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[PATCH 15/16] work around for more than 256MB memory support

To: linux-mips@linux-mips.org
Subject: [PATCH 15/16] work around for more than 256MB memory support
From: tiansm@lemote.com
Date: Sun, 15 Apr 2007 23:26:04 +0800
Cc: Fuxin Zhang <zhangfx@lemote.com>
In-reply-to: <11766507672298-git-send-email-tiansm@lemote.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <11766507651736-git-send-email-tiansm@lemote.com> <11766507661317-git-send-email-tiansm@lemote.com> <11766507661726-git-send-email-tiansm@lemote.com> <11766507662638-git-send-email-tiansm@lemote.com> <11766507661133-git-send-email-tiansm@lemote.com> <11766507661526-git-send-email-tiansm@lemote.com> <11766507662650-git-send-email-tiansm@lemote.com> <11766507661684-git-send-email-tiansm@lemote.com> <117665076617-git-send-email-tiansm@lemote.com> <1176650766907-git-send-email-tiansm@lemote.com> <11766507663301-git-send-email-tiansm@lemote.com> <11766507663039-git-send-email-tiansm@lemote.com> <1176650766685-git-send-email-tiansm@lemote.com> <11766507661790-git-send-email-tiansm@lemote.com> <11766507672298-git-send-email-tiansm@lemote.com>
Sender: linux-mips-bounce@linux-mips.org
From: Fuxin Zhang <zhangfx@lemote.com>

Signed-off-by: Fuxin Zhang <zhangfx@lemote.com>
---
 drivers/char/mem.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index f5c160c..580ad3e 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -83,8 +83,12 @@ static inline int uncached_access(struct file *file, 
unsigned long addr)
         */
        if (file->f_flags & O_SYNC)
                return 1;
+#if defined(CONFIG_LEMOTE_FULONG) && defined(CONFIG_64BIT)
+       return (addr >= __pa(high_memory)) || ((addr >=0x10000000) && (addr < 
0x20000000));
+#else
        return addr >= __pa(high_memory);
 #endif
+#endif
 }
 
 #ifndef ARCH_HAS_VALID_PHYS_ADDR_RANGE
-- 
1.4.4.1


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