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authorLai Jiangshan <jiangshan.ljs@antfin.com>2020-08-13 13:01:20 +0800
committerLai Jiangshan <laijs@linux.alibaba.com>2020-11-03 00:10:32 +0800
commit3425485b7c47861422c8bf285635d11911035383 (patch)
treefa412b1b8beaebae2bc05cd78b8e16f4c8727c7e /pkg/sentry/platform/kvm/kvm.go
parentdd056112b72abde9f570a69ad7cfc2a0a6beed14 (diff)
kvm: share upper halves among all pagtables
Fixes: #509 Signed-off-by: Lai Jiangshan <jiangshan.ljs@antfin.com> Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Diffstat (limited to 'pkg/sentry/platform/kvm/kvm.go')
-rw-r--r--pkg/sentry/platform/kvm/kvm.go3
1 files changed, 1 insertions, 2 deletions
diff --git a/pkg/sentry/platform/kvm/kvm.go b/pkg/sentry/platform/kvm/kvm.go
index dd45ad10b..5979aef97 100644
--- a/pkg/sentry/platform/kvm/kvm.go
+++ b/pkg/sentry/platform/kvm/kvm.go
@@ -158,8 +158,7 @@ func (*KVM) MaxUserAddress() usermem.Addr {
// NewAddressSpace returns a new pagetable root.
func (k *KVM) NewAddressSpace(_ interface{}) (platform.AddressSpace, <-chan struct{}, error) {
// Allocate page tables and install system mappings.
- pageTables := pagetables.New(newAllocator())
- k.machine.mapUpperHalf(pageTables)
+ pageTables := pagetables.NewWithUpper(newAllocator(), k.machine.upperSharedPageTables, ring0.KernelStartAddress)
// Return the new address space.
return &addressSpace{