From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: npiggin@gmail.com, paulus@samba.org, mpe@ellerman.id.au
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v3 6/8] powerpc/mm: Print kernel map details to dmesg
Date: Tue, 16 Apr 2019 15:37:20 +0530 [thread overview]
Message-ID: <20190416100722.10324-7-aneesh.kumar@linux.ibm.com> (raw)
In-Reply-To: <20190416100722.10324-1-aneesh.kumar@linux.ibm.com>
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 <aneesh.kumar@linux.ibm.com>
---
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
next prev parent reply other threads:[~2019-04-16 10:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 10:07 [PATCH v3 0/8] Update hash MMU kernel mapping to be in sync with radix Aneesh Kumar K.V
2019-04-16 10:07 ` [PATCH v3 1/8] powerpc/mm/hash64: Add a variable to track the end of IO mapping Aneesh Kumar K.V
2019-04-16 10:07 ` [PATCH v3 2/8] powerpc/mm/hash64: Map all the kernel regions in the same 0xc range Aneesh Kumar K.V
2019-04-16 10:07 ` [PATCH v3 3/8] powerpc/mm: Validate address values against different region limits Aneesh Kumar K.V
2019-04-16 10:07 ` [PATCH v3 4/8] powerpc/mm: Drop the unnecessary region check Aneesh Kumar K.V
2019-04-16 10:07 ` [PATCH v3 5/8] powerpc/mm/hash: Simplify the region id calculation Aneesh Kumar K.V
2019-04-16 10:07 ` Aneesh Kumar K.V [this message]
2019-04-16 10:07 ` [PATCH v3 7/8] powerpc/mm: Consolidate radix and hash address map details Aneesh Kumar K.V
2019-04-16 14:03 ` Nicholas Piggin
2019-04-17 3:00 ` Aneesh Kumar K.V
2019-04-17 12:34 ` Michael Ellerman
2019-04-18 1:20 ` Nicholas Piggin
2019-04-16 10:07 ` [PATCH v3 8/8] powerpc/mm/hash: Rename KERNEL_REGION_ID to LINEAR_MAP_REGION_ID Aneesh Kumar K.V
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