18893 Commits

Author SHA1 Message Date
9c1b3ef8e2 arm64: tegra: jetson-nano: Remove extra PLL power supplies for PCIe and XUSB
The XUSB pad controller handles the various PLL power supplies, so
remove any references to them from the PCIe and XUSB controller device
tree nodes.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
54215999f3 arm64: tegra: smaug: Remove extra PLL power supplies for XUSB
The XUSB pad controller handles the various PLL power supplies, so
remove any references to them from the XUSB controller device tree
node.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
31bc882c03 arm64: tegra: jetson-tx1: Remove extra PLL power supplies for PCIe and XUSB
The XUSB pad controller handles the various PLL power supplies, so
remove any references to them from the PCIe and XUSB controller device
tree nodes.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
635fb5d4cb arm64: tegra: Rename GPIO hog nodes to match schema
GPIO hog nodes must have a "hog-" prefix or "-hog" suffix according to
the DT schema. Rename all such nodes to allow validation to pass.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
1dcf00ae82 arm64: tegra: Remove unsupported regulator properties
Remove the unsupported "regulator-disable-ramp-delay" properties which
ended up in various DTS files for some reason.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
99d9bde5b4 arm64: tegra: Rename TCU node to "serial"
The TCU is basically a serial port (albeit a fancy one), so it should be
named "serial".

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
c453cc9e9e arm64: tegra: Remove undocumented Tegra194 PCIe "core_m" clock
The "core_m" clock is not documented in the Tegra194 PCIe device tree
bindings, so remove it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
1ff7505907 arm64: tegra: Drop unused properties for Tegra194 PCIe
The num-viewport property is never used and can be dropped, whereas the
"iommus" property is not needed since we use "iommu-map-mask" and
"iommu-map" already.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
cd6157c197 arm64: tegra: Fix Tegra194 HSP compatible string
The HSP instances on Tegra194 are not fully compatible with the version
found on Tegra186, so drop the fallback compatible string from the list.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
2fcb87970e arm64: tegra: Drop unsupported nvidia,lpdr property
The Tegra194 pinmux DT bindings do not define the nvidia,lpdr property,
so drop them from the device trees that have listed them.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
56797e6259 arm64: tegra: Use JEDEC vendor prefix for SPI NOR flash chips
The standard "jedec," vendor prefix should be used for SPI NOR flash
chips. This allows the right DT schema to be picked for validation.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
e7445ab7dc arm64: tegra: Drop unit-address for audio card graph endpoints
Audio graph endpoints don't have a "reg" property, so they shouldn't
have a unit-address either.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
2b14cbd643 arm64: tegra: Adjust length of CCPLEX cluster MMIO region
The Tegra186 CCPLEX cluster register region is 4 MiB is length, not 4
MiB - 1. This was likely presumed to be the "limit" rather than length.
Fix it up.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
548c9c5aaf arm64: tegra: Fix Tegra186 compatible string list
The I2C controller found on Tegra186 is not fully compatible with the
Tegra210 version, so drop the fallback compatible string from the list.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:02 +01:00
4b5ae31fb7 arm64: tegra: Rename power-monitor input nodes
Child nodes of the TI INA3221 power monitor device tree node should be
called input@* according to the DT schema.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
fe57ff5365 arm64: tegra: Rename thermal zones nodes
The DT schema requires that nodes representing thermal zones include a
"-thermal" suffix in their name.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
fce5d07316 arm64: tegra: Sort Tegra132 XUSB clocks correctly
Make the order of the clocks and clock-names properties match the order
in the device tree bindings. This isn't strictly necessary from a point
of view of the operating system because matching will be done based on
the clock-names, but it makes it easier to validate the device trees
against the DT schema.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
9f27a6c421 arm64: tegra: Drop unused AHCI clocks on Tegra132
The CML1 and PLL_E clocks are never explicitly used by the AHCI
controller found on Tegra132, so drop them from the corresponding device
tree node.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
92564257d7 arm64: tegra: Fix Tegra132 I2C compatible string list
The I2C controller found on Tegra124 is not fully compatible with the
Tegra114 version, so drop the fallback compatible string from the list.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
ed9e9a6eb1 arm64: tegra: Add OPP tables on Tegra132
Add peripheral OPP tables on Tegra132 and wire them up to ACTMON and the
EMC. While at it, add the missing "#interconnect-cells" properties to
the memory controller and external memory controller nodes. Also set the
"#reset-cells" property for the memory controller because it exports the
hotflush reset controls.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
bb43b219c8 arm64: tegra: Fix compatible string for Tegra132 timer
The TKE (time-keeping engine) found on Tegra132 is not backwards
compatible with the version found on Tegra20, so update the compatible
string list accordingly.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
64b4078276 arm64: tegra: Remove unsupported properties on Norrin
The Tegra PMC device tree bindings don't support the "#wake-cells" and
"nvidia,reset-gpio" properties, so remove them.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
2c6fd24dcb arm64: tegra: Fix unit-addresses on Norrin
The AS3722 pinmux device tree node doesn't have a "reg" property and
therefore must not have a unit-address, so drop it.

