| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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To properly pick up details like PTE_FLAGS_MASK.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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To properly pick up types relied on by prototypes like 'bool'.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into x86/headers
Conflicts:
arch/x86/include/asm/page.h
arch/x86/include/asm/pgtable.h
arch/x86/mach-voyager/voyager_smp.c
arch/x86/mm/fault.c
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pgtable*.h is intended for definitions relating to actual pagetables
and their entries, so move all the definitions for
(pte|pmd|pud|pgd)(val)?_t to the appropriate pgtable*.h headers.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
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The kernel tends to call definition-only headers *_types.h, so rename
the x86 page/pgtable headers accordingly.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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* commit 'remotes/tip/x86/paravirt': (175 commits)
xen: use direct ops on 64-bit
xen: make direct versions of irq_enable/disable/save/restore to common code
xen: setup percpu data pointers
xen: fix 32-bit build resulting from mmu move
x86/paravirt: return full 64-bit result
x86, percpu: fix kexec with vmlinux
x86/vmi: fix interrupt enable/disable/save/restore calling convention.
x86/paravirt: don't restore second return reg
xen: setup percpu data pointers
x86: split loading percpu segments from loading gdt
x86: pass in cpu number to switch_to_new_gdt()
x86: UV fix uv_flush_send_and_wait()
x86/paravirt: fix missing callee-save call on pud_val
x86/paravirt: use callee-saved convention for pte_val/make_pte/etc
x86/paravirt: implement PVOP_CALL macros for callee-save functions
x86/paravirt: add register-saving thunks to reduce caller register pressure
x86/paravirt: selectively save/restore regs around pvops calls
x86: fix paravirt clobber in entry_64.S
x86/pvops: add a paravirt_ident functions to allow special patching
xen: move remaining mmu-related stuff into mmu.c
...
Conflicts:
arch/x86/mach-voyager/voyager_smp.c
arch/x86/mm/fault.c
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'x86/uaccess' and 'x86/urgent' into x86/core
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Between 2.6.23 and 2.6.24-rc1 a change was made that broke IBM LS21
systems that had the HPET enabled in the BIOS, resulting in boot hangs
for x86_64.
Specifically commit b8ce33590687888ebb900d09557b8807c4539022, which
merges the i386 and x86_64 HPET code.
Prior to this commit, when we setup the HPET timers in x86_64, we did
the following:
hpet_writel(HPET_TN_ENABLE | HPET_TN_PERIODIC | HPET_TN_SETVAL |
HPET_TN_32BIT, HPET_T0_CFG);
However after the i386/x86_64 HPET merge, we do the following:
cfg = hpet_readl(HPET_Tn_CFG(timer));
cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC |
HPET_TN_SETVAL | HPET_TN_32BIT;
hpet_writel(cfg, HPET_Tn_CFG(timer));
However on LS21s with HPET enabled in the BIOS, the HPET_T0_CFG register
boots with Level triggered interrupts (HPET_TN_LEVEL) enabled. This
causes the periodic interrupt to be not so periodic, and that results in
the boot time hang I reported earlier in the delay calibration.
My fix: Always disable HPET_TN_LEVEL when setting up periodic mode.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: Flush the lazy MMU only once
Pending mmu updates only need to be flushed once to bring the
in-memory pagetable state up to date.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Impact: Catch cases where lazy MMU state is active in a preemtible context
arch_flush_lazy_mmu_cpu() has been changed to disable preemption so
the checks in enter/leave will never trigger. Put the preemtible()
check into arch_flush_lazy_mmu_cpu() to catch such cases.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Impact: avoid access to percpu vars in preempible context
They are intended to be used whenever there's the possibility
that there's some stale state which is going to be overwritten
with a queued update, or to force a state change when we may be
in lazy mode. Either way, we could end up calling it with
preemption enabled, so wrap the functions in their own little
preempt-disable section so they can be safely called in any
context (though preemption should never be enabled if we're actually
in a lazy state).
(Move out of line to avoid #include dependencies.)
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Jeff Mahoney reported:
> With Suse's hwinfo tool, on -tip:
> WARNING: at arch/x86/mm/pat.c:637 reserve_pfn_range+0x5b/0x26d()
reserve_pfn_range() is not tracking the memory range below 1MB
as non-RAM and as such is inconsistent with similar checks in
reserve_memtype() and free_memtype()
Rename the pagerange_is_ram() to pat_pagerange_is_ram() and add the
"track legacy 1MB region as non RAM" condition.
