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Message-Id: <1523829198-13236-1-git-send-email-karahmed@amazon.de> Date: Sun, 15 Apr 2018 23:53:06 +0200 From: KarimAllah Ahmed <karahmed@...zon.de> To: linux-kernel@...r.kernel.org, kvm@...r.kernel.org, pbonzini@...hat.com, rkrcmar@...hat.com Cc: KarimAllah Ahmed <karahmed@...zon.de> Subject: [PATCH v2 00/12] KVM/X86: Introduce a new guest mapping interface Guest memory can either be directly managed by the kernel (i.e. have a "struct page") or they can simply live outside kernel control (i.e. do not have a "struct page"). KVM mostly support these two modes, except in a few places where the code seems to assume that guest memory must have a "struct page". This patchset introduces a new mapping interface to map guest memory into host kernel memory which also supports PFN-based memory (i.e. memory without 'struct page'). It also converts all offending code to this interface or simply read/write directly from guest memory. As far as I can see all offending code is now fixed except the APIC-access page which I will handle in a seperate patch. Filippo Sironi (1): X86/KVM: Handle PFNs outside of kernel reach when touching GPTEs KarimAllah Ahmed (11): X86/nVMX: handle_vmon: Read 4 bytes from guest memory X86/nVMX: handle_vmptrld: Copy the VMCS12 directly from guest memory X86/nVMX: Update the PML table without mapping and unmapping the page KVM: Introduce a new guest mapping API KVM/nVMX: Use kvm_vcpu_map when mapping the L1 MSR bitmap KVM/nVMX: Use kvm_vcpu_map when mapping the virtual APIC page KVM/nVMX: Use kvm_vcpu_map when mapping the posted interrupt descriptor table KVM/X86: Use kvm_vcpu_map in emulator_cmpxchg_emulated KVM/X86: hyperv: Use kvm_vcpu_map in synic_clear_sint_msg_pending KVM/X86: hyperv: Use kvm_vcpu_map in synic_deliver_msg KVM/nSVM: Use the new mapping API for mapping guest memory arch/x86/kvm/hyperv.c | 28 ++++----- arch/x86/kvm/paging_tmpl.h | 38 +++++++++--- arch/x86/kvm/svm.c | 97 +++++++++++++++--------------- arch/x86/kvm/vmx.c | 145 +++++++++++++++------------------------------ arch/x86/kvm/x86.c | 13 ++-- include/linux/kvm_host.h | 9 +++ virt/kvm/kvm_main.c | 50 ++++++++++++++++ 7 files changed, 203 insertions(+), 177 deletions(-) Cc: Paolo Bonzini <pbonzini@...hat.com> Cc: Radim Krčmář <rkrcmar@...hat.com> Cc: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org -- 2.7.4
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