From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: Paul Burton <paul.burton@mips.com>,
"linux-mips@vger.kernel.org" <linux-mips@vger.kernel.org>
Cc: Serge Semin <fancer.lancer@gmail.com>,
Paul Burton <pburton@wavecomp.com>
Subject: Re: [PATCH 3/4] MIPS: Sync icache for whole exception vector
Date: Wed, 1 May 2019 17:09:29 +0200 [thread overview]
Message-ID: <a9878dba-f982-fafa-bde8-1b35757b0b97@amsat.org> (raw)
In-Reply-To: <20190430225216.7164-4-paul.burton@mips.com>
On 5/1/19 12:53 AM, Paul Burton wrote:
> 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);
>
>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
next prev parent reply other threads:[~2019-05-01 15:09 UTC|newest]
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 3/4] MIPS: Sync icache for whole " Paul Burton
2019-05-01 15:09 ` Philippe Mathieu-Daudé [this message]
2019-04-30 22:53 ` [PATCH 4/4] MIPS: Remove duplicate EBase configuration Paul Burton
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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