fill_memblks(u64 start, u64 end) | ^~~~~~~~~~~~~~~~~ vim +/numa_fill_memblks +211 drivers/acpi/numa/srat.c 210 > 211 __weak int __init numa_fill_memblks(u64 start, u64 end) 212 { 213 return NUMA_NO_MEMBLK; 214 } 215
Hi Robert,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 62dba604a4883169abf959b7d09449900e7d4537]
url: https://github.com/intel-lab-lkp/linux/commits/Robert-Richter/x86-numa-Fix-SRAT-lookup-of-CFMWS-ranges-with-numa_fill_memblks/20240429-205337
base: 62dba604a4883169abf959b7d09449900e7d4537
patch link: https://lore.kernel.org/r/20240429124955.2294014-2-rrichter%40amd.com
patch subject: [PATCH v5 1/7] x86/numa: Fix SRAT lookup of CFMWS ranges with numa_fill_memblks()
config: arm64-randconfig-r121-20240430 (https://download.01.org/0day-ci/archive/20240430/202404301142.aJtZ8Xh9-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 37ae4ad0eef338776c7e2cffb3896153d43dcd90)
reproduce: (https://download.01.org/0day-ci/archive/20240430/202404301142.aJtZ8Xh9-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/202404301142.aJtZ8Xh9-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/acpi/numa/srat.c:15:
In file included from include/linux/acpi.h:39:
In file included from include/acpi/acpi_io.h:7:
In file included from arch/arm64/include/asm/acpi.h:14:
In file included from include/linux/memblock.h:12:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
508 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
509 | item];
| ~~~~
include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
515 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
516 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
527 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
528 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:536:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
536 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
537 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/acpi/numa/srat.c:211:19: warning: no previous prototype for function 'numa_fill_memblks' [-Wmissing-prototypes]
211 | __weak int __init numa_fill_memblks(u64 start, u64 end)
| ^
drivers/acpi/numa/srat.c:211:8: note: declare 'static' if the function is not intended to be used outside of this translation unit
211 | __weak int __init numa_fill_memblks(u64 start, u64 end)
| ^
| static
6 warnings generated.
vim +/numa_fill_memblks +211 drivers/acpi/numa/srat.c
210
> 211 __weak int __init numa_fill_memblks(u64 start, u64 end)
212 {
213 return NUMA_NO_MEMBLK;
214 }
215
diff --git a/arch/x86/include/asm/numa.h b/arch/x86/include/asm/numa.h index ef2844d69173..12a93a3466c4 100644 --- a/arch/x86/include/asm/numa.h +++ b/arch/x86/include/asm/numa.h @@ -26,6 +26,7 @@ extern s16 __apicid_to_node[MAX_LOCAL_APIC]; extern nodemask_t numa_nodes_parsed __initdata; extern int __init numa_add_memblk(int nodeid, u64 start, u64 end); +extern int __init numa_fill_memblks(u64 start, u64 end); extern void __init numa_set_distance(int from, int to, int distance); static inline void set_apicid_to_node(int apicid, s16 node) diff --git a/arch/x86/include/asm/sparsemem.h b/arch/x86/include/asm/sparsemem.h index 1be13b2dfe8b..64df897c0ee3 100644 --- a/arch/x86/include/asm/sparsemem.h +++ b/arch/x86/include/asm/sparsemem.h @@ -37,8 +37,6 @@ extern int phys_to_target_node(phys_addr_t start); #define phys_to_target_node phys_to_target_node extern int memory_add_physaddr_to_nid(u64 start); #define memory_add_physaddr_to_nid memory_add_physaddr_to_nid -extern int numa_fill_memblks(u64 start, u64 end); -#define numa_fill_memblks numa_fill_memblks #endif #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 65e9a6e391c0..ce84ba86e69e 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -929,6 +929,8 @@ int memory_add_physaddr_to_nid(u64 start) } EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid); +#endif + static int __init cmp_memblk(const void *a, const void *b) { const struct numa_memblk *ma = *(const struct numa_memblk **)a; @@ -1001,5 +1003,3 @@ int __init numa_fill_memblks(u64 start, u64 end) } return 0; } - -#endif diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index e45e64993c50..3b09fd39eeb4 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -208,6 +208,11 @@ int __init srat_disabled(void) return acpi_numa < 0; } +__weak int __init numa_fill_memblks(u64 start, u64 end) +{ + return NUMA_NO_MEMBLK; +} + #if defined(CONFIG_X86) || defined(CONFIG_ARM64) || defined(CONFIG_LOONGARCH) /* * Callback for SLIT parsing. pxm_to_node() returns NUMA_NO_NODE for diff --git a/include/linux/numa.h b/include/linux/numa.h index 915033a75731..8485d98e554d 100644 --- a/include/linux/numa.h +++ b/include/linux/numa.h @@ -36,13 +36,6 @@ int memory_add_physaddr_to_nid(u64 start); int phys_to_target_node(u64 start); #endif -#ifndef numa_fill_memblks -static inline int __init numa_fill_memblks(u64 start, u64 end) -{ - return NUMA_NO_MEMBLK; -} -#endif - #else /* !CONFIG_NUMA */ static inline int numa_nearest_node(int node, unsigned int state) {
For configurations that have the kconfig option NUMA_KEEP_MEMINFO disabled numa_fill_memblks() only returns with NUMA_NO_MEMBLK (-1). SRAT lookup fails then because an existing SRAT memory range cannot be found for a CFMWS address range. This causes the addition of a duplicate numa_memblk with a different node id and a subsequent page fault and kernel crash during boot. Fix this by making numa_fill_memblks() always available regardless of NUMA_KEEP_MEMINFO. The fix also removes numa_fill_memblks() from sparsemem.h using __weak. From Dan: """ It just feels like numa_fill_memblks() has absolutely no business being defined in arch/x86/include/asm/sparsemem.h. The only use for numa_fill_memblks() is to arrange for NUMA nodes to be applied to memory ranges hot-onlined by the CXL driver. It belongs right next to numa_add_memblk(), and I suspect arch/x86/include/asm/sparsemem.h was only chosen to avoid figuring out what to do about the fact that linux/numa.h does not include asm/numa.h and that all implementations either provide numa_add_memblk() or select the generic implementation. So I would prefer that this do the proper fix and get numa_fill_memblks() completely out of the sparsemem.h path. Something like the following which boots for me. """ Note that the issue was initially introduced with [1]. But since phys_to_target_node() was originally used that returned the valid node 0, an additional numa_memblk was not added. Though, the node id was wrong too, a message is seen then in the logs: kernel/numa.c: pr_info_once("Unknown target node for memory at 0x%llx, assuming node 0\n", [1] commit fd49f99c1809 ("ACPI: NUMA: Add a node and memblk for each CFMWS not in SRAT") Suggested-by: Dan Williams <dan.j.williams@intel.com> Link: https://lore.kernel.org/all/66271b0072317_69102944c@dwillia2-xfh.jf.intel.com.notmuch/ Fixes: 8f1004679987 ("ACPI/NUMA: Apply SRAT proximity domain to entire CFMWS window") Cc: Derick Marks <derick.w.marks@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Alison Schofield <alison.schofield@intel.com> Signed-off-by: Robert Richter <rrichter@amd.com> --- Authorship can be changed to Dan's if he wants to but that needs his Signed-off-by. --- arch/x86/include/asm/numa.h | 1 + arch/x86/include/asm/sparsemem.h | 2 -- arch/x86/mm/numa.c | 4 ++-- drivers/acpi/numa/srat.c | 5 +++++ include/linux/numa.h | 7 ------- 5 files changed, 8 insertions(+), 11 deletions(-)