From: David Miller <davem@davemloft.net>
To: nitin.m.gupta@oracle.com
Cc: mike.kravetz@oracle.com, akpm@linux-foundation.org,
kirill.shutemov@linux.intel.com, julian.calaby@gmail.com,
hughd@google.com, adam.buchbinder@gmail.com, minchan@kernel.org,
sfr@canb.auug.org.au, paul.gortmaker@windriver.com,
thomas.tai@oracle.com, chris.hyser@oracle.com,
atish.patra@oracle.com, mhocko@suse.com,
sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v4] sparc64: Multi-page size support
Date: Tue, 27 Dec 2016 12:34:09 -0500 (EST) [thread overview]
Message-ID: <20161227.123409.1061591712732030012.davem@davemloft.net> (raw)
In-Reply-To: <1481652247-12751-1-git-send-email-nitin.m.gupta@oracle.com>
From: Nitin Gupta <nitin.m.gupta@oracle.com>
Date: Tue, 13 Dec 2016 10:03:18 -0800
> +static unsigned int sun4u_huge_tte_to_shift(pte_t entry)
> +{
> + unsigned long tte_szbits = pte_val(entry) & _PAGE_SZALL_4V;
> + unsigned int shift;
> +
> + switch (tte_szbits) {
> + case _PAGE_SZ256MB_4U:
> + shift = HPAGE_256MB_SHIFT;
> + break;
You added all the code necessary to do this on the sun4u chips that support
256MB TTEs, so you might as well enable it in the initialization code.
I'm pretty sure this is an UltraSPARC-IV and later feature.
next prev parent reply other threads:[~2016-12-27 17:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-13 18:03 [PATCH v4] sparc64: Multi-page size support Nitin Gupta
2016-12-27 17:34 ` David Miller [this message]
2017-01-04 1:22 ` Nitin Gupta
2016-12-27 17:34 ` David Miller
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