From: Vineet Gupta <vgupta@synopsys.com>
Date: Thu, 16 May 2013 06:53:31 +0000 (+0530)
Subject: ARC: [mm] optimise VIPT dcache aliasing 1/x
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5971bc719d1e329401412ae03ab83c2e4768cd2e;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

ARC: [mm] optimise VIPT dcache aliasing 1/x

flush_cache_page() - kills icache only if page is executable

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

diff --git a/arch/arc/mm/cache_arc700.c b/arch/arc/mm/cache_arc700.c
index 03012a27d590..4e54ef5b4c2a 100644
--- a/arch/arc/mm/cache_arc700.c
+++ b/arch/arc/mm/cache_arc700.c
@@ -679,7 +679,12 @@ void flush_cache_page(struct vm_area_struct *vma, unsigned long u_vaddr,
 {
 	unsigned int paddr = pfn << PAGE_SHIFT;
 
-	__sync_icache_dcache(paddr, u_vaddr, PAGE_SIZE);
+	u_vaddr &= PAGE_MASK;
+
+	___flush_dcache_page(paddr, u_vaddr);
+
+	if (vma->vm_flags & VM_EXEC)
+		__inv_icache_page(paddr, u_vaddr);
 }
 
 void flush_cache_range(struct vm_area_struct *vma, unsigned long start,