Merge tag 'kvmarm-fixes-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 fixes for 6.12, take #1

- Fix pKVM error path on init, making sure we do not change critical
  system registers as we're about to fail

- Make sure that the host's vector length is at capped by a value
  common to all CPUs

- Fix kvm_has_feat*() handling of "negative" features, as the current
  code is pretty broken

- Promote Joey to the status of official reviewer, while James steps
  down -- hopefully only temporarly

1 files changed, 18 insertions, 6 deletions

diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h
index 053b40d642de..18eefa6d93d6 100644
--- a/include/uapi/linux/ptp_clock.h
+++ b/include/uapi/linux/ptp_clock.h
@@ -155,13 +155,25 @@ struct ptp_sys_offset {
 	struct ptp_clock_time ts[2 * PTP_MAX_SAMPLES + 1];
 };
 
+/*
+ * ptp_sys_offset_extended - data structure for IOCTL operation
+ *			     PTP_SYS_OFFSET_EXTENDED
+ *
+ * @n_samples:	Desired number of measurements.
+ * @clockid:	clockid of a clock-base used for pre/post timestamps.
+ * @rsv:	Reserved for future use.
+ * @ts:		Array of samples in the form [pre-TS, PHC, post-TS]. The
+ *		kernel provides @n_samples.
+ *
+ * Starting from kernel 6.12 and onwards, the first word of the reserved-field
+ * is used for @clockid. That's backward compatible since previous kernel
+ * expect all three reserved words (@rsv[3]) to be 0 while the clockid (first
+ * word in the new structure) for CLOCK_REALTIME is '0'.
+ */
 struct ptp_sys_offset_extended {
-	unsigned int n_samples; /* Desired number of measurements. */
-	unsigned int rsv[3];    /* Reserved for future use. */
-	/*
-	 * Array of [system, phc, system] time stamps. The kernel will provide
-	 * 3*n_samples time stamps.
-	 */
+	unsigned int n_samples;
+	__kernel_clockid_t clockid;
+	unsigned int rsv[2];
 	struct ptp_clock_time ts[PTP_MAX_SAMPLES][3];
 };