diff options
| author | Dave Hansen <dave.hansen@linux.intel.com> | 2021-06-23 15:02:19 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-06-23 20:44:24 +0300 |
| commit | e84ba47e313dbc097bf859bb6e4f9219883d5f78 (patch) | |
| tree | 42558057e84d4b1391640d7fa53606925a2db716 /arch/x86/include | |
| parent | 9782a712eb971ce483442076e79eb1d8d608646e (diff) | |
| download | linux-e84ba47e313dbc097bf859bb6e4f9219883d5f78.tar.xz | |
x86/fpu: Hook up PKRU into ptrace()
One nice thing about having PKRU be XSAVE-managed is that it gets naturally
exposed into the XSAVE-using ABIs. Now that XSAVE will not be used to
manage PKRU, these ABIs need to be manually enabled to deal with PKRU.
ptrace() uses copy_uabi_xstate_to_kernel() to collect the tracee's
XSTATE. As PKRU is not in the task's XSTATE buffer, use task->thread.pkru
for filling in up the ptrace buffer.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121456.508770763@linutronix.de
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/fpu/xstate.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h index 6a0aaafb93ec..4ff4a0093a48 100644 --- a/arch/x86/include/asm/fpu/xstate.h +++ b/arch/x86/include/asm/fpu/xstate.h @@ -139,7 +139,7 @@ enum xstate_copy_mode { }; struct membuf; -void copy_xstate_to_uabi_buf(struct membuf to, struct xregs_state *xsave, +void copy_xstate_to_uabi_buf(struct membuf to, struct task_struct *tsk, enum xstate_copy_mode mode); #endif |