Merge branch 'fixes-v5.7' into fixes

Merge drm/drm-next into drm-misc-next

Backmerging required to pull topic/phy-compliance.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-intel-next-queued

Backmerging in order to pull "topic/phy-compliance".

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

KVM: SVM: Do not setup frame pointer in __svm_vcpu_run

__svm_vcpu_run is a leaf function and does not need
a frame pointer. %rbp is also destroyed a few instructions
later when guest registers are

KVM: SVM: Do not setup frame pointer in __svm_vcpu_run

__svm_vcpu_run is a leaf function and does not need
a frame pointer. %rbp is also destroyed a few instructions
later when guest registers are loaded.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Message-Id: <20200409120440.1427215-1-ubizjak@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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KVM: SVM: move more vmentry code to assembly

Manipulate IF around vmload/vmsave to remove the confusing usage of
local_irq_enable where interrupts are actually disabled via GIF.
And stuff the RSB im

KVM: SVM: move more vmentry code to assembly

Manipulate IF around vmload/vmsave to remove the confusing usage of
local_irq_enable where interrupts are actually disabled via GIF.
And stuff the RSB immediately without waiting for a RET to avoid
Spectre-v2 attacks.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Merge v5.7-rc1 into drm-misc-fixes

Start the new drm-misc-fixes cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a bit by a few lines
in the Kconfig to reduce the probability of future conflicts.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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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:
"s390:
- nested virtualization fixes

x86:
- split svm.c

- miscellaneous fix

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

Pull more kvm updates from Paolo Bonzini:
"s390:
- nested virtualization fixes

x86:
- split svm.c

- miscellaneous fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: fix crash cleanup when KVM wasn't used
KVM: X86: Filter out the broadcast dest for IPI fastpath
KVM: s390: vsie: Fix possible race when shadowing region 3 tables
KVM: s390: vsie: Fix delivery of addressing exceptions
KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks
KVM: nVMX: don't clear mtf_pending when nested events are blocked
KVM: VMX: Remove unnecessary exception trampoline in vmx_vmenter
KVM: SVM: Split svm_vcpu_run inline assembly to separate file
KVM: SVM: Move SEV code to separate file
KVM: SVM: Move AVIC code to separate file
KVM: SVM: Move Nested SVM Implementation to nested.c
kVM SVM: Move SVM related files to own sub-directory

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KVM: SVM: Split svm_vcpu_run inline assembly to separate file

The compiler (GCC) does not like the situation, where there is inline
assembly block that clobbers all available machine registers in th

KVM: SVM: Split svm_vcpu_run inline assembly to separate file

The compiler (GCC) does not like the situation, where there is inline
assembly block that clobbers all available machine registers in the
middle of the function. This situation can be found in function
svm_vcpu_run in file kvm/svm.c and results in many register spills and
fills to/from stack frame.

This patch fixes the issue with the same approach as was done for
VMX some time ago. The big inline assembly is moved to a separate
assembly .S file, taking into account all ABI requirements.

There are two main benefits of the above approach:

* elimination of several register spills and fills to/from stack
frame, and consequently smaller function .text size. The binary size
of svm_vcpu_run is lowered from 2019 to 1626 bytes.

* more efficient access to a register save array. Currently, register
save array is accessed as:

7b00: 48 8b 98 28 02 00 00 mov 0x228(%rax),%rbx
7b07: 48 8b 88 18 02 00 00 mov 0x218(%rax),%rcx
7b0e: 48 8b 90 20 02 00 00 mov 0x220(%rax),%rdx

and passing ia pointer to a register array as an argument to a function one gets:

12: 48 8b 48 08 mov 0x8(%rax),%rcx
16: 48 8b 50 10 mov 0x10(%rax),%rdx
1a: 48 8b 58 18 mov 0x18(%rax),%rbx

As a result, the total size, considering that the new function size is 229
bytes, gets lowered by 164 bytes.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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