From: Scott Wood <oss@buserror.net>
To: yingjie_bai@126.com, Kumar Gala <galak@kernel.crashing.org>
Cc: Bai Yingjie <byj.tea@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Christophe Leroy <christophe.leroy@c-s.fr>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>,
Jason Yan <yanaijie@huawei.com>,
Diana Craciun <diana.craciun@nxp.com>,
Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
Nicholas Piggin <npiggin@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Allison Randal <allison@lohutok.net>,
linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/2] powerpc/mpc85xx: also write addr_h to spin table for 64bit boot entry
Date: Mon, 06 Jan 2020 12:05:59 -0600 [thread overview]
Message-ID: <d8cddd005901e64133e9ecbb14ec8fdf3269972d.camel@buserror.net> (raw)
In-Reply-To: <20200106042957.26494-2-yingjie_bai@126.com>
On Mon, 2020-01-06 at 12:29 +0800, yingjie_bai@126.com wrote:
> From: Bai Yingjie <byj.tea@gmail.com>
>
> CPU like P4080 has 36bit physical address, its DDR physical
> start address can be configured above 4G by LAW registers.
>
> For such systems in which their physical memory start address was
> configured higher than 4G, we need also to write addr_h into the spin
> table of the target secondary CPU, so that addr_h and addr_l together
> represent a 64bit physical address.
> Otherwise the secondary core can not get correct entry to start from.
>
> Signed-off-by: Bai Yingjie <byj.tea@gmail.com>
> ---
> arch/powerpc/platforms/85xx/smp.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
Acked-by: Scott Wood <oss@buserror.net>
-Scott
next prev parent reply other threads:[~2020-01-06 18:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-06 4:29 [PATCH v3 1/2] powerpc32/booke: consistently return phys_addr_t in __pa() yingjie_bai
2020-01-06 4:29 ` [PATCH v3 2/2] powerpc/mpc85xx: also write addr_h to spin table for 64bit boot entry yingjie_bai
2020-01-06 18:05 ` Scott Wood [this message]
2020-01-29 5:17 ` [PATCH v3 1/2] powerpc32/booke: consistently return phys_addr_t in __pa() Michael Ellerman
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