And also, fix reserve_pfn_range() to return -EINVAL, when the pfn
range is RAM. This is to be consistent with this API design.
Reported-and-tested-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: fix race leading to crash under KVM and Xen
The CPA code may be called while we're in lazy mmu update mode - for
example, when using DEBUG_PAGE_ALLOC and doing a slab allocation
in an interrupt handler which interrupted a lazy mmu update. In this
case, the in-memory pagetable state may be out of date due to pending
queued updates. We need to flush any pending updates before inspecting
the page table. Similarly, we must explicitly flush any modifications
CPA may have made (which comes down to flushing queued operations when
flushing the TLB).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Ptrace_detach() races with __ptrace_unlink() if the traced task is
reaped while detaching. This might cause a double-free of the BTS
buffer.
Change the ptrace_detach() path to only do the memory accounting in
ptrace_bts_detach() and leave the buffer free to ptrace_bts_untrace()
which will be called from __ptrace_unlink().
The fix follows a proposal from Oleg Nesterov.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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When probing the keyboard controller to enable A20, if we get FF back
(which is *possible* as a valid status word, but is extremely
unlikely) then bail after much fewer iterations than we otherwise
would, and abort the attempt to access the KBC.
This hopefully should make it work a lot better for embedded platforms
which don't have a KBC and where the BIOS doesn't implement
INT 15h AX=2401h (and doesn't boot with A20 already enabled.)
If this works, it will be the one remaining use of CONFIG_X86_ELAN as
anything other than a processor type optimization option.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Conflicts:
arch/x86/mm/fault.c
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Impact: cleanup
Introduce helper function fault_in_kernel_address() to make editors happy.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: widen debug checks
VirtualBox calls do_page_fault() from an atomic context but runs into a
might_sleep() way pas this point, cure that.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/core
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Impact: Cleans up printk formatting
When LOCAL APIC was calibrated, the debug message is displayed as follows.
CPU0: Intel(R) Xeon(R) CPU 5110 @ 1.60GHz stepping 06
Using local APIC timer interrupts.
calibrating APIC timer ...
... lapic delta = 3773131
... PM timer delta = 812434
APIC calibration not consistent with PM Timer: 226ms instead of 100ms
APIC delta adjusted to PM-Timer: 1662420 (3773131)
TSC delta adjusted to PM-Timer: 159592409 (362220564)
..... delta 1662420
..... mult: 71411249
..... calibration result: 265987
..... CPU clock speed is 1595.0924 MHz.
..... host bus clock speed is 265.0987 MHz.
There are three type of PM-Timer (PM-Timer, PM Timer, and PM timer),
in this message. This patch unifies those messages to PM-Timer.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: Fixes incorrect printk
LOCAL APIC is corrected by PM-Timer, when SMI occurred while LOCAL APIC is calibrated.
In this case, LOCAL APIC debug message(Boot with apic=debug) is displayed correctly,
however, CPU clock speed debug message is displayed wrongly .
When SMI occured on my machine, which has 1.6GHz CPU, CPU clock speed is displayed
3622.0205 MHz as follow.
CPU0: Intel(R) Xeon(R) CPU 5110 @ 1.60GHz stepping 06
Using local APIC timer interrupts.
calibrating APIC timer ...
... lapic delta = 3773130
... PM timer delta = 812434
APIC calibration not consistent with PM Timer: 226ms instead of 100ms
APIC delta adjusted to PM-Timer: 1662420 (3773130)
..... delta 1662420
..... mult: 71411249
..... calibration result: 265987
..... CPU clock speed is 3622.0205 MHz. =====> here
..... host bus clock speed is 265.0987 MHz.
This patch fixes to displaying CPU clock speed correctly as follow.
CPU0: Intel(R) Xeon(R) CPU 5110 @ 1.60GHz stepping 06
Using local APIC timer interrupts.
calibrating APIC timer ...
... lapic delta = 3773131
... PM timer delta = 812434
APIC calibration not consistent with PM Timer: 226ms instead of 100ms
APIC delta adjusted to PM-Timer: 1662420 (3773131)
TSC delta adjusted to PM-Timer: 159592409 (362220564)
..... delta 1662420
..... mult: 71411249
..... calibration result: 265987
..... CPU clock speed is 1595.0924 MHz.
..... host bus clock speed is 265.0987 MHz.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Impact: cleanup
Make the max_low_pfn logic a bit more standard between
lowmem_pfn_init() and highmem_pfn_init().
