From: Markos Chandras <markos.chandras@imgtec.com>
Date: Thu, 16 Jan 2014 13:11:08 +0000 (+0000)
Subject: MIPS: mm: c-r4k: Add support for flushing user pages from cache
X-Git-Tag: accepted/tizen/common/20141203.182822~328^2~69
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=80ca69f40f26fb016e6d863b48fe1a1abdae8840;p=platform%2Fkernel%2Flinux-arm64.git

MIPS: mm: c-r4k: Add support for flushing user pages from cache

Use the userspace cache flushing functions if the interrupted
process is a userspace one.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
---

diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 6332a9e..9b223e0 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -562,7 +562,8 @@ static inline void local_r4k_flush_cache_page(void *args)
 	}
 
 	if (cpu_has_dc_aliases || (exec && !cpu_has_ic_fills_f_dc)) {
-		r4k_blast_dcache_page(addr);
+		vaddr ? r4k_blast_dcache_page(addr) :
+			r4k_blast_dcache_user_page(addr);
 		if (exec && !cpu_icache_snoops_remote_store)
 			r4k_blast_scache_page(addr);
 	}
@@ -573,7 +574,8 @@ static inline void local_r4k_flush_cache_page(void *args)
 			if (cpu_context(cpu, mm) != 0)
 				drop_mmu_context(mm, cpu);
 		} else
-			r4k_blast_icache_page(addr);
+			vaddr ? r4k_blast_icache_page(addr) :
+				r4k_blast_icache_user_page(addr);
 	}
 
 	if (vaddr) {