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* [PATCH 0/4 -v3]  x86, head_32: Some cleanups
@ 2013-02-11 14:22 Borislav Petkov
  2013-02-11 14:22 ` [PATCH 1/4] x86, head_32: Remove i386 pieces Borislav Petkov
                   ` (4 more replies)
  0 siblings, 5 replies; 14+ messages in thread
From: Borislav Petkov @ 2013-02-11 14:22 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

Hi,

this is the new version with patch 5 from the old transformed into an
expanded, more verbose comment at the beginning of default_entry. No
changes otherwise.


Changelog:

v2:

Here's the next version with new_cpu_data left put and two minor fixlets
added at the end. The patchset was boot-tested on a bunch of baremetal
boxes and all QEMU cpu models - no issues.

Boot tests:

* baremetal:
- P4
- Atom n270
- 32-bit kernel on an AMD64 (F10h Phenom and Intel SNB)

* qemu, with cpu models:
 - qemu64
 - phenom
 - core2duo
 - kvm64
 - qemu32
 - kvm32
 - coreduo
 - 486{,SX}
 - pentium{,2,3}
 - athlon
 - n270,+movbe
 - Conroe
 - Penryn
 - Nehalem
 - Westmere
 - SandyBridge
 - Haswell
 - Opteron_G{1,2,3,4,5}

Why am I testing all those, you ask? Because I'm a sadistic mofo :-)

v1:

here are some initial low-hanging fruits wrt head_32.S cleanup. I've
made them as easily digestible as possible; after all, this is boot asm
and meddling with it tends to upset kernels.

Also, I've made the assumption that having boot_cpu_data.cpuid_level
contain the CPUID level for the boot cpu means that the APs have the
same CPUID level. This should be the case on X86.

They boot fine 486 and 486SX in qemu but I'd like to hear whether
the direction I'm going is ok before I continue testing them on real
hardware.

Borislav Petkov (4):
  x86, head_32: Remove i386 pieces
  x86: Detect CPUID support early at boot
  x86, head_32: Remove second CPUID detection from default_entry
  x86, head_32: Give the 6 label a real name

 arch/x86/kernel/head_32.S | 93 ++++++++++++++++++-----------------------------
 1 file changed, 36 insertions(+), 57 deletions(-)

-- 
1.8.1.3.535.ga923c31


^ permalink raw reply	[flat|nested] 14+ messages in thread
* [PATCH 0/4] x86, head_32: Some cleanups
@ 2013-02-03 16:14 Borislav Petkov
  2013-02-03 16:14 ` [PATCH 2/4] x86: Detect CPUID support early at boot Borislav Petkov
  0 siblings, 1 reply; 14+ messages in thread
From: Borislav Petkov @ 2013-02-03 16:14 UTC (permalink / raw)
  To: H. Peter Anvin; +Cc: X86 ML, LKML, Borislav Petkov

From: Borislav Petkov <bp@suse.de>

Hi,

here are some initial low-hanging fruits wrt head_32.S cleanup. I've
made them as easily digestible as possible; after all, this is boot asm
and meddling with it tends to upset kernels.

Also, I've made the assumption that having boot_cpu_data.cpuid_level
contain the CPUID level for the boot cpu means that the APs have the
same CPUID level. This should be the case on X86.

They boot fine 486 and 486SX in qemu but I'd like to hear whether
the direction I'm going is ok before I continue testing them on real
hardware.

Thanks.


Borislav Petkov (4):
  x86, head_32: Remove i386 pieces
  x86: Detect CPUID support early at boot
  x86, head_32: Remove CPUID detection from default_entry
  x86, 32-bit: Drop new_cpu_data

 arch/x86/include/asm/processor.h |   1 -
 arch/x86/kernel/head_32.S        | 105 ++++++++++++++++-----------------------
 arch/x86/kernel/setup.c          |   3 --
 arch/x86/lguest/boot.c           |   6 +--
 arch/x86/xen/enlighten.c         |   8 +--
 5 files changed, 51 insertions(+), 72 deletions(-)

-- 
1.8.1.2.422.g08c0e7f


^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2013-02-13  0:13 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-02-11 14:22 [PATCH 0/4 -v3] x86, head_32: Some cleanups Borislav Petkov
2013-02-11 14:22 ` [PATCH 1/4] x86, head_32: Remove i386 pieces Borislav Petkov
2013-02-13  0:07   ` [tip:x86/asm] " tip-bot for Borislav Petkov
2013-02-11 14:22 ` [PATCH 2/4] x86: Detect CPUID support early at boot Borislav Petkov
2013-02-13  0:09   ` [tip:x86/asm] " tip-bot for Borislav Petkov
2013-02-11 14:22 ` [PATCH 3/4] x86, head_32: Remove second CPUID detection from default_entry Borislav Petkov
2013-02-11 15:49   ` H. Peter Anvin
2013-02-11 17:15     ` Borislav Petkov
2013-02-11 17:21       ` H. Peter Anvin
2013-02-13  0:10   ` [tip:x86/asm] " tip-bot for Borislav Petkov
2013-02-11 14:22 ` [PATCH 4/4] x86, head_32: Give the 6 label a real name Borislav Petkov
2013-02-13  0:11   ` [tip:x86/asm] " tip-bot for Borislav Petkov
2013-02-11 16:56 ` [PATCH 0/4 -v3] x86, head_32: Some cleanups H. Peter Anvin
  -- strict thread matches above, loose matches on Subject: below --
2013-02-03 16:14 [PATCH 0/4] " Borislav Petkov
2013-02-03 16:14 ` [PATCH 2/4] x86: Detect CPUID support early at boot Borislav Petkov

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