commit 80af1b0a2c3df9dcc500731e0ce0fc84ff040239
author Peter Collingbourne <pcc@google.com> Thu Feb 27 17:45:19 2020 -0800
committer Peter Collingbourne <pcc@google.com> Fri Feb 28 01:55:20 2020 +0000
tree 2d30c668c05fa5074f8e736541be793a3d2a8d96
parent c00691aa9e5737d863387080338ac16f761232bb

Update bionic to the v2 MTE patch set.

The values of some constants have changed, and the tag mask has changed from
being an exclusion mask to an inclusion mask.

Bug: 135772972
Change-Id: I322fceae7003bee6b391e7187194ed4c0cb28c58

libc/platform/bionic/mte_kernel.h

diff --git a/libc/platform/bionic/mte_kernel.h b/libc/platform/bionic/mte_kernel.h
index 2c777c9..984d17d 100644
--- a/libc/platform/bionic/mte_kernel.h
+++ b/libc/platform/bionic/mte_kernel.h
@@ -37,7 +37,7 @@
 
 #ifdef ANDROID_EXPERIMENTAL_MTE
 
-#define HWCAP2_MTE (1 << 10)
+#define HWCAP2_MTE (1 << 18)
 #define PROT_MTE 0x20
 
 #define PR_MTE_TCF_SHIFT 1
@@ -45,10 +45,10 @@
 #define PR_MTE_TCF_SYNC (1UL << PR_MTE_TCF_SHIFT)
 #define PR_MTE_TCF_ASYNC (2UL << PR_MTE_TCF_SHIFT)
 #define PR_MTE_TCF_MASK (3UL << PR_MTE_TCF_SHIFT)
-#define PR_MTE_EXCL_SHIFT 3
-#define PR_MTE_EXCL_MASK (0xffffUL << PR_MTE_EXCL_SHIFT)
+#define PR_MTE_TAG_SHIFT 3
+#define PR_MTE_TAG_MASK (0xffffUL << PR_MTE_TAG_SHIFT)
 
-#define SEGV_MTEAERR 6
-#define SEGV_MTESERR 7
+#define SEGV_MTEAERR 8
+#define SEGV_MTESERR 9
 
 #endif