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| author | ShiruRen <renshiru2000@gmail.com> | 2018-08-06 10:10:25 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-08-06 10:11:56 -0700 |
| commit | 3ec074897f9d0aba21bc9f41be18f52bfbeb599e (patch) | |
| tree | 70ed3af086a393a38752ac293730b060c55fde00 | |
| parent | 56fa562dda18260440726a37ea467f6eb6aa6c12 (diff) | |
Fix a bug in PCIDs.Assign
Store the new assigned pcid in p.cache[pt].
Signed-off-by: ShiruRen <renshiru2000@gmail.com>
Change-Id: I4aee4e06559e429fb5e90cb9fe28b36139e3b4b6
PiperOrigin-RevId: 207563833
| -rw-r--r-- | pkg/sentry/platform/ring0/pagetables/pcids_x86.go | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pkg/sentry/platform/ring0/pagetables/pcids_x86.go b/pkg/sentry/platform/ring0/pagetables/pcids_x86.go index 4296371e8..227cf7aad 100644 --- a/pkg/sentry/platform/ring0/pagetables/pcids_x86.go +++ b/pkg/sentry/platform/ring0/pagetables/pcids_x86.go @@ -64,6 +64,7 @@ func (p *PCIDs) Assign(pt *PageTables) (uint16, bool) { if len(p.avail) > 0 { pcid := p.avail[len(p.avail)-1] p.avail = p.avail[:len(p.avail)-1] + p.cache[pt] = pcid // We need to flush because while this is in the available // pool, it may have been used previously. |