Paolo Bonzini 4361f5aa8b KVM x86 fixes for 6.18: ... - Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test for the bug fixed by commit 3ccbf6f470 ("KVM: x86/mmu: Return -EAGAIN if userspace deletes/moves memslot during prefault") - Don't try to get PMU capabbilities from perf when running a CPU with hybrid CPUs/PMUs, as perf will rightly WARN. - Rework KVM_CAP_GUEST_MEMFD_MMAP (newly introduced in 6.18) into a more generic KVM_CAP_GUEST_MEMFD_FLAGS - Add a guest_memfd INIT_SHARED flag and require userspace to explicitly set said flag to initialize memory as SHARED, irrespective of MMAP. The behavior merged in 6.18 is that enabling mmap() implicitly initializes memory as SHARED, which would result in an ABI collision for x86 CoCo VMs as their memory is currently always initialized PRIVATE. - Allow mmap() on guest_memfd for x86 CoCo VMs, i.e. on VMs with private memory, to enable testing such setups, i.e. to hopefully flush out any other lurking ABI issues before 6.18 is officially released. - Add testcases to the guest_memfd selftest to cover guest_memfd without MMAP, and host userspace accesses to mmap()'d private memory. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKTobbabEP7vbhhN9OlYIJqCjN/0FAmjyszoACgkQOlYIJqCj N/03+g/9FPoIPxGL9+tJyGahdH2Mygiip8Q3tUTlGVkskp+dplf+6T51ogdqBOkS tvlGjccxAOVW73ijn8ox7UtGSY9B1IJ+rj/uhsBOMFQptyUJEv4iEujFKB/t5RIF gOTVVR6Z/mcrYJY7F21qBPCHPbz++rEXrfgyAsosz6tpS/nL6vrNdp1LZlcsLM/k 5DuhkQHLEwJoUXO5VUsBWRa3gRdOuZ+SJGd4C1mfDwXagxe8uFYRO/vraOV9dKJx l9RxKPIhf42cfu9tIeJYDJyXIDgzXUEND4smVw/ito1SeakBlC9rQ15ya8ETLAEX tHzmj38RPOfjsycGKIRhlLzQx77b+t7FhNdse19QC3p3u9Jn8FuMyFcGZuiaP5kK e9Xrp/zcaCNfHB6gGKEud7h7fpV9yB8SNlCsP81if73buq3qHx0+jeVg3jCS4mkb zGY7CG+oKJOdTSN8JAh8nJMM4bUv5m8myr6yYGU+SsGBQsyPyqQdRWuKdQyOQIVC RZSWXSjKfmT5FwSs0KRI0yUjMeUYbgwrsysFuS3qX62mZpr0vLaPoiYFvuffe9gB W3Tt98QNPtBmJdINNncgKvbn3sp/CzUHirygaI0APZwh6QQAkL1Dp2beA1i95uVI 8uin4zUjRbRjUpMUaEtAQIaVMTVQqgfiPAvtcDCRBBeOGaNr81M= =lBtj -----END PGP SIGNATURE----- Merge tag 'kvm-x86-fixes-6.18-rc2' of https://github.com/kvm-x86/linux into HEAD KVM x86 fixes for 6.18: - Expand the KVM_PRE_FAULT_MEMORY selftest to add a regression test for the bug fixed by commit 3ccbf6f470 ("KVM: x86/mmu: Return -EAGAIN if userspace deletes/moves memslot during prefault") - Don't try to get PMU capabbilities from perf when running a CPU with hybrid CPUs/PMUs, as perf will rightly WARN. - Rework KVM_CAP_GUEST_MEMFD_MMAP (newly introduced in 6.18) into a more generic KVM_CAP_GUEST_MEMFD_FLAGS - Add a guest_memfd INIT_SHARED flag and require userspace to explicitly set said flag to initialize memory as SHARED, irrespective of MMAP. The behavior merged in 6.18 is that enabling mmap() implicitly initializes memory as SHARED, which would result in an ABI collision for x86 CoCo VMs as their memory is currently always initialized PRIVATE. - Allow mmap() on guest_memfd for x86 CoCo VMs, i.e. on VMs with private memory, to enable testing such setups, i.e. to hopefully flush out any other lurking ABI issues before 6.18 is officially released. - Add testcases to the guest_memfd selftest to cover guest_memfd without MMAP, and host userspace accesses to mmap()'d private memory.		2025-10-18 10:25:43 +02:00
..
acrn
coco	ARM:	2024-07-20 12:41:03 -07:00
hyperv	Documentation: hyperv: Update VMBus doc with new features and info	2025-05-23 16:30:56 +00:00
kvm	KVM x86 fixes for 6.18:	2025-10-18 10:25:43 +02:00
uml	um: Remove legacy network transport infrastructure	2025-05-05 10:26:59 +02:00
guest-halt-polling.rst	Documentation: virt: correct location of haltpoll module params	2023-06-16 08:17:21 -06:00
index.rst	Docs/subsystem-apis: Remove '[The ]Linux' prefixes from titles of listed documents	2023-01-24 15:27:08 -07:00
ne_overview.rst
paravirt_ops.rst	Documentation: virt: Clean up paravirt_ops doc	2023-06-19 12:09:54 +02:00