linux-kernel - [PATCH 0/3] KVM: Clean up guest/host cache read/write code

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Date:   Thu,  9 Jan 2020 15:56:17 -0800
From:   Sean Christopherson <sean.j.christopherson@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jim Mattson <jmattson@...gle.com>,
        Andrew Honig <ahonig@...gle.com>,
        Barret Rhoden <brho@...gle.com>
Subject: [PATCH 0/3] KVM: Clean up guest/host cache read/write code

Minor cleanup to fix the underlying crustiness that led to an uninitialized
variable warning reported by Barret.

The first two patches are tagged with Fixes:, but I don't know that they're
actually worth backporting to stable.  Functionally, everthing works, it's
just a bit weird and AFAICT not what is intended.  It might be preferable
to take Barret's patch[*] first and only mark that for stable, as it fixes
the immediate issue without revamping __kvm_gfn_to_hva_cache_init().

[*] https://lkml.kernel.org/r/20200109195855.17353-1-brho@google.com

Sean Christopherson (3):
  KVM: Check for a bad hva before dropping into the ghc slow path
  KVM: Clean up __kvm_gfn_to_hva_cache_init() and its callers
  KVM: Return immediately if __kvm_gfn_to_hva_cache_init() fails

 virt/kvm/kvm_main.c | 45 ++++++++++++++++++++++++++-------------------
 1 file changed, 26 insertions(+), 19 deletions(-)

-- 
2.24.1