From: Benjamin Herrenschmidt <benh@kernel•crashing.org>
To: Michael Neuling <mikey@neuling•org>, mpe@ellerman•id.au
Cc: aneesh.kumar@linux•vnet.ibm.com, linuxppc-dev@lists•ozlabs.org
Subject: Re: [PATCH] powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1
Date: Wed, 16 Nov 2016 15:35:52 +1100 [thread overview]
Message-ID: <1479270952.2608.82.camel@kernel.crashing.org> (raw)
In-Reply-To: <20161116041820.28433-1-mikey@neuling.org>
On Wed, 2016-11-16 at 15:18 +1100, Michael Neuling wrote:
> + asm volatile("isync \n"
> + PPC_SLBIA(0x7)
> + : : :"memory");
> return;
> }
>
We probably don't need the isync's
> @@ -83,6 +87,10 @@ static inline void _tlbiel_va(unsigned long va,
> unsigned long pid,
> asm volatile(PPC_TLBIEL(%0, %4, %3, %2, %1)
> : : "r"(rb), "i"(r), "i"(prs), "i"(ric), "r"(rs)
> : "memory");
> asm volatile("ptesync": : :"memory");
> + if (cpu_has_feature(CPU_FTR_POWER9_DD1))
> + asm volatile("isync \n"
> + PPC_SLBIA(0x7)
> + : : :"memory");
> }
next prev parent reply other threads:[~2016-11-16 4:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-16 4:18 [PATCH] powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1 Michael Neuling
2016-11-16 4:35 ` Benjamin Herrenschmidt [this message]
2016-11-16 5:14 ` Michael Neuling
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1479270952.2608.82.camel@kernel.crashing.org \
--to=benh@kernel$(echo .)crashing.org \
--cc=aneesh.kumar@linux$(echo .)vnet.ibm.com \
--cc=linuxppc-dev@lists$(echo .)ozlabs.org \
--cc=mikey@neuling$(echo .)org \
--cc=mpe@ellerman$(echo .)id.au \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox