Subject: [PATCH v3 6/8] powerpc/mm: Print kernel map details to dmesg

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Tue, 16 Apr 2019 15:37:20 +0530

This helps in debugging. We can look at the dmesg to find out
different kernel mapping details.

On 4K config this shows

 kernel vmalloc start   = 0xc000100000000000
 kernel IO start        = 0xc000200000000000
 kernel vmemmap start   = 0xc000300000000000

On 64K config:

 kernel vmalloc start   = 0xc008000000000000
 kernel IO start        = 0xc00a000000000000
 kernel vmemmap start   = 0xc00c000000000000

Signed-off-by: Aneesh Kumar K.V <[email-masked]>
---
 arch/powerpc/kernel/setup-common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 2e5dfb6e0823..a7ab9638ebd9 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -831,6 +831,9 @@ static __init void print_system_info(void)
 		pr_info("htab_address      = 0x%p\n", htab_address);
 	if (htab_hash_mask)
 		pr_info("htab_hash_mask    = 0x%lx\n", htab_hash_mask);
+	pr_info("kernel vmalloc start   = 0x%lx\n", KERN_VIRT_START);
+	pr_info("kernel IO start        = 0x%lx\n", KERN_IO_START);
+	pr_info("kernel vmemmap start   = 0x%lx\n", (unsigned long)vmemmap);
 #endif
 #ifdef CONFIG_PPC_BOOK3S_32
 	if (Hash)
-- 
2.20.1