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The selftest passes on 64-bit LE and 32-bit BE.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Pull second batch of kvm updates from Paolo Bonzini:
"Four changes:
- x86: work around two nasty cases where a benign exception occurs
while another is being delivered. The endless stream of exceptions
causes an infinite loop in the processor, which not even NMIs or
SMIs can interrupt; in the virt case, there is no possibility to
exit to the host either.
- x86: support for Skylake per-guest TSC rate. Long supported by
AMD, the patches mostly move things from there to common
arch/x86/kvm/ code.
- generic: remove local_irq_save/restore from the guest entry and
exit paths when context tracking is enabled. The patches are a few
months old, but we discussed them again at kernel summit. Andy
will pick up from here and, in 4.5, try to remove it from the user
entry/exit paths.
- PPC: Two bug fixes, see merge commit 370289756becc for details"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (21 commits)
KVM: x86: rename update_db_bp_intercept to update_bp_intercept
KVM: svm: unconditionally intercept #DB
KVM: x86: work around infinite loop in microcode when #AC is delivered
context_tracking: avoid irq_save/irq_restore on guest entry and exit
context_tracking: remove duplicate enabled check
KVM: VMX: Dump TSC multiplier in dump_vmcs()
KVM: VMX: Use a scaled host TSC for guest readings of MSR_IA32_TSC
KVM: VMX: Setup TSC scaling ratio when a vcpu is loaded
KVM: VMX: Enable and initialize VMX TSC scaling
KVM: x86: Use the correct vcpu's TSC rate to compute time scale
KVM: x86: Move TSC scaling logic out of call-back read_l1_tsc()
KVM: x86: Move TSC scaling logic out of call-back adjust_tsc_offset()
KVM: x86: Replace call-back compute_tsc_offset() with a common function
KVM: x86: Replace call-back set_tsc_khz() with a common function
KVM: x86: Add a common TSC scaling function
KVM: x86: Add a common TSC scaling ratio field in kvm_vcpu_arch
KVM: x86: Collect information for setting TSC scaling ratio
KVM: x86: declare a few variables as __read_mostly
KVM: x86: merge handle_mmio_page_fault and handle_mmio_page_fault_common
KVM: PPC: Book3S HV: Don't dynamically split core when already split
...
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In static micro-threading modes, the dynamic micro-threading code
is supposed to be disabled, because subcores can't make independent
decisions about what micro-threading mode to put the core in - there is
only one micro-threading mode for the whole core. The code that
implements dynamic micro-threading checks for this, except that the
check was missed in one case. This means that it is possible for a
subcore in static 2-way micro-threading mode to try to put the core
into 4-way micro-threading mode, which usually leads to stuck CPUs,
spinlock lockups, and other stalls in the host.
The problem was in the can_split_piggybacked_subcores() function, which
should always return false if the system is in a static micro-threading
mode. This fixes the problem by making can_split_piggybacked_subcores()
use subcore_config_ok() for its checks, as subcore_config_ok() includes
the necessary check for the static micro-threading modes.
Credit to Gautham Shenoy for working out that the reason for the hangs
and stalls we were seeing was that we were trying to do dynamic 4-way
micro-threading while we were in static 2-way mode.
Fixes: b4deba5c41e9
Cc: vger@stable.kernel.org # v4.3
Signed-off-by: Paul Mackerras <paulus@samba.org>
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When handling a hypervisor data or instruction storage interrupt (HDSI
or HISI), we look up the SLB entry for the address being accessed in
order to translate the effective address to a virtual address which can
be looked up in the guest HPT. This lookup can occasionally fail due
to the guest replacing an SLB entry without invalidating the evicted
SLB entry. In this situation an ERAT (effective to real address
translation cache) entry can persist and be used by the hardware even
though there is no longer a corresponding SLB entry.
Previously we would just deliver a data or instruction storage interrupt
(DSI or ISI) to the guest in this case. However, this is not correct
and has been observed to cause guests to crash, typically with a
data storage protection interrupt on a store to the vmemmap area.
Instead, what we do now is to synthesize a data or instruction segment
interrupt. That should cause the guest to reload an appropriate entry
into the SLB and retry the faulting instruction. If it still faults,
we should find an appropriate SLB entry next time and be able to handle
the fault.
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Pull block IO poll support from Jens Axboe:
"Various groups have been doing experimentation around IO polling for
(really) fast devices. The code has been reviewed and has been
sitting on the side for a few releases, but this is now good enough
for coordinated benchmarking and further experimentation.
