Hi Mark,
On 19/07/17 17:01, Mark Rutland wrote:
+#define HWCAP_APIA (1 << 16)
Can you rename it to HWCAP_ARM64_APIA or HWCAP_ARM_APIA? When we
use it in user space, at least in GDB, we usually do this,
#ifndef HWCAP_APIA
#define HWCAP_APIA (1 << 16)
#endif
However, the code use th
On 19/07/17 17:01, Mark Rutland wrote:
If authentication fails, bits are set in the pointer such that it is guaranteed
to cause a fault if used.
How does user space know the fault is caused by authentication fail?
When GDB is debugging a program, and it failed in pointer
authentication, I assum
On 19/07/17 17:01, Mark Rutland wrote:
* Should the kernel remove PACs when unwinding user stacks?
This is simple to do, but it's arguably placing a policy in the kernel as to
what we expect user stacks to look like. Regardless, userspace will have to
perform this when unwinding with DWARF