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Impact: cleanup
Split find_low_pfn_range() into two functions:
- lowmem_pfn_init()
- highmem_pfn_init()
The former gets called if all of RAM fits into lowmem,
otherwise we call highmem_pfn_init().
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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drivers/firmware/iscsi_ibft.c: In function ‘ibft_init’:
drivers/firmware/iscsi_ibft.c:942: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 2 has type ‘phys_addr_t’
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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drivers/net/sfc/falcon.c: In function ‘falcon_alloc_special_buffer’:
drivers/net/sfc/falcon.c:340: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 10 has type ‘phys_addr_t’
drivers/net/sfc/falcon.c: In function ‘falcon_free_special_buffer’:
drivers/net/sfc/falcon.c:355: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 10 has type ‘phys_addr_t’
drivers/net/sfc/falcon.c: In function ‘falcon_probe_port’:
drivers/net/sfc/falcon.c:2346: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 7 has type ‘phys_addr_t’
drivers/net/sfc/falcon.c: In function ‘falcon_probe_nic’:
drivers/net/sfc/falcon.c:2924: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 7 has type ‘phys_addr_t’
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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drivers/gpu/drm/drm_proc.c: In function ‘drm__vma_info’:
drivers/gpu/drm/drm_proc.c:681: warning: format ‘%08lx’ expects type ‘long unsigned int’, but argument 5 has type ‘phys_addr_t’
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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arch/x86/mm/init_32.c: In function ‘find_low_pfn_range’:
arch/x86/mm/init_32.c:696: warning: format ‘%u’ expects type ‘unsigned int’, but
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- pmd_flags() needs to be available on 2-levels too
- provide pud_large() wrapper as well
- include page.h - it provides basic types relied on by pgtable.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The p?d_page() methods still rely on highlevel types and methods:
In file included from arch/x86/kernel/early_printk.c:18:
/home/mingo/tip/arch/x86/include/asm/pgtable.h: In function ‘pmd_page’:
/home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function â__pfn_to_sectionâ
/home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: initialization makes pointer from integer without a cast
/home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function ‘__section_mem_map_addr’
/home/mingo/tip/arch/x86/include/asm/pgtable.h:516: error: return makes pointer from integer without a cast
So convert them to macros and document the type dependency.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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arch/x86/kernel/early_printk.c: In function ‘early_dbgp_init’:
arch/x86/kernel/early_printk.c:827: error: ‘PAGE_KERNEL_NOCACHE’ undeclared (first use in this function)
arch/x86/kernel/early_printk.c:827: error: (Each undeclared identifier is reported only once
arch/x86/kernel/early_printk.c:827: error: for each function it appears in.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into x86/headers
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Fix compile problem:
CC arch/x86/kernel/early_printk.o
In file included from /home/jeremy/hg/xen/paravirt/linux/arch/x86/kernel/early_printk.c:17:
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pmd_page':
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function '__pfn_to_section'
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: warning: initialization makes pointer from integer without a cast
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: error: implicit declaration of function '__section_mem_map_addr'
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:516: warning: return makes pointer from integer without a cast
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pud_page':
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:586: warning: initialization makes pointer from integer without a cast
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:586: warning: return makes pointer from integer without a cast
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h: In function 'pgd_page':
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:625: warning: initialization makes pointer from integer without a cast
/home/jeremy/hg/xen/paravirt/linux/arch/x86/include/asm/pgtable.h:625: warning: return makes pointer from integer without a cast
This is a cycling dependency between asm/pgtable.h and linux/mmzone.h
when using CONFIG_SPARSEMEM. Rather than hacking up the headers some
more, remove asm/pgtable.h, since early_printk.c doesn't actually need
it.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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Impact: unify identical code
asm/io_32.h and _64.h have identical prototypes for the ioremap family
of functions. The 32-bit header had a more descriptive comment.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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Impact: unify identical code
asm/io_32.h and _64.h has functionally identical definitions for
virt_to_phys, phys_to_virt, page_to_phys, and the isa_* variants, so
just unify them.
The only slightly functional change is using phys_addr_t for the
physical address argument and return val.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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The _none test is done differently for every level of the pagetable.
Standardize them by:
1: Use the native_X_val to extract the raw entry, with no need to go
via paravirt_ops, diff -r 1d0646d0d319 arch/x86/include/asm/pgtable.h, and
2: Compare with 0 rather than using a boolean !, since they are actually values
and not booleans.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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