KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes

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Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.

Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Zeng Chi 2026-09-21 18:24:42 +08:00 • committed by Sean Christopherson

parent 382e5d514b

commit 119e9db233

1 changed files with 3 additions and 2 deletions

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virt/kvm/kvm_main.c

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