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From: Paul Burton <paul.burton@mips.com>
To: "linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>
Cc: Serge Semin <fancer.lancer@gmail.com>,
	Paul Burton <pburton@wavecomp.com>
Subject: [PATCH 3/4] MIPS: Sync icache for whole exception vector
Date: Tue, 30 Apr 2019 22:53:31 +0000
Message-ID: <20190430225216.7164-4-paul.burton@mips.com> (raw)
In-Reply-To: <20190430225216.7164-1-paul.burton@mips.com>

Rather than performing cache flushing for a fixed 0x400 bytes, use the
actual size of the vector in order to ensure we cover all emitted code
on systems that make use of vectored interrupts.

Signed-off-by: Paul Burton <paul.burton@mips.com>
---
 arch/mips/kernel/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 9b565ed51662..2775190adbe7 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -2454,7 +2454,7 @@ void __init trap_init(void)
 	else
 		set_handler(0x080, &except_vec3_generic, 0x80);
 
-	local_flush_icache_range(ebase, ebase + 0x400);
+	local_flush_icache_range(ebase, ebase + vec_size);
 
 	sort_extable(__start___dbe_table, __stop___dbe_table);
 
-- 
2.21.0


  parent reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-30 22:53 [PATCH 0/4] MIPS: Exception vector improvements Paul Burton
2019-04-30 22:53 ` [PATCH 2/4] MIPS: Always allocate exception vector for MIPSr2+ Paul Burton
2019-04-30 22:53 ` [PATCH 1/4] MIPS: Use memblock_phys_alloc() for exception vector Paul Burton
2019-05-01 14:32   ` Philippe Mathieu-Daudé
2019-04-30 22:53 ` [PATCH 4/4] MIPS: Remove duplicate EBase configuration Paul Burton
2019-04-30 22:53 ` Paul Burton [this message]
2019-05-01 15:09   ` [PATCH 3/4] MIPS: Sync icache for whole exception vector Philippe Mathieu-Daudé
2019-05-02 13:59 ` [PATCH 0/4] MIPS: Exception vector improvements Serge Semin
2019-05-02 18:35 ` Paul Burton

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