Sean Christopherson 5d3341d684 KVM: guest_memfd: Invalidate SHARED GPAs if gmem supports INIT_SHARED ... When invalidating gmem ranges, e.g. in response to PUNCH_HOLE, process all possible range types (PRIVATE vs. SHARED) for the gmem instance. Since since guest_memfd doesn't yet support in-place conversions, simply pivot on INIT_SHARED as a gmem instance can currently only have private or shared memory, not both. Failure to mark shared GPAs for invalidation is benign in the current code base, as only x86's TDX consumes KVM_FILTER_{PRIVATE,SHARED}, and TDX doesn't yet support INIT_SHARED with guest_memfd. However, invalidating only private GPAs is conceptually wrong and a lurking bug, e.g. could result in missed invalidations if ARM starts filtering invalidations based on attributes. Fixes: 3d3a04fad2 ("KVM: Allow and advertise support for host mmap() on guest_memfd files") Reviewed-by: Ackerley Tng <ackerleytng@google.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20251003232606.4070510-4-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>		2025-10-10 14:25:24 -07:00
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kvm	KVM: guest_memfd: Invalidate SHARED GPAs if gmem supports INIT_SHARED	2025-10-10 14:25:24 -07:00
lib	irqbypass: Require producers to pass in Linux IRQ number during registration	2025-06-20 13:52:41 -07:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00