Title: [279820] trunk/Source/_javascript_Core
- Revision
- 279820
- Author
- ysuz...@apple.com
- Date
- 2021-07-12 00:53:37 -0700 (Mon, 12 Jul 2021)
Log Message
[JSC] JITCage already includes guard pages
https://bugs.webkit.org/show_bug.cgi?id=227867
Reviewed by Mark Lam.
Since JITCage already includes guard pages, we do not need to allocate that additionally.
* jit/ExecutableAllocator.cpp:
(JSC::initializeJITPageReservation):
Modified Paths
Diff
Modified: trunk/Source/_javascript_Core/ChangeLog (279819 => 279820)
--- trunk/Source/_javascript_Core/ChangeLog 2021-07-12 07:40:05 UTC (rev 279819)
+++ trunk/Source/_javascript_Core/ChangeLog 2021-07-12 07:53:37 UTC (rev 279820)
@@ -1,3 +1,15 @@
+2021-07-12 Yusuke Suzuki <ysuz...@apple.com>
+
+ [JSC] JITCage already includes guard pages
+ https://bugs.webkit.org/show_bug.cgi?id=227867
+
+ Reviewed by Mark Lam.
+
+ Since JITCage already includes guard pages, we do not need to allocate that additionally.
+
+ * jit/ExecutableAllocator.cpp:
+ (JSC::initializeJITPageReservation):
+
2021-07-10 Saam Barati <sbar...@apple.com>
Continue to consult InlineAccess's Structure even after switching to a stub IC
Modified: trunk/Source/_javascript_Core/jit/ExecutableAllocator.cpp (279819 => 279820)
--- trunk/Source/_javascript_Core/jit/ExecutableAllocator.cpp 2021-07-12 07:40:05 UTC (rev 279819)
+++ trunk/Source/_javascript_Core/jit/ExecutableAllocator.cpp 2021-07-12 07:53:37 UTC (rev 279820)
@@ -356,7 +356,9 @@
if (Options::logJITCodeForPerf())
return PageReservation::reserveAndCommitWithGuardPages(reservationSize, OSAllocator::JSJITCodePages, EXECUTABLE_POOL_WRITABLE, true, false);
#endif
- return PageReservation::reserveWithGuardPages(reservationSize, OSAllocator::JSJITCodePages, EXECUTABLE_POOL_WRITABLE, true, Options::useJITCage());
+ if (Options::useJITCage())
+ return PageReservation::reserve(reservationSize, OSAllocator::JSJITCodePages, EXECUTABLE_POOL_WRITABLE, true, Options::useJITCage());
+ return PageReservation::reserveWithGuardPages(reservationSize, OSAllocator::JSJITCodePages, EXECUTABLE_POOL_WRITABLE, true, false);
};
reservation.pageReservation = tryCreatePageReservation(reservation.size);
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