Ben Gardon bc8a3d8925 kvm: mmu: Fix overflow on kvm mmu page limit calculation ... KVM bases its memory usage limits on the total number of guest pages across all memslots. However, those limits, and the calculations to produce them, use 32 bit unsigned integers. This can result in overflow if a VM has more guest pages that can be represented by a u32. As a result of this overflow, KVM can use a low limit on the number of MMU pages it will allocate. This makes KVM unable to map all of guest memory at once, prompting spurious faults. Tested: Ran all kvm-unit-tests on an Intel Haswell machine. This patch introduced no new failures. Signed-off-by: Ben Gardon <bgardon@google.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2019-04-16 15:37:30 +02:00
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vmx	KVM: nVMX: always use early vmcs check when EPT is disabled	2019-04-16 15:37:12 +02:00
Kconfig	treewide: surround Kconfig file paths with double quotes	2018-12-22 00:25:54 +09:00
Makefile	KVM: x86: fix TRACE_INCLUDE_PATH and remove -I. header search paths	2019-01-25 19:12:37 +01:00
cpuid.c	ARM: some cleanups, direct physical timer assignment, cache sanitization	2019-03-15 15:00:28 -07:00
cpuid.h	KVM/x86: Update the reverse_cpuid list to include CPUID_7_EDX	2018-02-03 23:06:51 +01:00
debugfs.c	kvm: x86: export TSC information to user-space	2016-09-16 16:57:48 +02:00
emulate.c	jump_label: move 'asm goto' support test to Kconfig	2019-01-06 09:46:51 +09:00
hyperv.c	x86/kvm/hyper-v: avoid spurious pending stimer on vCPU init	2019-03-28 17:29:03 +01:00
hyperv.h	x86/kvm/hyper-v: Introduce KVM_GET_SUPPORTED_HV_CPUID	2018-12-14 17:59:54 +01:00
i8254.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
i8254.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
i8259.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
ioapic.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
ioapic.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq.c	KVM: x86: Rename interrupt.pending to interrupt.injected	2018-03-28 22:47:06 +02:00
irq.h	KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING	2017-05-02 14:45:45 +02:00
irq_comm.c	KVM: x86: don't hold kvm->lock in KVM_SET_GSI_ROUTING	2017-05-02 14:45:45 +02:00
kvm_cache_regs.h	KVM: x86: Add requisite includes to kvm_cache_regs.h	2018-12-14 12:34:22 +01:00
lapic.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
lapic.h	KVM: hyperv: define VP assist page helpers	2018-10-17 00:30:13 +02:00
mmu.c	kvm: mmu: Fix overflow on kvm mmu page limit calculation	2019-04-16 15:37:30 +02:00
mmu.h	kvm: mmu: Fix overflow on kvm mmu page limit calculation	2019-04-16 15:37:30 +02:00
mmu_audit.c	x86/kvm/mmu: make vcpu->mmu a pointer to the current MMU	2018-10-17 00:30:02 +02:00
mmutrace.h	KVM: x86: fix handling of role.cr4_pae and rename it to 'gpte_size'	2019-03-28 17:27:03 +01:00
mtrr.c	KVM: x86: generalize guest_cpuid_has_ helpers	2017-08-07 16:11:50 +02:00
page_track.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
paging_tmpl.h	KVM: Replace old tlb flush function with new one to flush a specified range.	2018-12-21 11:28:41 +01:00
pmu.c	KVM: x86: Add support for VMware backdoor Pseudo-PMCs	2018-03-16 22:02:01 +01:00
pmu.h	KVM: x86: Add support for VMware backdoor Pseudo-PMCs	2018-03-16 22:02:01 +01:00
pmu_amd.c	KVM: x86: Add support for AMD Core Perf Extension in guest	2018-03-16 22:01:28 +01:00
svm.c	KVM: SVM: prevent DBG_DECRYPT and DBG_ENCRYPT overflow	2019-04-05 20:49:42 +02:00
trace.h	KVM: x86: fix TRACE_INCLUDE_PATH and remove -I. header search paths	2019-01-25 19:12:37 +01:00
tss.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
x86.c	kvm: mmu: Fix overflow on kvm mmu page limit calculation	2019-04-16 15:37:30 +02:00
x86.h	KVM: Explicitly define the "memslot update in-progress" bit	2019-02-20 22:48:34 +01:00