This provides the low-level support for MMIO emulation in Book3S HV
guests. When the guest tries to map a page which is not covered by
any memslot, that page is taken to be an MMIO emulation page. Instead
of inserting a valid HPTE, we insert an HPTE that has the valid bit
clear but another hyperv
At present, our implementation of H_ENTER only makes one try at locking
each slot that it looks at, and doesn't even retry the ldarx/stdcx.
atomic update sequence that it uses to attempt to lock the slot. Thus
it can return the H_PTEG_FULL error unnecessarily, particularly when
the H_EXACT flag is
This adds an array that parallels the guest hashed page table (HPT),
that is, it has one entry per HPTE, used to store the guest's view
of the second doubleword of the corresponding HPTE. The first
doubleword in the HPTE is the same as the guest's idea of it, so we
don't need to store a copy, but
This series of patches updates the Book3S-HV KVM code that manages the
guest hashed page table (HPT) to enable several things:
* MMIO emulation and MMIO pass-through
* Use of small pages (4kB or 64kB, depending on config) to back the
guest memory
* Pageable guest memory - i.e. backing pages ca
This removes the code from kvmppc_core_prepare_memory_region() that
looked up the VMA for the region being added and called hva_to_page
to get the pfns for the memory. We have no guarantee that there will
be anything mapped there at the time of the KVM_SET_USER_MEMORY_REGION
ioctl call; userspace
This allocates an array for each memory slot that is added to store
the physical addresses of the pages in the slot. This array is
vmalloc'd and accessed in kvmppc_h_enter using real_vmalloc_addr().
This allows us to remove the ram_pginfo field from the kvm_arch
struct, and removes the 64GB guest
This expands the reverse mapping array to contain two links for each
HPTE which are used to link together HPTEs that correspond to the
same guest logical page. Each circular list of HPTEs is pointed to
by the rmap array entry for the guest logical page, pointed to by
the relevant memslot. Links a
This adds two new functions, kvmppc_pin_guest_page() and
kvmppc_unpin_guest_page(), and uses them to pin the guest pages where
the guest has registered areas of memory for the hypervisor to update,
(i.e. the per-cpu virtual processor areas, SLB shadow buffers and
dispatch trace logs) and then unpin
This adds an smp_wmb in kvm_mmu_notifier_invalidate_range_end() and an
smp_rmb in mmu_notifier_retry() so that mmu_notifier_retry() will give
the correct answer when called without kvm->mmu_lock being held.
PowerPC Book3S HV KVM wants to use a bitlock per guest page rather than
a single global spin
This provides for the case where userspace maps an I/O device into the
address range of a memory slot using a VM_PFNMAP mapping. In that
case, we work out the pfn from vma->vm_pgoff, and record the cache
enable bits from vma->vm_page_prot in two low-order bits in the
slot_phys array entries. Then
With this, if a guest does an H_ENTER with a read/write HPTE on a page
which is currently read-only, we make the actual HPTE inserted be a
read-only version of the HPTE. We now intercept protection faults as
well as HPTE not found faults, and for a protection fault we work out
whether it should be
This moves the get/set_one_reg implementation down from powerpc.c into
booke.c, book3s_pr.c and book3s_hv.c. This avoids #ifdefs in C code,
but more importantly, it fixes a bug on Book3s HV where we were
accessing beyond the end of the kvm_vcpu struct (via the to_book3s()
macro) and corrupting mem
This adds the infrastructure to enable us to page out pages underneath
a Book3S HV guest, on processors that support virtualized partition
memory, that is, POWER7. Instead of pinning all the guest's pages,
we now look in the host userspace Linux page tables to find the
mapping for a given guest pa
This relaxes the requirement that the guest memory be provided as
16MB huge pages, allowing it to be provided as normal memory, i.e.
in pages of PAGE_SIZE bytes (4k or 64k). To allow this, we index
the kvm->arch.slot_phys[] arrays with a small page index, even if
huge pages are being used, and use
At present, on the powernv platform, if you off-line a CPU that was
online, and then try to on-line it again, the kernel generates a
warning message "OPAL Error -1 starting CPU n". Furthermore, if the
CPU is a secondary thread that was used by KVM while it was off-line,
the CPU fails to come onlin
This fixes a problem where a CPU thread coming out of nap mode can
think it has valid values in the nonvolatile GPRs (r14 - r31) as saved
away in power7_idle, but in fact the values have been trashed because
the thread was used for KVM in the mean time. The result is that the
thread crashes becaus
I'm not sure why yet, but commit 8a97c432 ("KVM: PPC: booke: Improve
timer register emulation") in Alex's kvm-ppc-next branch is breaking
Book3S HV KVM on POWER7. Guest cpus fail to spin up, and even with
just one cpu, the guest stalls every so often. If I stop the guest
and inspect the state wit
3.2.0-rc3-next-20111202 with CONFIG_DEBUG_PREEMPT=y gives me lots of
Dec 4 20:03:19 thorn kernel: BUG: using smp_processor_id() in preemptible
[] code: startpar/1365
Dec 4 20:03:19 thorn kernel: caller is .arch_local_irq_restore+0x44/0x90
Dec 4 20:03:19 thorn kernel: Call Trace:
Dec 4
Kumar Gala wrote:
> look at how mpc8572ds handles 36b.dts we put common definitions in a shared
> file.
Ok, I've made those changes, but when I boot the kernel, I'm seeing this. Can
you give me a clue as to what's wrong?
PCI: Probing PCI hardware
Replaces pair dma_alloc_coherent()+memset() with new dma_zalloc_coherent()
added by Andrew Morton for kernel version 3.2
Signed-off-by: Alexandre Bounine
---
drivers/rapidio/devices/tsi721.c | 17 -
1 files changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/rapidio
On 12/05/2011 08:02 AM, Alexander Lyasin wrote:
> In reply to your Service Request SR 1-807899446:
>
> Yes, due to several design peculiarities in local bus nand controller,
> simultaneous accesses to nand flash and to other local bus memory
> controller may cause nand flash controller access fail
Hello,
I've got problem with sound on my Powerbook G4 Titanium
(PowerBook3,5). Sound always cranks and skips when I moving my
touchpad, regardless of the source of sound. It happens in all my
programs, including vlc, mplayer, e-uae and ioquake3 - they show in
the log messeges like "underrun occure
On 12/05/2011 12:47 AM, Artem Bityutskiy wrote:
> On Sun, 2011-12-04 at 12:31 +0800, shuo@freescale.com wrote:
>> +/*
>> + * Freescale FCM controller has a 2K size limitation of buffer
>> + * RAM, so elbc_fcm_ctrl->buffer have to be used if writesize
>> +
On 12/05/2011 04:54 AM, Shengzhou Liu wrote:
> There was a bug for fmr initialization, which lead to fmr was always 0x100
> in fsl_elbc_chip_init() and caused FCM command timeout before calling
> fsl_elbc_chip_init_tail().
>
> Signed-off-by: Shengzhou Liu
> ---
> drivers/mtd/nand/fsl_elbc_nand.
On Dec 5, 2011, at 12:41 PM, Moffett, Kyle D wrote:
> On Dec 03, 2011, at 10:53, Kumar Gala wrote:
>> On Dec 2, 2011, at 10:27 AM, Kyle Moffett wrote:
>>> Instead of using the open-coded "reg" property lookup and address
>>> translation in mpic_alloc(), directly call of_address_to_resource().
>>>
On Dec 03, 2011, at 10:53, Kumar Gala wrote:
> On Dec 2, 2011, at 10:27 AM, Kyle Moffett wrote:
>> Instead of using the open-coded "reg" property lookup and address
>> translation in mpic_alloc(), directly call of_address_to_resource().
>> This includes various workarounds for special cases which t
The commit 883c2cfc8bcc0fd00c5d9f596fb8870f481b5bda:
"fix of_flat_dt_is_compatible() to match the full compatible string"
causes silent boot death on the sbc8349 board because it was
just looking for 8349 and not 8349E -- as originally there
were non-E (no SEC/encryption) chips available. Just
Dear Kumar Gala!
Our company is a client Freescale company, we use mpc8308, mpc8321 and other
microprocessors.
I have a board on the mpc8308 chip. This board runs the Linux kernel.
On this board there is NAND flash and DSP proc. on the Local Bus.
Chunk from DTS-file is below:
localbus@e
> Anyway, have a look and see if this version of things is acceptable
> to all. (Again, the dts update from Kumar isn't shown here).
>
> Thanks to all who provided the feedback on v1.
Looks good to me
Acked-by: Alan Cox
___
Linuxppc-dev mailing list
Looking at this:
> #ifndef atomic_inc_unless_negative
> static inline int atomic_inc_unless_negative(atomic_t *p)
> {
> int v, v1;
> for (v = 0; v >= 0; v = v1) {
> v1 = atomic_cmpxchg(p, v, v + 1);
> if (likely(v1 == v))
> re
There was a bug for fmr initialization, which lead to fmr was always 0x100
in fsl_elbc_chip_init() and caused FCM command timeout before calling
fsl_elbc_chip_init_tail().
Signed-off-by: Shengzhou Liu
---
drivers/mtd/nand/fsl_elbc_nand.c |8 +++-
1 files changed, 3 insertions(+), 5 dele
- fix NAND_CMD_READID command for ONFI detect.
- add NAND_CMD_PARAM command to read the ONFI parameter page.
Signed-off-by: Shengzhou Liu
---
drivers/mtd/nand/fsl_elbc_nand.c | 19 ---
1 files changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/mtd/nand/fsl_elbc_nan
On (Tue) 29 Nov 2011 [09:50:41], Miche Baker-Harvey wrote:
> Good grief! Sorry for the spacing mess-up! Here's a resend with
> reformatting.
>
> Amit,
> We aren't using either QEMU or kvmtool, but we are using KVM. All
So it's a different userspace? Any chance this different userspace is
cau
Some controller provides an incorrect timeout value for transfers,
So it need the quirk to adjust timeout value to 0xE.
E.g. eSDHC of MPC8536, P1010, and P2020.
Signed-off-by: Xie Xiaobo
---
drivers/mmc/host/sdhci-pltfm.c |5 -
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git
On Mon, 2011-12-05 at 09:50 +0100, Joakim Tjernlund wrote:
> Benjamin Herrenschmidt wrote on 2011/11/25
> 06:24:32:
> >
> > On Fri, 2011-11-18 at 09:22 +0100, Joakim Tjernlund wrote:
> >
> > > I forgot to ask, oprofile mentions setting -no-omit-framepointer to get
> > > correct backtrace but I ca
Benjamin Herrenschmidt wrote on 2011/11/25 06:24:32:
>
> On Fri, 2011-11-18 at 09:22 +0100, Joakim Tjernlund wrote:
>
> > I forgot to ask, oprofile mentions setting -no-omit-framepointer to get
> > correct backtrace but I cannot turn on frame pointers for the ppc kernel.
> > Isn't frame pointers n
On Mon, 2011-12-05 at 08:57 +0100, Sven Eckelmann wrote:
> On Monday 05 December 2011 09:41:55 Benjamin Herrenschmidt wrote:
> > On Sun, 2011-12-04 at 22:18 +, Russell King - ARM Linux wrote:
> >
> > .../...
> >
> > > And really, I believe it would be a good cleanup if all the standard
> > >
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