Currently O_DIRECT sync read/write are supported. A framework is in
the works that allows scalable stats tracking so we can auto-tune
this. And we'll add libaio support as well soon. Fow now, it's an
opt-in feature for test purposes"
* 'for-4.4/io-poll' of git://git.kernel.dk/linux-block:
direct-io: be sure to assign dio->bio_bdev for both paths
directio: add block polling support
NVMe: add blk polling support
block: add block polling support
blk-mq: return tag/queue combo in the make_request_fn handlers
block: change ->make_request_fn() and users to return a queue cookie
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No functional changes in this patch, but it prepares us for returning
a more useful cookie related to the IO that was queued up.
Signed-off-by: Jens Axboe <axboe@fb.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Keith Busch <keith.busch@intel.com>
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Removal started in commit 5bbeed12bdc3 ("sparc32: drop unused
kmap_atomic_to_page"). Let's do it across the whole tree.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Resource management:
- Add support for Enhanced Allocation devices (Sean O. Stalley)
- Add Enhanced Allocation register entries (Sean O. Stalley)
- Handle IORESOURCE_PCI_FIXED when sizing resources (David Daney)
- Handle IORESOURCE_PCI_FIXED when assigning resources (David Daney)
- Handle Enhanced Allocation capability for SR-IOV devices (David Daney)
- Clear IORESOURCE_UNSET when reverting to firmware-assigned address (Bjorn Helgaas)
- Make Enhanced Allocation bitmasks more obvious (Bjorn Helgaas)
- Expand Enhanced Allocation BAR output (Bjorn Helgaas)
- Add of_pci_check_probe_only to parse "linux,pci-probe-only" (Marc Zyngier)
- Fix lookup of linux,pci-probe-only property (Marc Zyngier)
- Add sparc mem64 resource parsing for root bus (Yinghai Lu)
PCI device hotplug:
- pciehp: Queue power work requests in dedicated function (Guenter Roeck)
Driver binding:
- Add builtin_pci_driver() to avoid registration boilerplate (Paul Gortmaker)
Virtualization:
- Set SR-IOV NumVFs to zero after enumeration (Alexander Duyck)
- Remove redundant validation of SR-IOV offset/stride registers (Alexander Duyck)
- Remove VFs in reverse order if virtfn_add() fails (Alexander Duyck)
- Reorder pcibios_sriov_disable() (Alexander Duyck)
- Wait 1 second between disabling VFs and clearing NumVFs (Alexander Duyck)
- Fix sriov_enable() error path for pcibios_enable_sriov() failures (Alexander Duyck)
- Enable SR-IOV ARI Capable Hierarchy before reading TotalVFs (Ben Shelton)
- Don't try to restore VF BARs (Wei Yang)
MSI:
- Don't alloc pcibios-irq when MSI is enabled (Joerg Roedel)
- Add msi_controller setup_irqs() method for special multivector setup (Lucas Stach)
- Export all remapped MSIs to sysfs attributes (Romain Bezut)
- Disable MSI on SiS 761 (Ondrej Zary)
AER:
- Clear error status registers during enumeration and restore (Taku Izumi)
Generic host bridge driver:
- Fix lookup of linux,pci-probe-only property (Marc Zyngier)
- Allow multiple hosts with different map_bus() methods (David Daney)
- Pass starting bus number to pci_scan_root_bus() (David Daney)
- Fix address window calculation for non-zero starting bus (David Daney)
Altera host bridge driver:
- Add msi.h to ARM Kbuild (Ley Foon Tan)
- Add Altera PCIe host controller driver (Ley Foon Tan)
- Add Altera PCIe MSI driver (Ley Foon Tan)
APM X-Gene host bridge driver:
- Remove msi_controller assignment (Duc Dang)
Broadcom iProc host bridge driver:
- Fix header comment "Corporation" misspelling (Florian Fainelli)
- Fix code comment to match code (Ray Jui)
- Remove unused struct iproc_pcie.irqs[] (Ray Jui)
- Call pci_fixup_irqs() for ARM64 as well as ARM (Ray Jui)
- Fix PCIe reset logic (Ray Jui)
- Improve link detection logic (Ray Jui)
- Update PCIe device tree bindings (Ray Jui)
- Add outbound mapping support (Ray Jui)
Freescale i.MX6 host bridge driver:
- Return real error code from imx6_add_pcie_port() (Fabio Estevam)
- Add PCIE_PHY_RX_ASIC_OUT_VALID definition (Fabio Estevam)
Freescale Layerscape host bridge driver:
- Remove ls_pcie_establish_link() (Minghuan Lian)
- Ignore PCIe controllers in Endpoint mode (Minghuan Lian)
