linux-stable.git/arch/arm/include/uapi/asm, branch v5.3

docs: arm: convert docs to ReST and rename to *.rst

2019-07-15T12:20:24+00:00

Converts ARM the text files to ReST, preparing them to be an
architecture book.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab 
Reviewed-by Corentin Labbe  # For sun4i-ss

KVM: arm/arm64: Add save/restore support for firmware workaround state

2019-07-05T12:56:27+00:00

KVM implements the firmware interface for mitigating cache speculation
vulnerabilities. Guests may use this interface to ensure mitigation is
active.
If we want to migrate such a guest to a host with a different support
level for those workarounds, migration might need to fail, to ensure that
critical guests don't loose their protection.

Introduce a way for userland to save and restore the workarounds state.
On restoring we do checks that make sure we don't downgrade our
mitigation level.

Signed-off-by: Andre Przywara 
Reviewed-by: Eric Auger 
Reviewed-by: Steven Price 
Signed-off-by: Marc Zyngier

KVM: export and iif KVM is supported

2019-03-28T16:27:42+00:00

I do not see any consistency about headers_install of 
and .

According to my analysis of Linux 5.1-rc1, there are 3 groups:

 [1] Both  and  are exported

    alpha, arm, hexagon, mips, powerpc, s390, sparc, x86

 [2]  is exported, but  is not

    arc, arm64, c6x, h8300, ia64, m68k, microblaze, nios2, openrisc,
    parisc, sh, unicore32, xtensa

 [3] Neither  nor  is exported

    csky, nds32, riscv

This does not match to the actual KVM support. At least, [2] is
half-baked.

Nor do arch maintainers look like they care about this. For example,
commit 0add53713b1c ("microblaze: Add missing kvm_para.h to Kbuild")
exported  to user-space in order to fix an in-kernel
build error.

We have two ways to make this consistent:

 [A] export both  and  for all
     architectures, irrespective of the KVM support

 [B] Match the header export of  and 
     to the KVM support

My first attempt was [A] because the code looks cleaner, but Paolo
suggested [B].

So, this commit goes with [B].

For most architectures,  was moved to the kernel-space.
I changed include/uapi/linux/Kbuild so that it checks generated
asm/kvm_para.h as well as check-in ones.

After this commit, there will be two groups:

 [1] Both  and  are exported

    arm, arm64, mips, powerpc, s390, x86

 [2] Neither  nor  is exported

    alpha, arc, c6x, csky, h8300, hexagon, ia64, m68k, microblaze,
    nds32, nios2, openrisc, parisc, riscv, sh, sparc, unicore32, xtensa

Signed-off-by: Masahiro Yamada 
Acked-by: Cornelia Huck 
Signed-off-by: Paolo Bonzini

kbuild: force all architectures except um to include mandatory-y

2019-03-17T03:56:32+00:00

Currently, every arch/*/include/uapi/asm/Kbuild explicitly includes
the common Kbuild.asm file. Factor out the duplicated include directives
to scripts/Makefile.asm-generic so that no architecture would opt out
of the mandatory-y mechanism.

um is not forced to include mandatory-y since it is a very exceptional
case which does not support UAPI.

Signed-off-by: Masahiro Yamada

arch: remove redundant UAPI generic-y defines

2019-01-06T01:22:15+00:00

Now that Kbuild automatically creates asm-generic wrappers for missing
mandatory headers, it is redundant to list the same headers in
generic-y and mandatory-y.

Suggested-by: Sam Ravnborg 
Signed-off-by: Masahiro Yamada 
Acked-by: Sam Ravnborg

arch: remove stale comments "UAPI Header export list"

2019-01-06T00:46:51+00:00

These comments are leftovers of commit fcc8487d477a ("uapi: export all
headers under uapi directories").

Prior to that commit, exported headers must be explicitly added to
header-y. Now, all headers under the uapi/ directories are exported.

Signed-off-by: Masahiro Yamada

KVM: arm: Add 32bit get/set events support

2018-07-21T15:02:32+00:00

arm64's new use of KVMs get_events/set_events API calls isn't just
or RAS, it allows an SError that has been made pending by KVM as
part of its device emulation to be migrated.

Wire this up for 32bit too.

We only need to read/write the HCR_VA bit, and check that no esr has
been provided, as we don't yet support VDFSR.

Signed-off-by: James Morse 
Reviewed-by: Dongjiu Geng 
Signed-off-by: Marc Zyngier

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-06-12T18:34:04+00:00

Pull KVM updates from Paolo Bonzini:
 "Small update for KVM:

  ARM:
   - lazy context-switching of FPSIMD registers on arm64
   - "split" regions for vGIC redistributor

  s390:
   - cleanups for nested
   - clock handling
   - crypto
   - storage keys
   - control register bits

  x86:
   - many bugfixes
   - implement more Hyper-V super powers
   - implement lapic_timer_advance_ns even when the LAPIC timer is
     emulated using the processor's VMX preemption timer.
   - two security-related bugfixes at the top of the branch"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (79 commits)
  kvm: fix typo in flag name
  kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access
  KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system
  KVM: x86: introduce linear_{read,write}_system
  kvm: nVMX: Enforce cpl=0 for VMX instructions
  kvm: nVMX: Add support for "VMWRITE to any supported field"
  kvm: nVMX: Restrict VMX capability MSR changes
  KVM: VMX: Optimize tscdeadline timer latency
  KVM: docs: nVMX: Remove known limitations as they do not exist now
  KVM: docs: mmu: KVM support exposing SLAT to guests
  kvm: no need to check return value of debugfs_create functions
  kvm: Make VM ioctl do valloc for some archs
  kvm: Change return type to vm_fault_t
  KVM: docs: mmu: Fix link to NPT presentation from KVM Forum 2008
  kvm: x86: Amend the KVM_GET_SUPPORTED_CPUID API documentation
  KVM: x86: hyperv: declare KVM_CAP_HYPERV_TLBFLUSH capability
  KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE}_EX implementation
  KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE} implementation
  KVM: introduce kvm_make_vcpus_request_mask() API
  KVM: x86: hyperv: do rep check for each hypercall separately
  ...

KVM: arm/arm64: Add KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION

2018-05-25T11:29:27+00:00

This new attribute allows the userspace to set the base address
of a reditributor region, relaxing the constraint of having all
consecutive redistibutor frames contiguous.

Signed-off-by: Eric Auger 
Acked-by: Christoffer Dall 
Signed-off-by: Marc Zyngier

Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

2018-05-20T18:50:27+00:00

Pull ARM fixes from Russell King:

 - Łukasz Stelmach spotted a couple of issues with the decompressor.

 - a couple of kdump fixes found while testing kdump

 - replace some perl with shell code

 - resolve SIGFPE breakage

 - kprobes fixes

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: fix kill( ,SIGFPE) breakage
  ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
  ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
  ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
  ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
  ARM: replace unnecessary perl with sed and the shell $(( )) operator
  ARM: kexec: record parent context registers for non-crash CPUs
  ARM: kexec: fix kdump register saving on panic()
  ARM: 8758/1: decompressor: restore r1 and r2 just before jumping to the kernel
  ARM: 8753/1: decompressor: add a missing parameter to the addruart macro