All of lore.kernel.org
 help / color / mirror / Atom feed
From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org,
	Oleg Nesterov <oleg@redhat.com>,
	Denys Vlasenko <dvlasenk@redhat.com>
Subject: Re: [PATCH 2/3] x86: Unify and fix init sp0
Date: Wed, 11 Mar 2015 12:21:07 +0100	[thread overview]
Message-ID: <20150311112107.GC16419@pd.tnic> (raw)
In-Reply-To: <1b810c1d2e797e27bb4a7708c426101161edd1f6.1426009661.git.luto@amacapital.net>

On Tue, Mar 10, 2015 at 11:05:59AM -0700, Andy Lutomirski wrote:
> x86_32 and x86_64 need slightly different sp0 values, and x86_32's was
> incorrect for init.  (This never mattered -- the init thread never
> runs user code, so we never used sp0 for anything.)

Damn old x86 cruft - sp0 is the stack pointer for CPL0 in the TSS. Had
to go dig that out.

> Fix it and mostly unify them.
> 
> Signed-off-by: Andy Lutomirski <luto@amacapital.net>

Acked-by: Borislav Petkov <bp@suse.de>

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
--

  reply	other threads:[~2015-03-11 11:22 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-10 18:05 [PATCH 0/3] sp0, ss1, and sp1 docs and minor fixes Andy Lutomirski
2015-03-10 18:05 ` [PATCH 1/3] x86: Create and use a TOP_OF_KERNEL_STACK_PADDING macro Andy Lutomirski
2015-03-10 19:22   ` Denys Vlasenko
2015-03-10 19:47     ` Andy Lutomirski
2015-03-13 14:08     ` Denys Vlasenko
2015-03-16  8:56   ` Ingo Molnar
2015-03-16 12:08   ` [tip:x86/asm] x86/asm/entry: Create and use a ' TOP_OF_KERNEL_STACK_PADDING' macro tip-bot for Andy Lutomirski
2015-03-17  8:45   ` tip-bot for Andy Lutomirski
2015-03-10 18:05 ` [PATCH 2/3] x86: Unify and fix init sp0 Andy Lutomirski
2015-03-11 11:21   ` Borislav Petkov [this message]
2015-03-16 12:09   ` [tip:x86/asm] x86/asm/entry: Unify and fix initial thread_struct: :sp0 values tip-bot for Andy Lutomirski
2015-03-17  8:45   ` tip-bot for Andy Lutomirski
2015-03-10 18:06 ` [PATCH 3/3] x86_32: Document our abuse of ss1 and sp1 Andy Lutomirski
2015-03-10 19:13   ` Denys Vlasenko
2015-03-10 20:06     ` Andy Lutomirski
2015-03-10 20:52       ` Denys Vlasenko
2015-03-16 12:09   ` [tip:x86/asm] x86/asm/entry/32: Document our abuse of x86_hw_tss: :ss1 and x86_hw_tss::sp1 tip-bot for Andy Lutomirski
2015-03-16 15:36     ` Andy Lutomirski
2015-03-17  8:45   ` tip-bot for Andy Lutomirski

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=20150311112107.GC16419@pd.tnic \
    --to=bp@alien8.de \
    --cc=dvlasenk@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=oleg@redhat.com \
    --cc=x86@kernel.org \
    --subject='Re: [PATCH 2/3] x86: Unify and fix init sp0' \
    /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

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.