While at it, add missing unit-addresses for the charger and smart
battery IC's on the ChromeOS embedded controller's I2C tunnel bus.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
bd1fefcbdd arm64: tegra: Add native timer support on Tegra186
The native timers IP block found on NVIDIA Tegra SoCs implements a
watchdog timer that can be used to recover from system hangs. Add the
device tree node on Tegra186.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
097e01c610 arm64: tegra: Rename top-level regulators
Regulators defined at the top level in device tree are no longer part of
a simple bus and therefore don't have a reg property. Nodes without a
reg property shouldn't have a unit-address either, so drop the unit
address from the node names. To ensure nodes aren't duplicated (in which
case they would end up merged in the final DTB), append the name of the
regulator to the node name.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
4cc3e3e164 arm64: tegra: Rename top-level clocks
Clocks defined at the top level in device tree are no longer part of a
simple bus and therefore don't have a reg property. Nodes without a reg
property shouldn't have a unit-address either, so drop the unit address
from the node names. To ensure nodes aren't duplicated (in which case
they would end up merged in the final DTB), append the name of the clock
to the node name.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
e762232f94 arm64: tegra: Add ISO SMMU controller for Tegra194
The display controllers are attached to a separate ARM SMMU instance
that is dedicated to servicing isochronous memory clients. Add this ISO
instance of the ARM SMMU to device tree.

Please note that the display controllers are not hooked up to this SMMU
yet, because we are still missing a means to transition framebuffers
used by the bootloader to the kernel.

This based upon an initial patch by Thierry Reding <treding@nvidia.com>.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
f7eb278572 arm64: tegra: Add NVENC and NVJPG nodes for Tegra186 and Tegra194
Populate the device-tree nodes for NVENC and NVJPG Host1x engines on
Tegra186 and Tegra194.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
ff21087e61 arm64: tegra: Add support to enumerate SD in UHS mode
Add support to enumerate SD in UHS mode on Tegra194. Add required
device-tree properties in SDMMC1 and SDMMC3 instances to enable dynamic
pad voltage switching and enumerate SD card in UHS-I modes.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
533337d5c8 arm64: tegra: Add NVIDIA Jetson AGX Orin Developer Kit support
The Jetson AGX Orin Developer Kit is a continuation of the Jetson
Developer Kit line using the new NVIDIA Tegra234 (Orin) SoC.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
a12cf5c339 arm64: tegra: Describe Tegra234 CPU hierarchy
The NVIDIA Tegra234 SoC has 3 clusters of 4 Cortex-A78AE CPU cores each,
for a total of 12 CPUs. Each CPU has 64 KiB instruction and data caches
with each cluster having an additional 256 KiB unified L2 cache and a 2
MiB L3 cache.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
f0e1266818 arm64: tegra: Add main and AON GPIO controllers on Tegra234
These two controllers expose general purpose I/O pins that can be used
to control or monitor a variety of signals.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
06ad2ec4e5 arm64: tegra: Add Tegra234 TCU device
Add a device for TCU (Tegra Combined UART) used for serial console.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:01 +01:00
e086d82d4f arm64: tegra: Fill in properties for Tegra234 eMMC
Add missing properties to the eMMC controller, as required to use it on
actual hardware.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:00 +01:00
98094be152 arm64: tegra: Update Tegra234 BPMP channel addresses
On final Tegra234 systems, shared memory for communication with BPMP is
located at offset 0x70000 in SYSRAM.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:00 +01:00
e537adde13 arm64: tegra: Add clock for Tegra234 RTC
The RTC device requires a clock. Add it.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:00 +01:00
7fa307524a arm64: tegra: Fixup SYSRAM references
The json-schema bindings for SRAM expect the nodes to be called "sram"
rather than "sysram" or "shmem". Furthermore, place the brackets around
the SYSRAM references such that a two-element array is created rather
than a two-element array nested in a single-element array. This is not
relevant for device tree itself, but allows the nodes to be properly
validated against json-schema bindings.

