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Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core

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This commit is contained in:
Ingo Molnar 2008-12-23 16:27:23 +01:00
commit fa623d1b02
173 changed files with 4121 additions and 3195 deletions
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6
Documentation/x86/boot.txt
View file

@ -349,7 +349,7 @@ Protocol: 2.00+
3 SYSLINUX
4 EtherBoot
5 ELILO
7 GRuB
7 GRUB
8 U-BOOT
9 Xen
A Gujin
@ -537,8 +537,8 @@ Type: read
Offset/size: 0x248/4
Protocol: 2.08+
If non-zero then this field contains the offset from the end of the
real-mode code to the payload.
If non-zero then this field contains the offset from the beginning
of the protected-mode code to the payload.
The payload may be compressed. The format of both the compressed and
uncompressed data should be determined using the standard magic

24
Documentation/x86/pat.txt
View file

@ -80,6 +80,30 @@ pci proc | -- | -- | WC |
| | | |
-------------------------------------------------------------------
Advanced APIs for drivers
-------------------------
A. Exporting pages to users with remap_pfn_range, io_remap_pfn_range,
vm_insert_pfn
Drivers wanting to export some pages to userspace do it by using mmap
interface and a combination of
1) pgprot_noncached()
2) io_remap_pfn_range() or remap_pfn_range() or vm_insert_pfn()
With PAT support, a new API pgprot_writecombine is being added. So, drivers can
continue to use the above sequence, with either pgprot_noncached() or
pgprot_writecombine() in step 1, followed by step 2.
In addition, step 2 internally tracks the region as UC or WC in memtype
list in order to ensure no conflicting mapping.
Note that this set of APIs only works with IO (non RAM) regions. If driver
wants to export a RAM region, it has to do set_memory_uc() or set_memory_wc()
as step 0 above and also track the usage of those pages and use set_memory_wb()
before the page is freed to free pool.
Notes:
-- in the above table mean "Not suggested usage for the API". Some of the --'s

11
Documentation/x86/x86_64/boot-options.txt
View file

@ -79,17 +79,6 @@ Timing
Report when timer interrupts are lost because some code turned off
interrupts for too long.
nmi_watchdog=NUMBER[,panic]
NUMBER can be:
0 don't use an NMI watchdog
1 use the IO-APIC timer for the NMI watchdog
2 use the local APIC for the NMI watchdog using a performance counter. Note
This will use one performance counter and the local APIC's performance
vector.
When panic is specified panic when an NMI watchdog timeout occurs.
This is useful when you use a panic=... timeout and need the box
quickly up again.
nohpet
Don't use the HPET timer.

2
Documentation/x86/x86_64/mm.txt
View file

@ -6,7 +6,7 @@ Virtual memory map with 4 level page tables:
0000000000000000 - 00007fffffffffff (=47 bits) user space, different per mm
hole caused by [48:63] sign extension
ffff800000000000 - ffff80ffffffffff (=40 bits) guard hole
ffff810000000000 - ffffc0ffffffffff (=46 bits) direct mapping of all phys. memory
ffff880000000000 - ffffc0ffffffffff (=57 TB) direct mapping of all phys. memory
ffffc10000000000 - ffffc1ffffffffff (=40 bits) hole
ffffc20000000000 - ffffe1ffffffffff (=45 bits) vmalloc/ioremap space
ffffe20000000000 - ffffe2ffffffffff (=40 bits) virtual memory map (1TB)