05 Sep, 2005
40 commits
-
i386 inline assembler cleanup.
This change encapsulates descriptor and task register management. Also,
it is possible to improve assembler generation in two cases; savesegment
may store the value in a register instead of a memory location, which
allows GCC to optimize stack variables into registers, and MOV MEM, SEG
is always a 16-bit write to memory, making the casting in math-emu
unnecessary.Signed-off-by: Zachary Amsden
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
i386 arch cleanup. Introduce the serialize macro to serialize processor
state. Why the microcode update needs it I am not quite sure, since wrmsr()
is already a serializing instruction, but it is a microcode update, so I will
keep the semantic the same, since this could be a timing workaround. As far
as I can tell, this has always been there since the original microcode update
source.Signed-off-by: Zachary Amsden
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
i386 Inline asm cleanup. Use cr/dr accessor functions.
Also, a potential bugfix. Also, some CR accessors really should be volatile.
Reads from CR0 (numeric state may change in an exception handler), writes to
CR4 (flipping CR4.TSD) and reads from CR2 (page fault) prevent instruction
re-ordering. I did not add memory clobber to CR3 / CR4 / CR0 updates, as it
was not there to begin with, and in no case should kernel memory be clobbered,
except when doing a TLB flush, which already has memory clobber.I noticed that page invalidation does not have a memory clobber. I can't find
a bug as a result, but there is definitely a potential for a bug here:#define __flush_tlb_single(addr) \
__asm__ __volatile__("invlpg %0": :"m" (*(char *) addr))Signed-off-by: Zachary Amsden
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This makes the vDSO use nops for all its padding around instructions,
rather than sometimes zeros, and nop-pads the end of the area containing
instructions to a 32-byte cache line, to keep text and data in separate
lines.Signed-off-by: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is subarch update for ES7000. I've modified platform check code and
removed unnecessary OEM table parsing for newer systems that don't use OEM
information during boot. Parsing the table in fact is causing problems,
and the platform doesn't get recognized. The patch only affects the ES7000
subach.Signed-off-by:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The VIA VT8237's IOAPIC sends 'APIC De-Assert Messages' by default, causing
another CPU interrupt when the IRQ pin is de-asserted. This feature is
switched off by the patch to get rid of doubled ioapic level interrupt
rates.Signed-off-by: Karsten Wiese
Tested-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
i386 generic subarchitecture requires explicit dmi strings or command line
to enable bigsmp mode. The patch below removes that restriction, and uses
bigsmp as soon as it finds more than 8 logical CPUs, Intel processors and
xAPIC support.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
o With introduction of kexec as boot-loader, the assumption that parameter
segment will always be loaded at lower address than kernel and will be
addressable by early bootup page tables is no longer valid. In kexec on
panic case parameter segment might well be loaded beyond kernel image and
might not be addressable by early boot page tables.
o This case might hit in the scenario where user has reserved a chunk of
memory for second kernel, for example 16MB to 64MB, and has also built
second kernel for physical memory location 16MB. In this case kexec has no
choice but to load the parameter segment at a higher address than new kernel
image at safe location where new kernel does not stomp it.
o Though problem should automatically go away once relocatable kernel for i386
is in place and kexec can determine the location of new kernel at run time
and load parameter segment at lower address than kernel image. But till then
this patch can go in (assuming it does not break something else).
o This patch moves up the boot parameter saving code. Now boot parameters
are copied out in protected mode before page tables are initialized. This
will ensure that parameter segment is always addressable irrespective of
its physical location.Signed-off-by: Vivek Goyal
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If the virtual 86 machine reaches an instruction which raises a General
Protection Fault (such as CLI or STI), the instruction is emulated (in
handle_vm86_fault). However, the emulation ignored the TF bit, so the
hardware debug interrupt was not invoked after such an emulated instruction
(and the DOS debugger missed it).This patch fixes the problem by emulating the hardware debug interrupt as
the last action before control is returned to the VM86 program.Signed-off-by: Petr Tesarik
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The memory descriptors that comprise the EFI memory map are not fixed in
stone such that the size could change in the future. This uses the memory
descriptor size obtained from EFI to iterate over the memory map entries
during boot. This enables the removal of an x86 specific pad (and ifdef)
in the EFI header. I also couldn't stomach the broken up nature of the
function to put EFI runtime calls into virtual mode any longer so I fixed
that up a bit as well.For reference, this patch only impacts x86.
