This is a note to let you know that I've just added the patch titled
KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail
to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: kvm-nvmx-vmx_complete_nested_posted_interrupt-can-t-fail.patch and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Fri Feb 23 17:23:58 CET 2018
From: Jack Wang jinpu.wang@profitbricks.com Date: Fri, 23 Feb 2018 11:42:15 +0100 Subject: KVM: nVMX: vmx_complete_nested_posted_interrupt() can't fail To: gregkh@linuxfoundation.org, stable@vger.kernel.org Cc: David Hildenbrand david@redhat.com, Paolo Bonzini pbonzini@redhat.com, David Woodhouse dwmw@amazon.co.uk, Jack Wang jinpu.wang@profitbricks.com Message-ID: 1519382538-15143-27-git-send-email-jinpu.wangl@profitbricks.com
From: David Hildenbrand david@redhat.com
(cherry picked from commit 6342c50ad12e8ce0736e722184a7dbdea4a3477f)
vmx_complete_nested_posted_interrupt() can't fail, let's turn it into a void function.
Signed-off-by: David Hildenbrand david@redhat.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: David Woodhouse dwmw@amazon.co.uk [jwang: port to 4.4] Signed-off-by: Jack Wang jinpu.wang@profitbricks.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/x86/kvm/vmx.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
--- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4512,7 +4512,7 @@ static int vmx_cpu_uses_apicv(struct kvm return enable_apicv && lapic_in_kernel(vcpu); }
-static int vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu) +static void vmx_complete_nested_posted_interrupt(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); int max_irr; @@ -4523,13 +4523,13 @@ static int vmx_complete_nested_posted_in vmx->nested.pi_pending) { vmx->nested.pi_pending = false; if (!pi_test_and_clear_on(vmx->nested.pi_desc)) - return 0; + return;
max_irr = find_last_bit( (unsigned long *)vmx->nested.pi_desc->pir, 256);
if (max_irr == 256) - return 0; + return;
vapic_page = kmap(vmx->nested.virtual_apic_page); __kvm_apic_update_irr(vmx->nested.pi_desc->pir, vapic_page); @@ -4542,7 +4542,6 @@ static int vmx_complete_nested_posted_in vmcs_write16(GUEST_INTR_STATUS, status); } } - return 0; }
static inline bool kvm_vcpu_trigger_posted_interrupt(struct kvm_vcpu *vcpu) @@ -10155,7 +10154,8 @@ static int vmx_check_nested_events(struc return 0; }
- return vmx_complete_nested_posted_interrupt(vcpu); + vmx_complete_nested_posted_interrupt(vcpu); + return 0; }
static u32 vmx_get_preemption_timer_value(struct kvm_vcpu *vcpu)
Patches currently in stable-queue which might be from jinpu.wang@profitbricks.com are
queue-4.4/x86-paravirt-remove-noreplace-paravirt-cmdline-option.patch queue-4.4/documentation-document-array_index_nospec.patch queue-4.4/kvm-x86-make-indirect-calls-in-emulator-speculation-safe.patch queue-4.4/x86-nospec-fix-header-guards-names.patch queue-4.4/x86-retpoline-avoid-retpolines-for-built-in-__init-functions.patch queue-4.4/vfs-fdtable-prevent-bounds-check-bypass-via-speculative-execution.patch queue-4.4/kvm-nvmx-invvpid-handling-improvements.patch queue-4.4/x86-cpu-bugs-make-retpoline-module-warning-conditional.patch queue-4.4/x86-spectre-check-config_retpoline-in-command-line-parser.patch queue-4.4/x86-implement-array_index_mask_nospec.patch queue-4.4/array_index_nospec-sanitize-speculative-array-de-references.patch queue-4.4/kvm-vmx-make-indirect-call-speculation-safe.patch queue-4.4/x86-spectre-fix-spelling-mistake-vunerable-vulnerable.patch queue-4.4/kvm-nvmx-fix-kernel-panics-induced-by-illegal-invept-invvpid-types.patch queue-4.4/module-retpoline-warn-about-missing-retpoline-in-module.patch queue-4.4/x86-kvm-update-spectre-v1-mitigation.patch queue-4.4/x86-get_user-use-pointer-masking-to-limit-speculation.patch queue-4.4/x86-syscall-sanitize-syscall-table-de-references-under-speculation.patch queue-4.4/kvm-nvmx-vmx_complete_nested_posted_interrupt-can-t-fail.patch queue-4.4/x86-spectre-simplify-spectre_v2-command-line-parsing.patch queue-4.4/x86-speculation-fix-typo-ibrs_att-which-should-be-ibrs_all.patch queue-4.4/x86-spectre-report-get_user-mitigation-for-spectre_v1.patch queue-4.4/x86-introduce-barrier_nospec.patch queue-4.4/kvm-async_pf-fix-df-due-to-inject-page-not-present-and-page-ready-exceptions-simultaneously.patch queue-4.4/kvm-vmx-clean-up-declaration-of-vpid-ept-invalidation-types.patch queue-4.4/x86-bugs-drop-one-mitigation-from-dmesg.patch queue-4.4/x86-retpoline-remove-the-esp-rsp-thunk.patch queue-4.4/nl80211-sanitize-array-index-in-parse_txq_params.patch queue-4.4/kvm-nvmx-kmap-can-t-fail.patch