From: Chris Dearman <chris@mips.com>
Date: Fri, 14 Sep 2007 20:21:58 +0000 (+0100)
Subject: [MIPS] Remove TLB sanitation code
X-Git-Tag: v2.6.26-rc1~700^2~42
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0bfa130e741f8f73a7bbf6a89aad4816e9094a71;p=linux-2.6

[MIPS] Remove TLB sanitation code

It is not being used by Malta and shouldn't be needed for MIPSsim.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c
index 89e6f6aa51..e9c393a417 100644
--- a/arch/mips/kernel/smp-mt.c
+++ b/arch/mips/kernel/smp-mt.c
@@ -58,53 +58,6 @@ static void dump_mtregisters(int vpe, int tc)
 }
 #endif
 
-void __init sanitize_tlb_entries(void)
-{
-	int i, tlbsiz;
-	unsigned long mvpconf0, ncpu;
-
-	if (!cpu_has_mipsmt)
-		return;
-
-	/* Enable VPC */
-	set_c0_mvpcontrol(MVPCONTROL_VPC);
-
-	back_to_back_c0_hazard();
-
-	/* Disable TLB sharing */
-	clear_c0_mvpcontrol(MVPCONTROL_STLB);
-
-	mvpconf0 = read_c0_mvpconf0();
-
-	printk(KERN_INFO "MVPConf0 0x%lx TLBS %lx PTLBE %ld\n", mvpconf0,
-		   (mvpconf0 & MVPCONF0_TLBS) >> MVPCONF0_TLBS_SHIFT,
-			   (mvpconf0 & MVPCONF0_PTLBE) >> MVPCONF0_PTLBE_SHIFT);
-
-	tlbsiz = (mvpconf0 & MVPCONF0_PTLBE) >> MVPCONF0_PTLBE_SHIFT;
-	ncpu = ((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
-
-	printk(" tlbsiz %d ncpu %ld\n", tlbsiz, ncpu);
-
-	if (tlbsiz > 0) {
-		/* share them out across the vpe's */
-		tlbsiz /= ncpu;
-
-		printk(KERN_INFO "setting Config1.MMU_size to %d\n", tlbsiz);
-
-		for (i = 0; i < ncpu; i++) {
-			settc(i);
-
-			if (i == 0)
-				write_c0_config1((read_c0_config1() & ~(0x3f << 25)) | (tlbsiz << 25));
-			else
-				write_vpe_c0_config1((read_vpe_c0_config1() & ~(0x3f << 25)) |
-						   (tlbsiz << 25));
-		}
-	}
-
-	clear_c0_mvpcontrol(MVPCONTROL_VPC);
-}
-
 static void ipi_resched_dispatch(void)
 {
 	do_IRQ(MIPS_CPU_IRQ_BASE + MIPS_CPU_IPI_RESCHED_IRQ);
diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
index b42e71c711..4705b3c11e 100644
--- a/arch/mips/kernel/smtc.c
+++ b/arch/mips/kernel/smtc.c
@@ -174,14 +174,6 @@ static int clock_hang_reported[NR_CPUS];
 
 #endif /* CONFIG_SMTC_IDLE_HOOK_DEBUG */
 
-/* Initialize shared TLB - the should probably migrate to smtc_setup_cpus() */
-
-void __init sanitize_tlb_entries(void)
-{
-	printk("Deprecated sanitize_tlb_entries() invoked\n");
-}
-
-
 /*
  * Configure shared TLB - VPC configuration bit must be set by caller
  */
diff --git a/arch/mips/mipssim/sim_setup.c b/arch/mips/mipssim/sim_setup.c
index d49fe73426..7c7148ef26 100644
--- a/arch/mips/mipssim/sim_setup.c
+++ b/arch/mips/mipssim/sim_setup.c
@@ -39,9 +39,6 @@
 static void __init serial_init(void);
 unsigned int _isbonito = 0;
 
-extern void __init sanitize_tlb_entries(void);
-
-
 const char *get_system_type(void)
 {
 	return "MIPSsim";
@@ -55,9 +52,6 @@ void __init plat_mem_setup(void)
 
 	pr_info("Linux started...\n");
 
-#ifdef CONFIG_MIPS_MT_SMP
-	sanitize_tlb_entries();
-#endif
 }
 
 extern struct plat_smp_ops ssmtc_smp_ops;