- Factor out SCFG related function (Minghuan Lian)
- Update ls_add_pcie_port() (Minghuan Lian)
- Remove unused fields from struct ls_pcie (Minghuan Lian)
- Add support for LS1043a and LS2080a (Minghuan Lian)
- Add ls_pcie_msi_host_init() (Minghuan Lian)
HiSilicon host bridge driver:
- Add HiSilicon SoC Hip05 PCIe driver (Zhou Wang)
Marvell MVEBU host bridge driver:
- Return zero for reserved or unimplemented config space (Russell King)
- Use exact config access size; don't read/modify/write (Russell King)
- Use of_get_available_child_count() (Russell King)
- Use for_each_available_child_of_node() to walk child nodes (Russell King)
- Report full node name when reporting a DT error (Russell King)
- Use port->name rather than "PCIe%d.%d" (Russell King)
- Move port parsing and resource claiming to separate function (Russell King)
- Fix memory leaks and refcount leaks (Russell King)
- Split port parsing and resource claiming from port setup (Russell King)
- Use gpio_set_value_cansleep() (Russell King)
- Use devm_kcalloc() to allocate an array (Russell King)
- Use gpio_desc to carry around gpio (Russell King)
- Improve clock/reset handling (Russell King)
- Add PCI Express root complex capability block (Russell King)
- Remove code restricting accesses to slot 0 (Russell King)
NVIDIA Tegra host bridge driver:
- Wrap static pgprot_t initializer with __pgprot() (Ard Biesheuvel)
Renesas R-Car host bridge driver:
- Build pci-rcar-gen2.c only on ARM (Geert Uytterhoeven)
- Build pcie-rcar.c only on ARM (Geert Uytterhoeven)
- Make PCI aware of the I/O resources (Phil Edworthy)
- Remove dependency on ARM-specific struct hw_pci (Phil Edworthy)
- Set root bus nr to that provided in DT (Phil Edworthy)
- Fix I/O offset for multiple host bridges (Phil Edworthy)
ST Microelectronics SPEAr13xx host bridge driver:
- Fix dw_pcie_cfg_read/write() usage (Gabriele Paoloni)
Synopsys DesignWare host bridge driver:
- Make "clocks" and "clock-names" optional DT properties (Bhupesh Sharma)
- Use exact access size in dw_pcie_cfg_read() (Gabriele Paoloni)
- Simplify dw_pcie_cfg_read/write() interfaces (Gabriele Paoloni)
- Require config accesses to be naturally aligned (Gabriele Paoloni)
- Make "num-lanes" an optional DT property (Gabriele Paoloni)
- Move calculation of bus addresses to DRA7xx (Gabriele Paoloni)
- Replace ARM pci_sys_data->align_resource with global function pointer (Gabriele Paoloni)
- Factor out MSI msg setup (Lucas Stach)
- Implement multivector MSI IRQ setup (Lucas Stach)
- Make get_msi_addr() return phys_addr_t, not u32 (Lucas Stach)
- Set up high part of MSI target address (Lucas Stach)
- Fix PORT_LOGIC_LINK_WIDTH_MASK (Zhou Wang)
- Revert "PCI: designware: Program ATU with untranslated address" (Zhou Wang)
- Use of_pci_get_host_bridge_resources() to parse DT (Zhou Wang)
- Make driver arch-agnostic (Zhou Wang)
Miscellaneous:
- Make x86 pci_subsys_init() static (Alexander Kuleshov)
- Turn off Request Attributes to avoid Chelsio T5 Completion erratum (Hariprasad Shenai)"
* tag 'pci-v4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (94 commits)
PCI: altera: Add Altera PCIe MSI driver
PCI: hisi: Add HiSilicon SoC Hip05 PCIe driver
PCI: layerscape: Add ls_pcie_msi_host_init()
PCI: layerscape: Add support for LS1043a and LS2080a
PCI: layerscape: Remove unused fields from struct ls_pcie
PCI: layerscape: Update ls_add_pcie_port()
PCI: layerscape: Factor out SCFG related function
PCI: layerscape: Ignore PCIe controllers in Endpoint mode
PCI: layerscape: Remove ls_pcie_establish_link()
PCI: designware: Make "clocks" and "clock-names" optional DT properties
PCI: designware: Make driver arch-agnostic
ARM/PCI: Replace pci_sys_data->align_resource with global function pointer
PCI: designware: Use of_pci_get_host_bridge_resources() to parse DT
Revert "PCI: designware: Program ATU with untranslated address"
PCI: designware: Move calculation of bus addresses to DRA7xx
PCI: designware: Make "num-lanes" an optional DT property
PCI: designware: Require config accesses to be naturally aligned
PCI: designware: Simplify dw_pcie_cfg_read/write() interfaces
PCI: designware: Use exact access size in dw_pcie_cfg_read()
PCI: spear: Fix dw_pcie_cfg_read/write() usage
...
