From 958e46acc8e900e8569dd467c1af9b8d2d019394 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:54 +0000
Subject: [PATCH] disable cpu isolcpus
---
kernel/arch/parisc/include/asm/mmu_context.h | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/kernel/arch/parisc/include/asm/mmu_context.h b/kernel/arch/parisc/include/asm/mmu_context.h
index 697a906..aba69ff 100644
--- a/kernel/arch/parisc/include/asm/mmu_context.h
+++ b/kernel/arch/parisc/include/asm/mmu_context.h
@@ -5,8 +5,7 @@
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/atomic.h>
-#include <asm/pgalloc.h>
-#include <asm/pgtable.h>
+#include <linux/spinlock.h>
#include <asm-generic/mm_hooks.h>
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
@@ -54,6 +53,12 @@
struct mm_struct *next, struct task_struct *tsk)
{
if (prev != next) {
+#ifdef CONFIG_TLB_PTLOCK
+ /* put physical address of page_table_lock in cr28 (tr4)
+ for TLB faults */
+ spinlock_t *pgd_lock = &next->page_table_lock;
+ mtctl(__pa(__ldcw_align(&pgd_lock->rlock.raw_lock)), 28);
+#endif
mtctl(__pa(next->pgd), 25);
load_context(next->context);
}
--
Gitblit v1.6.2