From: Jacob Shin <jacob.shin@amd.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
X86-ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
Tejun Heo <tj@kernel.org>, Dave Young <dyoung@redhat.com>,
Chao Wang <chaowang@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
Andreas Herrmann <andreas.herrmann3@amd.com>,
Borislav Petkov <borislav.petkov@amd.com>
Subject: Re: [PATCH 1/5] x86: Move enabling of PSE and PGE out of init_memory_mapping
Date: Fri, 24 Aug 2012 23:15:42 -0500 [thread overview]
Message-ID: <20120825041542.GB26127@jshin-Toonie> (raw)
In-Reply-To: <CAE9FiQUddNjpwQjs7ccURf_gKtr=-u5BNLcsxnwo+=KF+g1UAg@mail.gmail.com>
On Fri, Aug 24, 2012 at 07:06:42PM -0700, Yinghai Lu wrote:
> On Fri, Aug 24, 2012 at 6:49 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> > On Fri, Aug 24, 2012 at 6:25 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> >> On Fri, Aug 24, 2012 at 4:55 PM, Jacob Shin <jacob.shin@amd.com> wrote:
> >>> Depending on the platform, init_memory_mapping() may be called multiple
> >>> times. Move it out to setup_arch() to avoid writing to cr4 on every call.
> >>>
> >>> Signed-off-by: Jacob Shin <jacob.shin@amd.com>
> >>> ---
> >>> arch/x86/kernel/setup.c | 10 ++++++++++
> >>> arch/x86/mm/init.c | 10 ----------
> >>> 2 files changed, 10 insertions(+), 10 deletions(-)
> >>>
> >>> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> >>> index f4b9b80..751e020 100644
> >>> --- a/arch/x86/kernel/setup.c
> >>> +++ b/arch/x86/kernel/setup.c
> >>> @@ -913,6 +913,16 @@ void __init setup_arch(char **cmdline_p)
> >>>
> >>> init_gbpages();
> >>>
> >>> + /* Enable PSE if available */
> >>> + if (cpu_has_pse)
> >>> + set_in_cr4(X86_CR4_PSE);
> >>> +
> >>> + /* Enable PGE if available */
> >>> + if (cpu_has_pge) {
> >>> + set_in_cr4(X86_CR4_PGE);
> >>> + __supported_pte_mask |= _PAGE_GLOBAL;
> >>> + }
> >>> +
> >>
> >> please don't put it directly in setup_arch().
> >>
> >> and another function.
> >>
> >
> > Jacob, hpa
> >
> > can you use attached one to replace the first patch?
>
> Please use attached two instead.
Hmm .. okay I'll test with these two patches applied on Monday ..
>
> Thanks
>
> Yinghai
next prev parent reply other threads:[~2012-08-25 4:17 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-24 23:55 [PATCH V4 0/5] x86: Create direct mappings for E820_RAM only Jacob Shin
2012-08-24 23:55 ` [PATCH 1/5] x86: Move enabling of PSE and PGE out of init_memory_mapping Jacob Shin
2012-08-25 1:25 ` Yinghai Lu
2012-08-25 1:49 ` Yinghai Lu
2012-08-25 2:06 ` Yinghai Lu
2012-08-25 4:15 ` Jacob Shin [this message]
2012-08-25 4:13 ` Jacob Shin
2012-08-24 23:55 ` [PATCH 2/5] x86: find_early_table_space based on memory ranges that are being mapped Jacob Shin
2012-10-21 21:22 ` Tom Rini
2012-08-24 23:55 ` [PATCH 3/5] x86: Only direct map addresses that are marked as E820_RAM Jacob Shin
2012-08-25 0:17 ` Jacob Shin
2012-08-25 0:30 ` H. Peter Anvin
2012-08-25 0:49 ` Jacob Shin
2012-08-25 1:13 ` H. Peter Anvin
2012-08-25 4:20 ` Jacob Shin
2012-08-25 4:21 ` H. Peter Anvin
2012-08-27 19:17 ` Jacob Shin
2012-08-27 20:15 ` H. Peter Anvin
2012-08-25 1:07 ` Yinghai Lu
2012-08-25 4:24 ` Jacob Shin
2012-08-25 4:54 ` Yinghai Lu
2012-08-27 18:49 ` Jacob Shin
2012-08-27 20:16 ` H. Peter Anvin
2012-08-28 16:06 ` Jacob Shin
2012-08-28 16:11 ` H. Peter Anvin
2012-08-24 23:55 ` [PATCH 4/5] x86: Fixup code testing if a pfn is direct mapped Jacob Shin
2012-08-24 23:55 ` [PATCH 5/5] x86: if kernel .text .data .bss are not marked as E820_RAM, complain and fix Jacob Shin
2012-08-25 1:23 ` Yinghai Lu
2012-08-25 4:25 ` Jacob Shin
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=20120825041542.GB26127@jshin-Toonie \
--to=jacob.shin@amd.com \
--cc=andreas.herrmann3@amd.com \
--cc=borislav.petkov@amd.com \
--cc=chaowang@redhat.com \
--cc=dyoung@redhat.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=tj@kernel.org \
--cc=vgoyal@redhat.com \
--cc=x86@kernel.org \
--cc=yinghai@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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;
as well as URLs for NNTP newsgroup(s).