diff --git a/MAINTAINERS b/MAINTAINERS
index e4bdea045e85..69b1de05a12a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7701,6 +7701,7 @@ M:	Ingo Molnar <mingo@redhat.com>
 R:	Peter Zijlstra <peterz@infradead.org>
 R:	Darren Hart <dvhart@infradead.org>
 R:	Davidlohr Bueso <dave@stgolabs.net>
+R:	André Almeida <andrealmeid@collabora.com>
 L:	linux-kernel@vger.kernel.org
 S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking/core
@@ -7708,7 +7709,7 @@ F:	Documentation/locking/*futex*
 F:	include/asm-generic/futex.h
 F:	include/linux/futex.h
 F:	include/uapi/linux/futex.h
-F:	kernel/futex.c
+F:	kernel/futex*
 F:	tools/perf/bench/futex*
 F:	tools/testing/selftests/futex/
 
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 8e0598c7d1d1..f833587e93db 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -688,6 +688,9 @@ asmlinkage long
 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 			   compat_size_t __user *len_ptr);
 
+asmlinkage long sys_futex_waitv(struct futex_waitv *waiters,
+				compat_uint_t nr_futexes, compat_uint_t flags,
+				struct __kernel_timespec __user *timo);
 /* kernel/itimer.c */
 asmlinkage long compat_sys_getitimer(int which,
 				     struct old_itimerval32 __user *it);
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index 14c8fe863c6d..90748493c582 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -880,8 +880,11 @@ __SYSCALL(__NR_memfd_secret, sys_memfd_secret)
 #define __NR_process_mrelease 448
 __SYSCALL(__NR_process_mrelease, sys_process_mrelease)
 
+#define __NR_futex_waitv 449
+__SC_COMP(__NR_futex_waitv, sys_futex_waitv, compat_sys_futex_waitv)
+
 #undef __NR_syscalls
-#define __NR_syscalls 449
+#define __NR_syscalls 450
 
 /*
  * 32 bit systems traditionally used different
diff --git a/include/uapi/linux/futex.h b/include/uapi/linux/futex.h
index 235e5b2facaa..71a5df8d2689 100644
--- a/include/uapi/linux/futex.h
+++ b/include/uapi/linux/futex.h
@@ -43,6 +43,31 @@
 #define FUTEX_CMP_REQUEUE_PI_PRIVATE	(FUTEX_CMP_REQUEUE_PI | \
 					 FUTEX_PRIVATE_FLAG)
 
+/*
+ * Flags to specify the bit length of the futex word for futex2 syscalls.
+ * Currently, only 32 is supported.
+ */
+#define FUTEX_32		2
+
+/*
+ * Max numbers of elements in a futex_waitv array
+ */
+#define FUTEX_WAITV_MAX		128
+
+/**
+ * struct futex_waitv - A waiter for vectorized wait
+ * @val:	Expected value at uaddr
+ * @uaddr:	User address to wait on
+ * @flags:	Flags for this waiter
+ * @__reserved:	Reserved member to preserve data alignment. Should be 0.
+ */
+struct futex_waitv {
+	__u64 val;
+	__u64 uaddr;
+	__u32 flags;
+	__u32 __reserved;
+};
+
 /*
  * Support for robust futexes: the kernel cleans up held futexes at
  * thread exit time.
diff --git a/init/Kconfig b/init/Kconfig
index e708180e9a59..802f5f7be905 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1567,6 +1567,13 @@ config FUTEX
 	  support for "fast userspace mutexes".  The resulting kernel may not
 	  run glibc-based applications correctly.
 
