linux-kernel - [PATCHv2 0/4] x86, entry: some cleanup and simplification...

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Date:	Sun, 18 Jan 2015 12:45:16 +0100
From:	Alexander van Heukelum <heukelum@...tmail.fm>
To:	Andy Lutomirski <luto@...capital.net>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Oleg Nesterov <oleg@...hat.com>, Borislav Petkov <bp@...e.de>,
	Rik van Riel <riel@...hat.com>
Subject: [PATCHv2 0/4] x86, entry: some cleanup and simplification...

Hi Andy,

The last patchset did not compile on i386. Please ignore it. This one
should be better. Instead of removing KERNEL_STACK_OFFSET, it is now
used consistently on both i386 and x86_64.

Boot tested using qemu (using klibc for userspace)
	- x86_64, 32-bit userspace, core2duo (sysenter32)
	- x86_64, 32-bit userspace, phenom (syscall32)
	- x86_64, 32-bit userspace, vdso=0 (int 0x80)
	- x86_64, 64-bit userspace
	- i386, pentium3 (sysenter)
	- i386, athlon (syscall)
	- i386, vdso=0 (int 0x80)

They were tested on top of 22f2aa4a0361707a5cfb1de9d45260b39965dead
(x86/entry-devel in your tree) and this kernel is now running on my
laptop.

Greetings,
   Alexander

Alexander van Heukelum (4):
  x86_64: cleanup THREAD_INFO(reg,offset) macro
  x86_64: embrace KERNEL_STACK_OFFSET
  i386: clean up KERNEL_STACK_OFFSET
  x86_64, entry: Create IRET-compatible stack frame at syscall entry

 arch/x86/ia32/ia32entry.S          | 33 ++++++++--------
 arch/x86/include/asm/calling.h     |  1 +
 arch/x86/include/asm/processor.h   | 43 ++++++++-------------
 arch/x86/include/asm/thread_info.h | 17 +++++++-
 arch/x86/kernel/entry_32.S         |  5 ++-
 arch/x86/kernel/entry_64.S         | 79 +++++++++++---------------------------
 arch/x86/kernel/process_64.c       |  5 +--
 7 files changed, 75 insertions(+), 108 deletions(-)

-- 
2.1.0

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