Signed-off-by: Thierry Reding <treding@nvidia.com>
2021-12-16 16:51:00 +01:00
4d6fe79fde New x86 features:
* Guest API and guest kernel support for SEV live migration
 
 * SEV and SEV-ES intra-host migration
 
 Bugfixes and cleanups for x86:
 
 * Fix misuse of gfn-to-pfn cache when recording guest steal time / preempted status
 
 * Fix selftests on APICv machines
 
 * Fix sparse warnings
 
 * Fix detection of KVM features in CPUID
 
 * Cleanups for bogus writes to MSR_KVM_PV_EOI_EN
 
 * Fixes and cleanups for MSR bitmap handling
 
 * Cleanups for INVPCID
 
 * Make x86 KVM_SOFT_MAX_VCPUS consistent with other architectures
 
 Bugfixes for ARM:
 
 * Fix finalization of host stage2 mappings
 
 * Tighten the return value of kvm_vcpu_preferred_target()
 
 * Make sure the extraction of ESR_ELx.EC is limited to architected bits
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm updates from Paolo Bonzini:
 "New x86 features:

   - Guest API and guest kernel support for SEV live migration

   - SEV and SEV-ES intra-host migration

  Bugfixes and cleanups for x86:

   - Fix misuse of gfn-to-pfn cache when recording guest steal time /
     preempted status

   - Fix selftests on APICv machines

   - Fix sparse warnings

   - Fix detection of KVM features in CPUID

   - Cleanups for bogus writes to MSR_KVM_PV_EOI_EN

   - Fixes and cleanups for MSR bitmap handling

   - Cleanups for INVPCID

   - Make x86 KVM_SOFT_MAX_VCPUS consistent with other architectures

  Bugfixes for ARM:

   - Fix finalization of host stage2 mappings

   - Tighten the return value of kvm_vcpu_preferred_target()

   - Make sure the extraction of ESR_ELx.EC is limited to architected
     bits"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (34 commits)
  KVM: SEV: unify cgroup cleanup code for svm_vm_migrate_from
  KVM: x86: move guest_pv_has out of user_access section
  KVM: x86: Drop arbitrary KVM_SOFT_MAX_VCPUS
  KVM: Move INVPCID type check from vmx and svm to the common kvm_handle_invpcid()
  KVM: VMX: Add a helper function to retrieve the GPR index for INVPCID, INVVPID, and INVEPT
  KVM: nVMX: Clean up x2APIC MSR handling for L2
  KVM: VMX: Macrofy the MSR bitmap getters and setters
  KVM: nVMX: Handle dynamic MSR intercept toggling
  KVM: nVMX: Query current VMCS when determining if MSR bitmaps are in use
  KVM: x86: Don't update vcpu->arch.pv_eoi.msr_val when a bogus value was written to MSR_KVM_PV_EOI_EN
  KVM: x86: Rename kvm_lapic_enable_pv_eoi()
  KVM: x86: Make sure KVM_CPUID_FEATURES really are KVM_CPUID_FEATURES
  KVM: x86: Add helper to consolidate core logic of SET_CPUID{2} flows
  kvm: mmu: Use fast PF path for access tracking of huge pages when possible
  KVM: x86/mmu: Properly dereference rcu-protected TDP MMU sptep iterator
  KVM: x86: inhibit APICv when KVM_GUESTDBG_BLOCKIRQ active
  kvm: x86: Convert return type of *is_valid_rdpmc_ecx() to bool
  KVM: x86: Fix recording of guest steal time / preempted status
  selftest: KVM: Add intra host migration tests
  selftest: KVM: Add open sev dev helper
  ...
2021-11-13 10:01:10 -08:00
84886c262e KVM/arm64 fixes for 5.16, take #1
- Fix the host S2 finalization by solely iterating over the memblocks
   instead of the whole IPA space
 