+config FUTEX2
+	bool "Enable futex2 support" if EXPERT
+	depends on FUTEX
+	default y
+	help
+	  Support for futex2 interface.
+
 config FUTEX_PI
 	bool
 	depends on FUTEX && RT_MUTEXES
diff --git a/kernel/Makefile b/kernel/Makefile
index 4df609be42d0..1eaf2af50283 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_PROFILING) += profile.o
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
 obj-y += time/
 obj-$(CONFIG_FUTEX) += futex.o
+obj-$(CONFIG_FUTEX2) += futex2.o
 obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
 obj-$(CONFIG_SMP) += smp.o
 ifneq ($(CONFIG_SMP),y)
diff --git a/kernel/futex.c b/kernel/futex.c
index 58f2dc29c408..ab3d513fceb1 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2707,6 +2707,207 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q,
 	__set_current_state(TASK_RUNNING);
 }
 
+/**
+ * unqueue_multiple - Remove various futexes from their hash bucket
+ * @v:	   The list of futexes to unqueue
+ * @count: Number of futexes in the list
+ *
+ * Helper to unqueue a list of futexes. This can't fail.
+ *
+ * Return:
+ *  - >=0 - Index of the last futex that was awoken;
+ *  - -1  - No futex was awoken
+ */
+static int unqueue_multiple(struct futex_vector *v, int count)
+{
+	int ret = -1, i;
+
+	for (i = 0; i < count; i++) {
+		if (!unqueue_me(&v[i].q))
+			ret = i;
+	}
+
+	return ret;
+}
+
+/**
+ * futex_wait_multiple_setup - Prepare to wait and enqueue multiple futexes
+ * @vs:		The futex list to wait on
+ * @count:	The size of the list
+ * @awaken:	Index of the last awoken futex, if any. Used to notify the
+ *		caller that it can return this index to userspace (return parameter)
+ *
+ * Prepare multiple futexes in a single step and enqueue them. This may fail if
+ * the futex list is invalid or if any futex was already awoken. On success the
+ * task is ready to interruptible sleep.
+ *
+ * Return:
+ *  -  1 - One of the futexes was awaken by another thread
+ *  -  0 - Success
+ *  - <0 - -EFAULT, -EWOULDBLOCK or -EINVAL
+ */
+static int futex_wait_multiple_setup(struct futex_vector *vs, int count, int *awaken)
+{
+	struct futex_hash_bucket *hb;
+	bool retry = false;
+	int ret, i;
+	u32 uval;
+
+	/*
+	 * Enqueuing multiple futexes is tricky, because we need to enqueue
+	 * each futex in the list before dealing with the next one to avoid
+	 * deadlocking on the hash bucket. But, before enqueuing, we need to
+	 * make sure that current->state is TASK_INTERRUPTIBLE, so we don't
+	 * absorb any awake events, which cannot be done before the
+	 * get_futex_key of the next key, because it calls get_user_pages,
+	 * which can sleep. Thus, we fetch the list of futexes keys in two
+	 * steps, by first pinning all the memory keys in the futex key, and
+	 * only then we read each key and queue the corresponding futex.
+	 *
+	 * Private futexes doesn't need to recalculate hash in retry, so skip
+	 * get_futex_key() when retrying.
+	 */
+retry:
+	for (i = 0; i < count; i++) {
+		if ((vs[i].w.flags & FUTEX_PRIVATE_FLAG) && retry)
+			continue;
+
+		ret = get_futex_key(u64_to_user_ptr(vs[i].w.uaddr),
+				    !(vs[i].w.flags & FUTEX_PRIVATE_FLAG),
+				    &vs[i].q.key, FUTEX_READ);
+
+		if (unlikely(ret))
+			return ret;
+	}
+
+	set_current_state(TASK_INTERRUPTIBLE);
+
+	for (i = 0; i < count; i++) {
+		u32 __user *uaddr = (u32 __user *)vs[i].w.uaddr;
+		struct futex_q *q = &vs[i].q;
+		u32 val = (u32)vs[i].w.val;
+
+		hb = queue_lock(q);
+		ret = get_futex_value_locked(&uval, uaddr);
+
+		if (!ret && uval == val) {
+			/*
+			 * The bucket lock can't be held while dealing with the
