================
@@ -625,6 +662,18 @@
NativeRegisterContextLinux_arm64::CacheAllRegisters(uint32_t &cached_size) {
error = ReadZA();
if (error.Fail())
return error;
+
+ // We will only be restoring ZT data if ZA is active. As writing to an
+ // inactive ZT enables ZA, which may not be desireable.
+ if (GetRegisterInfo().IsZTEnabled() &&
+ m_za_header.size > sizeof(m_za_header)) {
----------------
DavidSpickett wrote:
https://github.com/llvm/llvm-project/pull/70303 Addresses the enabled/present
thing.
I can't make a `IsZAEnabled` helper until that goes in so whichever one of
these lands first I'll sort that out.
For now I'll add some comments to clarify the current code.
https://github.com/llvm/llvm-project/pull/70205
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