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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH 1/1] KVM: Retry KVM_CREATE_VM on EINTR or EAGAIN |
Date: | Mon, 13 Jan 2014 12:16:11 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9 |
Il 10/01/2014 23:15, Tom Knych ha scritto: > I'll flip the conditional check > > So I traced thru the code and the one path I saw returning EINTR was: > > kvm_dev_ioctl_create_vm -> kvm_create_vm -> kvm_init_mmu_notifier -> > mmu_notifier_register -> do_mmu_notifier_register -> mm_take_all_locks > > Which checks if any signals have been raised while it was attaining > locks and returns EINTR. > > Going thru my logs - all of my errors actually are EINTRs I'll remove > the EAGAIN Andrea, what do you think here? Is it intended that kvm_init_mmu_notifier return an EINTR that percolates up to userspace? Paolo
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