diff options
Diffstat (limited to 'pkg/sentry/mm/mm.go')
| -rw-r--r-- | pkg/sentry/mm/mm.go | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/pkg/sentry/mm/mm.go b/pkg/sentry/mm/mm.go index 3e85964e4..92cc87d84 100644 --- a/pkg/sentry/mm/mm.go +++ b/pkg/sentry/mm/mm.go @@ -235,6 +235,20 @@ type MemoryManager struct { // vdsoSigReturnAddr is the address of 'vdso_sigreturn'. vdsoSigReturnAddr uint64 + + // membarrierPrivateEnabled is non-zero if EnableMembarrierPrivate has + // previously been called. Since, as of this writing, + // MEMBARRIER_CMD_PRIVATE_EXPEDITED is implemented as a global memory + // barrier, membarrierPrivateEnabled has no other effect. + // + // membarrierPrivateEnabled is accessed using atomic memory operations. + membarrierPrivateEnabled uint32 + + // membarrierRSeqEnabled is non-zero if EnableMembarrierRSeq has previously + // been called. + // + // membarrierRSeqEnabled is accessed using atomic memory operations. + membarrierRSeqEnabled uint32 } // vma represents a virtual memory area. @@ -242,7 +256,7 @@ type MemoryManager struct { // +stateify savable type vma struct { // mappable is the virtual memory object mapped by this vma. If mappable is - // nil, the vma represents a private anonymous mapping. + // nil, the vma represents an anonymous mapping. mappable memmap.Mappable // off is the offset into mappable at which this vma begins. If mappable is |