 - Tighten the return value of kvm_vcpu_preferred_target() now that
   32bit support is long gone
 
 - Make sure the extraction of ESR_ELx.EC is limited to the architected
   bits
 
 - Comment fixups
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Merge tag 'kvmarm-fixes-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master

KVM/arm64 fixes for 5.16, take #1

- Fix the host S2 finalization by solely iterating over the memblocks
  instead of the whole IPA space

- Tighten the return value of kvm_vcpu_preferred_target() now that
  32bit support is long gone

- Make sure the extraction of ESR_ELx.EC is limited to the architected
  bits

- Comment fixups
2021-11-12 16:01:55 -05:00
dbf4989618 Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton:
 "The post-linux-next material.

  7 patches.

  Subsystems affected by this patch series (all mm): debug,
  slab-generic, migration, memcg, and kasan"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kasan: add kasan mode messages when kasan init
  mm: unexport {,un}lock_page_memcg
  mm: unexport folio_memcg_{,un}lock
  mm/migrate.c: remove MIGRATE_PFN_LOCKED
  mm: migrate: simplify the file-backed pages validation when migrating its mapping
  mm: allow only SLUB on PREEMPT_RT
  mm/page_owner.c: modify the type of argument "order" in some functions
2021-11-11 14:31:47 -08:00
c55a04176c Char/Misc fix for 5.16-rc1
Here is a single fix for 5.16-rc1 to resolve a build problem that came
 in through the coresight tree (and as such came in through the char/misc
 tree merge in the 5.16-rc1 merge window).
 
 It resolves a build problem with 'allmodconfig' on arm64 and is acked by
 the proper subsystem maintainers.  It has been in linux-next all week
 with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg KH:
 "Here is a single fix for 5.16-rc1 to resolve a build problem that came
  in through the coresight tree (and as such came in through the
  char/misc tree merge in the 5.16-rc1 merge window).

  It resolves a build problem with 'allmodconfig' on arm64 and is acked
  by the proper subsystem maintainers. It has been in linux-next all
  week with no reported problems"

* tag 'char-misc-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  arm64: cpufeature: Export this_cpu_has_cap helper
2021-11-11 09:44:29 -08:00
b873e98681 kasan: add kasan mode messages when kasan init
There are multiple kasan modes.  It makes sense that we add some
messages to know which kasan mode is active when booting up [1].

Link: https://bugzilla.kernel.org/show_bug.cgi?id=212195 [1]
Link: https://lkml.kernel.org/r/20211020094850.4113-1-Kuan-Ying.Lee@mediatek.com
Signed-off-by: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
Reviewed-by: Marco Elver <elver@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Chinwen Chang <chinwen.chang@mediatek.com>
Cc: Yee Lee <yee.lee@mediatek.com>
Cc: Nicholas Tang <nicholas.tang@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-11 09:34:35 -08:00
89fa0be0a0 arm64 fixes for -rc1
- Fix double-evaluation of 'pte' macro argument when using 52-bit PAs
 
 - Fix signedness of some MTE prctl PR_* constants
 
 - Fix kmemleak memory usage by skipping early pgtable allocations
 
 - Fix printing of CPU feature register strings
 
 - Remove redundant -nostdlib linker flag for vDSO binaries
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - Fix double-evaluation of 'pte' macro argument when using 52-bit PAs

 - Fix signedness of some MTE prctl PR_* constants

 - Fix kmemleak memory usage by skipping early pgtable allocations

 - Fix printing of CPU feature register strings

 - Remove redundant -nostdlib linker flag for vDSO binaries

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: pgtable: make __pte_to_phys/__phys_to_pte_val inline functions
  arm64: Track no early_pgtable_alloc() for kmemleak
  arm64: mte: change PR_MTE_TCF_NONE back into an unsigned long
  arm64: vdso: remove -nostdlib compiler flag
  arm64: arm64_ftr_reg->name may not be a human-readable string
2021-11-10 11:29:30 -08:00
e8f023caee asm-generic: asm/syscall.h cleanup
This is a single cleanup from Peter Collingbourne, removing
 some dead code.
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Merge tag 'asm-generic-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanup from Arnd Bergmann:
 "This is a single cleanup from Peter Collingbourne, removing some dead
  code"