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When find_and_init_phbs() looks for the probe-only property, it seems to
trust the firmware to be correctly written, and assumes that there is a
parameter to the property.
It is conceivable that the firmware could not be that perfect, and it could
expose this property naked (at least one arm64 platform seems to exhibit
this exact behaviour). The setup code the ends up making a decision based
on whatever the property pointer points to, which is likely to be junk.
Instead, switch to the common of_pci.c implementation that doesn't suffer
from this problem and ignore the property if the firmware couldn't make up
its mind.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Kconfig: remove BE-only platforms from LE kernel build from Boqun
Feng
- Refresh ps3_defconfig from Geoff Levand
- Emit GNU & SysV hashes for the vdso from Michael Ellerman
- Define an enum for the bolted SLB indexes from Anshuman Khandual
- Use a local to avoid multiple calls to get_slb_shadow() from Michael
Ellerman
- Add gettimeofday() benchmark from Michael Neuling
- Avoid link stack corruption in __get_datapage() from Michael Neuling
- Add virt_to_pfn and use this instead of opencoding from Aneesh Kumar
K.V
- Add ppc64le_defconfig from Michael Ellerman
- pseries: extract of_helpers module from Andy Shevchenko
- Correct string length in pseries_of_derive_parent() from Nathan
Fontenot
- Free the MSI bitmap if it was slab allocated from Denis Kirjanov
- Shorten irq_chip name for the SIU from Christophe Leroy
- Wait 1s for secondaries to enter OPAL during kexec from Samuel
Mendoza-Jonas
- Fix _ALIGN_* errors due to type difference, from Aneesh Kumar K.V
- powerpc/pseries/hvcserver: don't memset pi_buff if it is null from
Colin Ian King
- Disable hugepd for 64K page size, from Aneesh Kumar K.V
- Differentiate between hugetlb and THP during page walk from Aneesh
Kumar K.V
- Make PCI non-optional for pseries from Michael Ellerman
- Individual System V IPC system calls from Sam bobroff
- Add selftest of unmuxed IPC calls from Michael Ellerman
- discard .exit.data at runtime from Stephen Rothwell
- Delete old orphaned PrPMC 280/2800 DTS and boot file, from Paul
Gortmaker
- Use of_get_next_parent to simplify code from Christophe Jaillet
- Paginate some xmon output from Sam bobroff
- Add some more elements to the xmon PACA dump from Michael Ellerman
- Allow the tm-syscall selftest to build with old headers from Michael
Ellerman
- Run EBB selftests only on POWER8 from Denis Kirjanov
- Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU from Michael
Ellerman
- Avoid reference to potentially freed memory in prom.c from Christophe
Jaillet
- Quieten boot wrapper output with run_cmd from Geoff Levand
- EEH fixes and cleanups from Gavin Shan
- Fix recursive fenced PHB on Broadcom shiner adapter from Gavin Shan
- Use of_get_next_parent() in of_get_ibm_chip_id() from Michael
Ellerman
- Fix section mismatch warning in msi_bitmap_alloc() from Denis
Kirjanov
- Fix ps3-lpm white space from Rudhresh Kumar J
- Fix ps3-vuart null dereference from Colin King
- nvram: Add missing kfree in error path from Christophe Jaillet
- nvram: Fix function name in some errors messages, from Christophe
Jaillet
- drivers/macintosh: adb: fix misleading Kconfig help text from Aaro
Koskinen
- agp/uninorth: fix a memleak in create_gatt_table from Denis Kirjanov
- cxl: Free virtual PHB when removing from Andrew Donnellan
- scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target from
Michael Ellerman
- scripts/kconfig/Makefile: Fix KBUILD_DEFCONFIG check when building
with O= from Michael Ellerman
- Freescale updates from Scott: Highlights include 64-bit book3e
kexec/kdump support, a rework of the qoriq clock driver, device tree
changes including qoriq fman nodes, support for a new 85xx board, and
some fixes.
