From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>
Cc: David Hildenbrand <david@kernel.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Stefan Teodorescu <fane@google.com>,
Dennis Tighe <dtighe@google.com>,
Sashiko Bot <sashiko-bot@kernel.org>,
Yan Zhao <yan.y.zhao@intel.com>
Subject: [PATCH 0/2] KVM: guest_memfd: Handle xarray binding errors
Date: Wed, 26 Aug 2026 09:51:52 -0700 [thread overview]
Message-ID: <20260826165154.766699-1-seanjc@google.com> (raw)
Handle errors when inserting into guest_memfd's binding xarray, e.g. to
do the right thing on ENOMEM.
Patch 2 is a related cleanup to remove a superflous WRITE_ONCE() (unwinding
the slot update on insertion failure isn't an option if the slot is observable,
i.e. if the WRITE_ONCE() is actually necessary).
Sean Christopherson (2):
KVM: guest_memfd: Gracefully handle xarray errors when binding a
memslot
KVM: guest_memfd: Drop superfluous WRITE_ONCE() when binding a memslot
virt/kvm/guest_memfd.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
base-commit: 76671054f9a1ff6abb976583cd8da37650acdc97
--
2.55.0.887.g758fc8c411-goog
next reply other threads:[~2026-08-26 16:52 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-26 16:51 Sean Christopherson [this message]
2026-08-26 16:51 ` [PATCH 1/2] KVM: guest_memfd: Gracefully handle xarray errors when binding a memslot Sean Christopherson
2026-08-26 17:05 ` sashiko-bot
2026-08-26 17:17 ` Sean Christopherson
2026-08-26 16:51 ` [PATCH 2/2] KVM: guest_memfd: Drop superfluous WRITE_ONCE() " Sean Christopherson
2026-08-26 17:05 ` sashiko-bot
2026-08-26 18:36 ` Sean Christopherson
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