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Message-ID: <20250209071447.2521861-1-pbonzini@redhat.com>
Date: Sun, 9 Feb 2025 08:14:47 +0100
From: Paolo Bonzini <pbonzini@...hat.com>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org,
kvm@...r.kernel.org,
imbrenda@...ux.ibm.com
Subject: [GIT PULL] KVM changes for Linux 6.14-rc2
Linus,
The following changes since commit 2014c95afecee3e76ca4a56956a936e23283f05b:
Linux 6.14-rc1 (2025-02-02 15:39:26 -0800)
are available in the Git repository at:
https://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus
for you to fetch changes up to 43fb96ae78551d7bfa4ecca956b258f085d67c40:
KVM: x86/mmu: Ensure NX huge page recovery thread is alive before waking (2025-02-04 11:28:21 -0500)
One thing that stands out here is an s390 cleanup to the page table
management code, which is quite different from everyone else's in
KVM land. This came in a bit late due to the holidays and I initially
wanted to hold it until 6.15; on the other hand it would block some
of the page descriptor work due to how KVM/s390 used page->index and
page->lru for its own stuff; so, here it is. The rest is bugfixes,
mostly ARM.
----------------------------------------------------------------
ARM:
* Correctly clean the BSS to the PoC before allowing EL2 to access it
on nVHE/hVHE/protected configurations
* Propagate ownership of debug registers in protected mode after
the rework that landed in 6.14-rc1
* Stop pretending that we can run the protected mode without a GICv3
being present on the host
* Fix a use-after-free situation that can occur if a vcpu fails to
initialise the NV shadow S2 MMU contexts
* Always evaluate the need to arm a background timer for fully emulated
guest timers
* Fix the emulation of EL1 timers in the absence of FEAT_ECV
* Correctly handle the EL2 virtual timer, specially when HCR_EL2.E2H==0
s390:
* move some of the guest page table (gmap) logic into KVM itself,
inching towards the final goal of completely removing gmap from the
non-kvm memory management code. As an initial set of cleanups, move
some code from mm/gmap into kvm and start using __kvm_faultin_pfn()
to fault-in pages as needed; but especially stop abusing page->index
and page->lru to aid in the pgdesc conversion.
x86:
* Add missing check in the fix to defer starting the huge page recovery
vhost_task
* SRSO_USER_KERNEL_NO does not need SYNTHESIZED_F
----------------------------------------------------------------
Christoph Schlameuss (1):
KVM: s390: selftests: Streamline uc_skey test to issue iske after sske
Claudio Imbrenda (14):
KVM: s390: wrapper for KVM_BUG
KVM: s390: fake memslot for ucontrol VMs
KVM: s390: selftests: fix ucontrol memory region test
KVM: s390: move pv gmap functions into kvm
KVM: s390: use __kvm_faultin_pfn()
KVM: s390: get rid of gmap_fault()
KVM: s390: get rid of gmap_translate()
KVM: s390: move some gmap shadowing functions away from mm/gmap.c
KVM: s390: stop using page->index for non-shadow gmaps
KVM: s390: stop using lists to keep track of used dat tables
KVM: s390: move gmap_shadow_pgt_lookup() into kvm
KVM: s390: remove useless page->index usage
KVM: s390: move PGSTE softbits
KVM: s390: remove the last user of page->index
Colin Ian King (1):
KVM: selftests: Fix spelling mistake "initally" -> "initially"
David Hildenbrand (4):
KVM: s390: vsie: fix some corner-cases when grabbing vsie pages
KVM: s390: vsie: stop using page->index
KVM: s390: vsie: stop messing with page refcount
KVM: s390: vsie: stop using "struct page" for vsie page
Lokesh Vutla (1):
KVM: arm64: Flush hyp bss section after initialization of variables in bss
Marc Zyngier (4):
KVM: arm64: Fix nested S2 MMU structures reallocation
KVM: arm64: timer: Always evaluate the need for a soft timer
KVM: arm64: timer: Correctly handle EL1 timer emulation when !FEAT_ECV
KVM: arm64: timer: Don't adjust the EL2 virtual timer offset
Oliver Upton (2):
KVM: arm64: Flush/sync debug state in protected mode
KVM: arm64: Fail protected mode init if no vgic hardware is present
Paolo Bonzini (4):
kvm: x86: SRSO_USER_KERNEL_NO is not synthesized
Merge tag 'kvm-s390-next-6.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
Merge tag 'kvmarm-fixes-6.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM: remove kvm_arch_post_init_vm
Sean Christopherson (2):
KVM: Do not restrict the size of KVM-internal memory regions
KVM: x86/mmu: Ensure NX huge page recovery thread is alive before waking
Documentation/virt/kvm/api.rst | 2 +-
arch/arm64/kvm/arch_timer.c | 49 +-
arch/arm64/kvm/arm.c | 20 +
arch/arm64/kvm/hyp/nvhe/hyp-main.c | 24 +
arch/arm64/kvm/nested.c | 9 +-
arch/arm64/kvm/sys_regs.c | 16 +-
arch/s390/include/asm/gmap.h | 20 +-
arch/s390/include/asm/kvm_host.h | 6 +-
arch/s390/include/asm/pgtable.h | 21 +-
arch/s390/include/asm/uv.h | 6 +-
arch/s390/kernel/uv.c | 292 +---------
arch/s390/kvm/Makefile | 2 +-
arch/s390/kvm/gaccess.c | 44 +-
arch/s390/kvm/gmap-vsie.c | 142 +++++
arch/s390/kvm/gmap.c | 212 +++++++
arch/s390/kvm/gmap.h | 39 ++
arch/s390/kvm/intercept.c | 7 +-
arch/s390/kvm/interrupt.c | 19 +-
arch/s390/kvm/kvm-s390.c | 237 ++++++--
arch/s390/kvm/kvm-s390.h | 19 +
arch/s390/kvm/pv.c | 21 +
arch/s390/kvm/vsie.c | 106 ++--
arch/s390/mm/gmap.c | 681 +++++------------------
arch/s390/mm/pgalloc.c | 2 -
arch/x86/kvm/cpuid.c | 2 +-
arch/x86/kvm/mmu/mmu.c | 33 +-
arch/x86/kvm/x86.c | 7 +-
include/linux/kvm_host.h | 1 -
tools/testing/selftests/kvm/s390/cmma_test.c | 4 +-
tools/testing/selftests/kvm/s390/ucontrol_test.c | 32 +-
virt/kvm/kvm_main.c | 25 +-
31 files changed, 1093 insertions(+), 1007 deletions(-)
create mode 100644 arch/s390/kvm/gmap-vsie.c
create mode 100644 arch/s390/kvm/gmap.c
create mode 100644 arch/s390/kvm/gmap.h
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