- MPC5xxx updates from Anatolij: Highlights include a driver for
MPC512x LocalPlus Bus FIFO with its device tree binding
documentation, mpc512x device tree updates and some minor fixes.
* tag 'powerpc-4.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (106 commits)
powerpc/msi: Fix section mismatch warning in msi_bitmap_alloc()
powerpc/prom: Use of_get_next_parent() in of_get_ibm_chip_id()
powerpc/pseries: Correct string length in pseries_of_derive_parent()
powerpc/e6500: hw tablewalk: make sure we invalidate and write to the same tlb entry
powerpc/mpc85xx: Add FSL QorIQ DPAA FMan support to the SoC device tree(s)
powerpc/mpc85xx: Create dts components for the FSL QorIQ DPAA FMan
powerpc/fsl: Add #clock-cells and clockgen label to clockgen nodes
powerpc: handle error case in cpm_muram_alloc()
powerpc: mpic: use IRQCHIP_SKIP_SET_WAKE instead of redundant mpic_irq_set_wake
powerpc/book3e-64: Enable kexec
powerpc/book3e-64/kexec: Set "r4 = 0" when entering spinloop
powerpc/booke: Only use VIRT_PHYS_OFFSET on booke32
powerpc/book3e-64/kexec: Enable SMP release
powerpc/book3e-64/kexec: create an identity TLB mapping
powerpc/book3e-64: Don't limit paca to 256 MiB
powerpc/book3e/kdump: Enable crash_kexec_wait_realmode
powerpc/book3e: support CONFIG_RELOCATABLE
powerpc/booke64: Fix args to copy_and_flush
powerpc/book3e-64: rename interrupt_end_book3e with __end_interrupts
powerpc/e6500: kexec: Handle hardware threads
...
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MPC5xxx updates from Anatolij:
"Highlights include a driver for MPC512x LocalPlus Bus FIFO with its
device tree binding documentation, mpc512x device tree updates and some
minor fixes."
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This patch moves data allocated using kzalloc to managed data allocated
using devm_kzalloc and cleans now unnecessary kfree in probe function.
The following Coccinelle semantic patch was used for making the change:
@platform@
identifier p, probefn, removefn;
@@
struct platform_driver p = {
.probe = probefn,
.remove = removefn,
};
@prb@
identifier platform.probefn, pdev;
expression e, e1, e2;
@@
probefn(struct platform_device *pdev, ...) {
<+...
- e = kzalloc(e1, e2)
+ e = devm_kzalloc(&pdev->dev, e1, e2)
...
?-kfree(e);
...+>
}
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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These were introduced in commit 25ae3a0739c6 ("[POWERPC] mpc512x: Add
MPC512x PSC support to MPC52xx psc driver") and never used. Moreover
according to the datasheet[1] MEMERROR is bit 25 (0x40) and ORERR is
bit 27 (0x10).
[1] MPC5125RM Rev. 2; 11/2009
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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Add a device tree binding for Freescale MPC512x LocalPlus Bus FIFO and
introduce the document describing that binding.
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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This driver for Freescale MPC512x LocalPlus Bus FIFO (called SCLPC
in the Reference Manual) allows Direct Memory Access transfers
between RAM and peripheral devices on LocalPlus Bus.
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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This platform driver has a OF device ID table but the OF module
alias information is not created so module autoloading won't work.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next
Freescale updates from Scott:
"Highlights include 64-bit book3e kexec/kdump support, a rework of the
qoriq clock driver, device tree changes including qoriq fman nodes,
support for a new 85xx board, and some fixes.
Note that there is a trivial merge conflict with the clock tree's next
branch, in the clock Makefile."
