From: Petr Tesarik <ptesarik@suse.cz>
Subject: Use correct l3 index size with SLE15-SP1 ppc64le kernels
References: bsc#1123015
Upstream: never, SUSE-specific

SLE 15 SP1 backported commit c2b4d8b7417a ("powerpc/mm/hash64: Increase
the VA range"), to Linux 4.12, so let's check SUSE_PRODUCT_CODE.
diff -uprN makedumpfile-1.7.5.orig/arch/ppc64.c makedumpfile-1.7.5/arch/ppc64.c
--- makedumpfile-1.7.5.orig/arch/ppc64.c	2024-04-12 13:09:09.000000000 +0800
+++ makedumpfile-1.7.5/arch/ppc64.c	2024-05-16 14:19:46.846209221 +0800
@@ -261,7 +261,9 @@ ppc64_vmalloc_init(void)
 
 			if (info->kernel_version >= KERNEL_VERSION(4, 12, 0)) {
 				info->l2_index_size = PMD_INDEX_SIZE_L4_64K_4_12;
-				if (info->kernel_version >= KERNEL_VERSION(4, 17, 0))
+				if (info->kernel_version >= KERNEL_VERSION(4, 17, 0) ||
+				    ((NUMBER(SUSE_PRODUCT_CODE) & ~0xffL) == 0x010f0100) ||
+				    ((NUMBER(SUSE_PRODUCT_CODE) & ~0xffL) == 0x010c0500))
 					info->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_17;
 				else
 					info->l3_index_size = PUD_INDEX_SIZE_L4_64K_4_12;
diff -uprN makedumpfile-1.7.5.orig/makedumpfile.c makedumpfile-1.7.5/makedumpfile.c
--- makedumpfile-1.7.5.orig/makedumpfile.c	2024-04-12 13:09:09.000000000 +0800
+++ makedumpfile-1.7.5/makedumpfile.c	2024-05-16 14:16:42.897988141 +0800
@@ -2531,6 +2531,7 @@ write_vmcoreinfo_data(void)
 	WRITE_NUMBER_UNSIGNED("PHYS_OFFSET", PHYS_OFFSET);
 	WRITE_NUMBER_UNSIGNED("kimage_voffset", kimage_voffset);
 #endif
+        WRITE_NUMBER("SUSE_PRODUCT_CODE", SUSE_PRODUCT_CODE);
 
 	if (info->phys_base)
 		fprintf(info->file_vmcoreinfo, "%s%lu\n", STR_NUMBER("phys_base"),
@@ -3002,6 +3003,7 @@ read_vmcoreinfo(void)
 
 	READ_NUMBER("HUGETLB_PAGE_DTOR", HUGETLB_PAGE_DTOR);
 	READ_NUMBER("RADIX_MMU", RADIX_MMU);
+	READ_NUMBER("SUSE_PRODUCT_CODE", SUSE_PRODUCT_CODE);
 
 	return TRUE;
 }
diff -uprN makedumpfile-1.7.5.orig/makedumpfile.h makedumpfile-1.7.5/makedumpfile.h
--- makedumpfile-1.7.5.orig/makedumpfile.h	2024-04-12 13:09:09.000000000 +0800
+++ makedumpfile-1.7.5/makedumpfile.h	2024-05-16 14:18:08.275376258 +0800
@@ -2283,6 +2283,9 @@ struct number_table {
 	unsigned long va_kernel_pa_offset;
 #endif
 
+	/* Distro-specific */
+	long	SUSE_PRODUCT_CODE;
+
 	unsigned long RADIX_MMU;
 };