linux-toradex.git/arch/x86/boot/bioscall.S, branch v5.1 Linux kernel for Apalis and Colibri modules x86, boot: Move intcall() to the .inittext section 2014-01-04T22:29:08+00:00 H. Peter Anvin hpa@linux.intel.com 2014-01-04T22:29:08+00:00 6f34152f54bcf63a49ea701643c81f5b2168fec8 The .inittext section tries to aggregate all functions which are needed to get a message out in the case of a load failure. However, putchar() uses intcall(), so intcall() should be in the .inittext section. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Link: http://lkml.kernel.org/n/tip-twxm8igouzbmsklmf6lfyq0w@git.kernel.org 
The .inittext section tries to aggregate all functions which are
needed to get a message out in the case of a load failure.  However,
putchar() uses intcall(), so intcall() should be in the .inittext
section.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-twxm8igouzbmsklmf6lfyq0w@git.kernel.org
x86, boot: Use .code16 instead of .code16gcc 2014-01-04T21:59:06+00:00 David Woodhouse dwmw2@infradead.org 2014-01-03T22:30:42+00:00 e24df921af484e9b7095ee06d236dabdb3bd9c1c This reverts commit 28b48688 ("x86, boot: use .code16gcc instead of .code16"). Versions of binutils older than 2.16 are already not working, so this workaround is no longer necessary either. At the same time, some of the transformations that .code16gcc does can be *extremely* counterintuitive to a human programmer. [ hpa: folded ret -> retl and call -> calll fixes from followup patch ] Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Link: http://lkml.kernel.org/r/1388788242.2391.75.camel@shinybook.infradead.org Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> 
This reverts commit 28b48688 ("x86, boot: use .code16gcc instead
of .code16").

Versions of binutils older than 2.16 are already not working, so this
workaround is no longer necessary either.  At the same time, some of
the transformations that .code16gcc does can be *extremely*
counterintuitive to a human programmer.

[ hpa: folded ret -> retl and call -> calll fixes from followup patch ]

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Link: http://lkml.kernel.org/r/1388788242.2391.75.camel@shinybook.infradead.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
x86, boot: use .code16gcc instead of .code16 2009-06-17T00:47:32+00:00 H. Peter Anvin hpa@zytor.com 2009-06-17T00:39:04+00:00 28b4868820a56de661f54742ff91b78e12f1e582 Use .code16gcc to compile arch/x86/boot/bioscall.S rather than .code16, since some older versions of binutils can't generate 32-bit addressing expressions (67 prefixes) in .code16 mode, only in .code16gcc mode. Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Use .code16gcc to compile arch/x86/boot/bioscall.S rather than
.code16, since some older versions of binutils can't generate 32-bit
addressing expressions (67 prefixes) in .code16 mode, only in
.code16gcc mode.

Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
x86, setup: fix comment in the "glove box" code 2009-04-12T05:24:05+00:00 H. Peter Anvin hpa@zytor.com 2009-04-12T05:24:05+00:00 cf9972a921470b0a2da7906104bcd540b20e33bf Impact: Comment change only The glove box is about avoiding problems with *registers* being touched, not *memory*. Signed-off-by: H. Peter Anvin <hpa@zytor.com> 
Impact: Comment change only

The glove box is about avoiding problems with *registers* being
touched, not *memory*.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
x86, setup: "glove box" BIOS calls -- infrastructure 2009-04-09T23:08:11+00:00 H. Peter Anvin hpa@linux.intel.com 2009-04-02T01:08:28+00:00 7a734e7dd93b9aea08ed51036a9a0e2c9dfd8dac Impact: new interfaces (not yet used) For all the platforms out there, there is an infinite number of buggy BIOSes. This adds infrastructure to treat BIOS interrupts more like toxic waste and "glove box" them -- we switch out the register set, perform the BIOS interrupt, and then restore the previous state. LKML-Reference: <49DE7F79.4030106@zytor.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Rafael J. Wysocki <rjw@sisk.pl> 
Impact: new interfaces (not yet used)

For all the platforms out there, there is an infinite number of buggy
BIOSes.  This adds infrastructure to treat BIOS interrupts more like
toxic waste and "glove box" them -- we switch out the register set,
perform the BIOS interrupt, and then restore the previous state.

LKML-Reference: <49DE7F79.4030106@zytor.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rjw@sisk.pl>