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tlb entry
In order to workaround Erratum A-008139, we have to invalidate the
tlb entry with tlbilx before overwriting. Due to the performance
consideration, we don't add any memory barrier when acquire/release
the tcd lock. This means the two load instructions for esel_next do
have the possibility to return different value. This is definitely
not acceptable due to the Erratum A-008139. We have two options to
fix this issue:
a) Add memory barrier when acquire/release tcd lock to order the
load/store to esel_next.
b) Just make sure to invalidate and write to the same tlb entry and
tolerate the race that we may get the wrong value and overwrite
the tlb entry just updated by the other thread.
We observe better performance using option b. So reserve an additional
register to save the value of the esel_next.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Based on prior work by Andy Fleming <afleming@freescale.com>
Signed-off-by: Shruti Kanetkar <Shruti@freescale.com>
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Based on prior work by Andy Fleming <afleming@freescale.com>
Signed-off-by: Shruti Kanetkar <Shruti@freescale.com>
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Igal Liberman <Igal.Liberman@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This allows new-style clock references to be used, which is needed for
fman. The old clock nodes will be removed and all clock references
converted to new-style once the qoriq-cpufreq driver is updated to stop
depending on the old-style references in cpu nodes.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This is a major overhaul of the clk-qoriq driver, which I'm merging
via PPC with Stephen Boyd's ack in order to apply subsequent PPC patches
that depend on it.
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Freescale's Layerscape ARM chips use the same structure.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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rh_alloc() returns (unsigned long)-ERRxx on error, which may
result in overwriting memory outside the MURAM AREA.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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mpic_irq_set_wake return -ENXIO for non FSL MPIC and sets IRQF_NO_SUSPEND
flag for FSL ones. enable_irq_wake already returns -ENXIO if irq_set_wak
is not implemented. Also there's no need to set the IRQF_NO_SUSPEND flag
as it doesn't guarantee wakeup for that interrupt.
This patch removes the redundant mpic_irq_set_wake and sets the
IRQCHIP_SKIP_SET_WAKE for only FSL MPIC.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Hongtao Jia <hongtao.jia@freescale.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Allow KEXEC for book3e, and bypass or convert non-book3e stuff
in kexec code.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood@freescale.com: move code to minimize diff, and cleanup]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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book3e_secondary_core_init will only create a TLB entry if r4 = 0,
so do so.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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The way VIRT_PHYS_OFFSET is not correct on book3e-64, because
it does not account for CONFIG_RELOCATABLE other than via the
32-bit-only virt_phys_offset.
book3e-64 can (and if the comment about a GCC miscompilation is still
relevant, should) use the normal ppc64 __va/__pa.
At this point, only booke-32 will use VIRT_PHYS_OFFSET, so given the
issues with its calculation, restrict its definition to booke-32.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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The SMP release mechanism for FSL book3e is different from when booting
with normal hardware. In theory we could simulate the normal spin
table mechanism, but not at the addresses U-Boot put in the device tree
-- so there'd need to be even more communication between the kernel and
kexec to set that up. Instead, kexec-tools will set a boolean property
linux,booted-from-kexec in the /chosen node.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: devicetree@vger.kernel.org
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book3e has no real MMU mode so we have to create an identity TLB
mapping to make sure we can access the real physical address.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: cleanup, and split off some changes]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This limit only makes sense on book3s, and on book3e it can cause
problems with kdump if we don't have any memory under 256 MiB.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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While book3e doesn't have "real mode", we still want to wait for
all the non-crash cpus to complete their shutdown.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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book3e is different with book3s since 3s includes the exception
vectors code in head_64.S as it relies on absolute addressing
which is only possible within this compilation unit. So we have
to get that label address with got.
And when boot a relocated kernel, we should reset ipvr properly again
after .relocate.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: cleanup and ifdef removal]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Convert r4/r5, not r6, to a virtual address when calling
copy_and_flush. Otherwise, r3 is already virtual, and copy_to_flush
tries to access r3+r6, PAGE_OFFSET gets added twice.
This isn't normally seen because on book3e we normally enter with
the kernel at zero and thus skip copy_to_flush -- but it will be
needed for kexec support.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: split patch and rewrote changelog]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Rename 'interrupt_end_book3e' to '__end_interrupts' so that the symbol
can be used by both book3s and book3e.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: edit changelog]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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The new kernel will be expecting secondary threads to be disabled,
not spinning.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Unlike 32-bit 85xx kexec, we don't do a core reset.
Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: edit changelog, and cleanup]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This is required for kdump to work when loaded at at an address that
does not fall within the first TLB entry -- which can easily happen
because while the lower limit is enforced via reserved memory, which
doesn't affect how much is mapped, the upper limit is enforced via a
different mechanism that does. Thus, more TLB entries are needed than
would normally be used, as the total memory to be mapped might not be a
power of two.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Use an AS=1 trampoline TLB entry to allow all normal TLB1 entries to
be loaded at once. This avoids the need to keep the translation that
code is executing from in the same TLB entry in the final TLB
configuration as during early boot, which in turn is helpful for
relocatable kernels (e.g. kdump) where the kernel is not running from
what would be the first TLB entry.
On e6500, we limit map_mem_in_cams() to the primary hwthread of a
core (the boot cpu is always considered primary, as a kdump kernel
can be entered on any cpu). Each TLB only needs to be set up once,
and when we do, we don't want another thread to be running when we
create a temporary trampoline TLB1 entry.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Otherwise, because the top end of the crash kernel is treated as the
absolute top of memory rather than the beginning of a reserved region,
in-flight DMA from the previous kernel that targets areas above the
crash kernel can trigger a storm of PCI errors. We only do this for
kdump, not normal kexec, in case kexec is being used to upgrade to a
kernel that wants a different inbound memory map.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Mingkai Hu <Mingkai.hu@freescale.com>
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85xx currently uses the generic timebase sync mechanism when
CONFIG_KEXEC is enabled, because 32-bit 85xx kexec support does a hard
reset of each core. 64-bit 85xx kexec does not do this, so we neither
need nor want this (nor is the generic timebase sync code built on
ppc64).
FWIW, I don't like the fact that the hard reset is done on 32-bit
kexec, and I especially don't like the timebase sync being triggered
only on the presence of CONFIG_KEXEC rather than actually booting in
that environment, but that's beyond the scope of this patch...
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Problems have been observed in coreint (EPR) mode if interrupts are
left pending (due to the lack of device quiescence with kdump) after
having tried to deliver to a CPU but unable to deliver due to MSR[EE]
-- interrupts no longer get reliably delivered in the new kernel. I
tried various ways of fixing it up inside the crash kernel itself, and
none worked (including resetting the entire mpic). Masking all
interrupts and issuing EOIs in the crashing kernel did help a lot of
the time, but the behavior was not consistent.
Thus, stick to standard IACK mode when kdump is a possibility.
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This allows SMP kernels to work as kdump crash kernels. While crash
kernels don't really need to be SMP, this prevents things from breaking
if a user does it anyway (which is not something you want to only find
out once the main kernel has crashed in the field, especially if
whether it works or not depends on which cpu crashed).
Signed-off-by: Scott Wood <scottwood@freescale.com>
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To make provision for more than one L2 caches in the system, change the
name from L2 to L2_1; same as in T4 platforms.
* Also remove the L2 entry from common file
"arch/powerpc/boot/dts/fsl/b4si-post.dtsi"
Keep them only in separate files for b4860 and b4420.
Signed-off-by: Shaveta Leekha <shaveta@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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It makes no sense that some Freescale device tree files are in fsl
directory while some others not. This patch move Freescale device tree
files into fsl folder. To do that the following two steps are made:
- Move Freescale device tree files into fsl folder.
- Update the include path in these files from "fsl/*.dtsi" to "*.dtsi".
Please add "fsl/" prefix when you make dtb using Makefile.
Signed-off-by: Jia Hongtao <hongtao.jia@freescale.com>
[scottwood: fixed cuImage rule]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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In case of B4860 LIODN register for sRIO is not in GUTs block but in
the sRIO register space.
Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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This board uses a P5020 chip, and boots just fine using
the corenet_generic code. The device tree is very similar to the
P5020DS, except that there is no Flash memory. The environment is,
instead, stored on an MMC card on the motherboard.
Signed-off-by: Andy Fleming <afleming@gmail.com>
[scottwood: fixed trailing whitespace]
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Signed-off-by: Scott Wood <scottwood@freescale.com>
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hongtao Jia <hongtao.jia@freescale.com>
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DS26522 is used for tdm, configured by SPI bus.
Add nodes under spi node to t104xd4rdb.dtsi.
Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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While the handling of fsl,pq3-gpio and fsl,mpc8572-gpio is done in the
same driver and the two hardly differ, the latter controller needs a
workaround for an erratum in the gpio_get callback. To make this
difference more explicit remove fsl,pq3-gpio from the list of
compatibles for mpc8572 machines.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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