diff mbox series

[v3,2/6] MIPS: Loongson64: Set the field ELPA of CP0_PAGEGRAIN only once

Message ID 1604387525-23400-3-git-send-email-yangtiezhu@loongson.cn (mailing list archive)
State Accepted
Headers show
Series Modify some registers operations and move decode_cpucfg() to loongson_regs.h | expand

Commit Message

Tiezhu Yang Nov. 3, 2020, 7:12 a.m. UTC 
The field ELPA of CP0_PAGEGRAIN register is set at the beginning
of the kernel entry point in kernel-entry-init.h, no need to set
it again in numa.c, we can remove enable_lpa() and only print the
related information.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---

v2: No changes
v3: No changes

 arch/mips/loongson64/numa.c | 17 ++---------------
 1 file changed, 2 insertions(+), 15 deletions(-)
diff mbox series

Patch

diff --git a/arch/mips/loongson64/numa.c b/arch/mips/loongson64/numa.c
index c7e3cced..509b360 100644
--- a/arch/mips/loongson64/numa.c
+++ b/arch/mips/loongson64/numa.c
@@ -35,20 +35,6 @@  EXPORT_SYMBOL(__node_data);
 cpumask_t __node_cpumask[MAX_NUMNODES];
 EXPORT_SYMBOL(__node_cpumask);
 
-static void enable_lpa(void)
-{
-	unsigned long value;
-
-	value = __read_32bit_c0_register($16, 3);
-	pr_info("CP0_Config3: CP0 16.3 (0x%lx)\n", value);
-
-	value = __read_32bit_c0_register($5, 1);
-	value |= 0x20000000;
-	__write_32bit_c0_register($5, 1, value);
-	value = __read_32bit_c0_register($5, 1);
-	pr_info("CP0_PageGrain: CP0 5.1 (0x%lx)\n", value);
-}
-
 static void cpu_node_probe(void)
 {
 	int i;
@@ -240,7 +226,8 @@  EXPORT_SYMBOL(pcibus_to_node);
 
 void __init prom_init_numa_memory(void)
 {
-	enable_lpa();
+	pr_info("CP0_Config3: CP0 16.3 (0x%x)\n", read_c0_config3());
+	pr_info("CP0_PageGrain: CP0 5.1 (0x%x)\n", read_c0_pagegrain());
 	prom_meminit();
 }
 EXPORT_SYMBOL(prom_init_numa_memory);