Signed-off-by: Matt Tolentino
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Only use read_timer_tsc only when CPU has TSC. Thanks to Andrea for
pointing this out. Should not be issue on any platforms as all recent
systems that has HPET also has CPUs that supports TSC. The patch is still
required for correctness.Signed-off-by: Venkatesh Pallipadi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch pushes the creation of a rare signal frame (SIGBUS or SIGSEGV)
into a separate function, thus saving stackspace in the main
do_page_fault() stackframe. The effect is 132 bytes less of stack used by
the typical do_page_fault() invocation - resulting in a denser
cache-layout.(Another minor effect is that in case of kernel crashes that come from a
pagefault, we add less space to the already existing frame, giving the
crash functions a slightly higher chance to do their stuff without
overflowing the stack.)(The changes also result in slightly cleaner code.)
argument bugfix from "Guillaume C."
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The LOG_BUF_SHIFT from lib/Kconfig.debug is sufficient.
Signed-off-by: Adrian Bunk
Acked-by: Paul Mundt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extend the compat mode kludgeology in envdev to cover MIPS as well.
Or why we should need something like is_compat_task() ...
Signed-off-by: Ralf Baechle
Cc: Vojtech Pavlik
Signed-off-by: Dmitry Torokhov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
vr41xx doesn't need mach-vr41xx/timex.h. This patch has removed
mach-vr41xx/timex.h.Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has fixed the following warnings.
arch/mips/kernel/genex.S:250:5: warning: "CONFIG_64BIT" is not defined
arch/mips/math-emu/cp1emu.c:1128:5: warning: "__mips64" is not defined
arch/mips/math-emu/cp1emu.c:1206:5: warning: "__mips64" is not defined
arch/mips/math-emu/cp1emu.c:1270:5: warning: "__mips64" is not defined
arch/mips/math-emu/cp1emu.c:323:5: warning: "__mips64" is not defined
arch/mips/math-emu/cp1emu.c:808:5: warning: "__mips64" is not defined
arch/mips/math-emu/cp1emu.c:953:5: warning: "__mips64" is not defined
arch/mips/mm/tlbex.c:519:5: warning: "CONFIG_64BIT" is not defined
include/asm/reg.h:73:5: warning: "CONFIG_64BIT" is not definedSigned-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The addtion of SYS_SUPPORTS_*_KERNEL and CPU_SUPPORTS_*_KERNEL is halfway.
This patch has added more SYS_SUPPORTS_*_KERNEL and CPU_SUPPORTS_*_KERNEL
to arch/mips/Kconfig. Please apply.Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has added pcibios_bus_to_resource to MIPS.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add pcibios_select_root to MIPS.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the MIPS coherency configuration such that we always keep the mapping
state in when we need to on non-coherent platforms.Signed-off-by: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Start cleaning 32-bit vs. 64-bit configuration.
Signed-off-by: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has changed from VR41XX to VR4100 series in arch/mips/Kconfig.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has removed obsolete VRC4171 config.
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
$ make menuconfig
scripts/kconfig/mconf arch/i386/Kconfig
drivers/char/Kconfig:847:warning: 'select' used by config symbol
'TANBAC_TB0219' refer to undefined symbol 'PCI_VR41XX'Here is a patch for this warning fix.
Signed-off-by: Yoichi Yuasa
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has added default select configs for vr41xx.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has added TANBAC VR4131 multichip module in arch/mips/Kconfig
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- MIPS Denmark does no longer exist; the PCI vendor ID is now owned by
MIPS Technologies.- Add ID for SOC-it, MIPS's system controller.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for the virtual MIPS system that is emulated by Qemu. See
http://www.linux-mips.org/wiki/Qemu for a detailed current status.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Revive HX frame buffer support for 2.6.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Rewrite PMAG BA frame buffer driver for 2.6.
Acked-by: Antonino Daplas
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Get it working again.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the one file which managed to survive the removel of HP Laserjet
support.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Adrian Bunk
Cc: Yoichi Yuasa
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We also need this patch for removing mips vr4181.
Signed-off-by: Yoichi Yuasa
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There seem to be no more users or interest in the NEC Osprey evaluation
system for the NEC VR4181 SOC which is an old part anyway, so remove the
code. More information on the Osprey can be found at
http://www.linux-mips.org/wiki/Osprey.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has changed system type name in proc for vr41xx.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has updated IRQ handling for vr41xx.
o added common IRQ dispatch
o changed IRQ number in int-handler.S
o added resource management to icu.cSigned-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch has removed obsolete GIU function call for vr41xx.
Signed-off-by: Yoichi Yuasa
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