* tag 'asm-generic-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  arch: remove unused function syscall_set_arguments()
2021-11-10 11:22:03 -08:00
bf98ecbbae xen: branch for v5.16-rc1
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Merge tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - a series to speed up the boot of Xen PV guests

 - some cleanups in Xen related code

 - replacement of license texts with the appropriate SPDX headers and
   fixing of wrong SPDX headers in Xen header files

 - a small series making paravirtualized interrupt masking much simpler
   and at the same time removing complaints of objtool

 - a fix for Xen ballooning hogging workqueues for too long

 - enablement of the Xen pciback driver for Arm

 - some further small fixes/enhancements

* tag 'for-linus-5.16b-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
  xen/balloon: fix unused-variable warning
  xen/balloon: rename alloc/free_xenballooned_pages
  xen/balloon: add late_initcall_sync() for initial ballooning done
  x86/xen: remove 32-bit awareness from startup_xen
  xen: remove highmem remnants
  xen: allow pv-only hypercalls only with CONFIG_XEN_PV
  x86/xen: remove 32-bit pv leftovers
  xen-pciback: allow compiling on other archs than x86
  x86/xen: switch initial pvops IRQ functions to dummy ones
  x86/xen: remove xen_have_vcpu_info_placement flag
  x86/pvh: add prototype for xen_pvh_init()
  xen: Fix implicit type conversion
  xen: fix wrong SPDX headers of Xen related headers
  xen/pvcalls-back: Remove redundant 'flush_workqueue()' calls
  x86/xen: Remove redundant irq_enter/exit() invocations
  xen-pciback: Fix return in pm_ctrl_init()
  xen/x86: restrict PV Dom0 identity mapping
  xen/x86: there's no highmem anymore in PV mode
  xen/x86: adjust handling of the L3 user vsyscall special page table
  xen/x86: adjust xen_set_fixmap()
  ...
2021-11-10 11:14:21 -08:00
50a8d33159 KVM: arm64: Fix host stage-2 finalization
We currently walk the hypervisor stage-1 page-table towards the end of
hyp init in nVHE protected mode and adjust the host page ownership
attributes in its stage-2 in order to get a consistent state from both
point of views. The walk is done on the entire hyp VA space, and expects
to only ever find page-level mappings. While this expectation is
reasonable in the half of hyp VA space that maps memory with a fixed
offset (see the loop in pkvm_create_mappings_locked()), it can be
incorrect in the other half where nothing prevents the usage of block
mappings. For instance, on systems where memory is physically aligned at
an address that happens to maps to a PMD aligned VA in the hyp_vmemmap,
kvm_pgtable_hyp_map() will install block mappings when backing the
hyp_vmemmap, which will later cause finalize_host_mappings() to fail.
Furthermore, it should be noted that all pages backing the hyp_vmemmap
are also mapped in the 'fixed offset range' of the hypervisor, which
implies that finalize_host_mappings() will walk both aliases and update
the host stage-2 attributes twice. The order in which this happens is
unpredictable, though, since the hyp VA layout is highly dependent on
the position of the idmap page, hence resulting in a fragile mess at
best.

In order to fix all of this, let's restrict the finalization walk to
only cover memory regions in the 'fixed-offset range' of the hyp VA
space and nothing else. This not only fixes a correctness issue, but
will also result in a slighlty faster hyp initialization overall.

