Messages in this thread | | | Date | Wed, 2 Mar 2022 19:36:35 +0100 | Subject | Re: [PATCH v3 26/28] KVM: selftests: Split out helper to allocate guest mem via memfd | From | Paolo Bonzini <> |
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On 3/1/22 00:36, David Woodhouse wrote: > On Sat, 2022-02-26 at 00:15 +0000, Sean Christopherson wrote: >> Extract the code for allocating guest memory via memfd out of >> vm_userspace_mem_region_add() and into a new helper, kvm_memfd_alloc(). >> A future selftest to populate a guest with the maximum amount of guest >> memory will abuse KVM's memslots to alias guest memory regions to a >> single memfd-backed host region, i.e. needs to back a guest with memfd >> memory without a 1:1 association between a memslot and a memfd instance. >> >> No functional change intended. >> >> Signed-off-by: Sean Christopherson <seanjc@google.com> > > While we're at it, please can we make the whole thing go away and just > return failure #ifndef MFD_CLOEXEC, instead of breaking the build on > older userspace?
We can just use old school F_SETFD if that's helpful for you.
Paolo
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