Fixes: 2c50166c62ba ("KVM: arm64: Mark host bss and rodata section as shared")
Signed-off-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211108154636.393384-1-qperret@google.com
2021-11-08 18:07:48 +00:00
1e9ed9360f Kbuild updates for v5.16
- Remove the global -isystem compiler flag, which was made possible by
    the introduction of <linux/stdarg.h>
 
  - Improve the Kconfig help to print the location in the top menu level
 
  - Fix "FORCE prerequisite is missing" build warning for sparc
 
  - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which generate
    a zstd-compressed tarball
 
  - Prevent gen_init_cpio tool from generating a corrupted cpio when
    KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later
 
  - Misc cleanups
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Merge tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove the global -isystem compiler flag, which was made possible by
   the introduction of <linux/stdarg.h>

 - Improve the Kconfig help to print the location in the top menu level

 - Fix "FORCE prerequisite is missing" build warning for sparc

 - Add new build targets, tarzst-pkg and perf-tarzst-src-pkg, which
   generate a zstd-compressed tarball

 - Prevent gen_init_cpio tool from generating a corrupted cpio when
   KBUILD_BUILD_TIMESTAMP is set to 2106-02-07 or later

 - Misc cleanups

* tag 'kbuild-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (28 commits)
  kbuild: use more subdir- for visiting subdirectories while cleaning
  sh: remove meaningless archclean line
  initramfs: Check timestamp to prevent broken cpio archive
  kbuild: split DEBUG_CFLAGS out to scripts/Makefile.debug
  gen_init_cpio: add static const qualifiers
  kbuild: Add make tarzst-pkg build option
  scripts: update the comments of kallsyms support
  sparc: Add missing "FORCE" target when using if_changed
  kconfig: refactor conf_touch_dep()
  kconfig: refactor conf_write_dep()
  kconfig: refactor conf_write_autoconf()
  kconfig: add conf_get_autoheader_name()
  kconfig: move sym_escape_string_value() to confdata.c
  kconfig: refactor listnewconfig code
  kconfig: refactor conf_write_symbol()
  kconfig: refactor conf_write_heading()
  kconfig: remove 'const' from the return type of sym_escape_string_value()
  kconfig: rename a variable in the lexer to a clearer name
  kconfig: narrow the scope of variables in the lexer
  kconfig: Create links to main menu items in search
  ...
2021-11-08 09:15:45 -08:00
08e873cb70 KVM: arm64: Change the return type of kvm_vcpu_preferred_target()
kvm_vcpu_preferred_target() always return 0 because kvm_target_cpu()
never returns a negative error code.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211105011500.16280-1-yuehaibing@huawei.com
2021-11-08 10:48:47 +00:00
deacd669e1 KVM: arm64: nvhe: Fix a non-kernel-doc comment
Do not use kernel-doc "/**" notation when the comment is not in
kernel-doc format.

Fixes this docs build warning:

arch/arm64/kvm/hyp/nvhe/sys_regs.c:478: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
    * Handler for protected VM restricted exceptions.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Fuad Tabba <tabba@google.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: kvmarm@lists.cs.columbia.edu
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211106032529.15057-1-rdunlap@infradead.org
2021-11-08 10:43:35 +00:00
8bb084119f KVM: arm64: Extract ESR_ELx.EC only
Since ARMv8.0 the upper 32 bits of ESR_ELx have been RES0, and recently
some of the upper bits gained a meaning and can be non-zero. For
example, when FEAT_LS64 is implemented, ESR_ELx[36:32] contain ISS2,
which for an ST64BV or ST64BV0 can be non-zero. This can be seen in ARM
DDI 0487G.b, page D13-3145, section D13.2.37.

Generally, we must not rely on RES0 bit remaining zero in future, and
when extracting ESR_ELx.EC we must mask out all other bits.

All C code uses the ESR_ELx_EC() macro, which masks out the irrelevant
bits, and therefore no alterations are required to C code to avoid
consuming irrelevant bits.

In a couple of places the KVM assembly extracts ESR_ELx.EC using LSR on
an X register, and so could in theory consume previously RES0 bits. In
both cases this is for comparison with EC values ESR_ELx_EC_HVC32 and
ESR_ELx_EC_HVC64, for which the upper bits of ESR_ELx must currently be
zero, but this could change in future.

This patch adjusts the KVM vectors to use UBFX rather than LSR to
extract ESR_ELx.EC, ensuring these are robust to future additions to
ESR_ELx.

Cc: stable@vger.kernel.org
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexandru Elisei <alexandru.elisei@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211103110545.4613-1-mark.rutland@arm.com
2021-11-08 10:41:12 +00:00