+			 * next futex. Queue each futex at this moment so hb can
+			 * be unlocked.
+			 */
+			queue_me(q, hb);
+			continue;
+		}
+
+		queue_unlock(hb);
+		__set_current_state(TASK_RUNNING);
+
+		/*
+		 * Even if something went wrong, if we find out that a futex
+		 * was awaken, we don't return error and return this index to
+		 * userspace
+		 */
+		*awaken = unqueue_multiple(vs, i);
+		if (*awaken >= 0)
+			return 1;
+
+		if (uval != val)
+			return -EWOULDBLOCK;
+
+		if (ret) {
+			/*
+			 * If we need to handle a page fault, we need to do so
+			 * without any lock and any enqueued futex (otherwise
+			 * we could lose some wakeup). So we do it here, after
+			 * undoing all the work done so far. In success, we
+			 * retry all the work.
+			 */
+			if (get_user(uval, uaddr))
+				return -EFAULT;
+
+			retry = true;
+			goto retry;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * futex_sleep_multiple - Check sleeping conditions and sleep
+ * @vs:    List of futexes to wait for
+ * @count: Length of vs
+ * @to:    Timeout
+ *
+ * Sleep if and only if the timeout hasn't expired and no futex on the list has
+ * been awaken.
+ */
+static void futex_sleep_multiple(struct futex_vector *vs, unsigned int count,
+				 struct hrtimer_sleeper *to)
+{
+	if (to && !to->task)
+		return;
+
+	for (; count; count--, vs++) {
+		if (!READ_ONCE(vs->q.lock_ptr))
+			return;
+	}
+
+	freezable_schedule();
+}
+
+/**
+ * futex_wait_multiple - Prepare to wait on and enqueue several futexes
+ * @vs:		The list of futexes to wait on
+ * @count:	The number of objects
+ * @to:		Timeout before giving up and returning to userspace
+ *
+ * Entry point for the FUTEX_WAIT_MULTIPLE futex operation, this function
+ * sleeps on a group of futexes and returns on the first futex that is
+ * wake, or after the timeout has elapsed.
+ *
+ * Return:
+ *  - >=0 - Hint to the futex that was awoken
+ *  - <0  - On error
+ */
+int futex_wait_multiple(struct futex_vector *vs, unsigned int count,
+			struct hrtimer_sleeper *to)
+{
+	int ret, hint = 0;
+
+	if (to)
+		hrtimer_sleeper_start_expires(to, HRTIMER_MODE_ABS);
+
+	while (1) {
+		ret = futex_wait_multiple_setup(vs, count, &hint);
+		if (ret) {
+			if (ret > 0) {
+				/* A futex was awaken during setup */
+				ret = hint;
+			}
+			return ret;
+		}
+
+		futex_sleep_multiple(vs, count, to);
+
+		__set_current_state(TASK_RUNNING);
+
+		ret = unqueue_multiple(vs, count);
+		if (ret >= 0)
+			return ret;
+
+		if (to && !to->task)
+			return -ETIMEDOUT;
+		else if (signal_pending(current))
+			return -ERESTARTSYS;
+		/*
+		 * The final case is a spurious wakeup, for
+		 * which just retry.
+		 */
+	}
+}
+
 /**
  * futex_wait_setup() - Prepare to wait on a futex
  * @uaddr:	the futex userspace address
diff --git a/kernel/futex.h b/kernel/futex.h
index c914e0080cf1..bcd0142c3f6e 100644
--- a/kernel/futex.h
+++ b/kernel/futex.h
@@ -137,4 +137,19 @@ futex_init_timeout(u32 cmd, u32 op, struct timespec64 *ts, ktime_t *t)
 	return 0;
 }
 
+/**
+ * struct futex_vector - Auxiliary struct for futex_waitv()
+ * @w: Userspace provided data
+ * @q: Kernel side data
+ *
+ * Struct used to build an array with all data need for futex_waitv()
+ */
+struct futex_vector {
+	struct futex_waitv w;
+	struct futex_q q;
+};
+
+int futex_wait_multiple(struct futex_vector *vs, unsigned int count,
+			struct hrtimer_sleeper *to);
+
 #endif
diff --git a/kernel/futex2.c b/kernel/futex2.c
new file mode 100644
index 000000000000..34e4b1b85387
--- /dev/null
+++ b/kernel/futex2.c
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * futex2 interface system calls
+ *
+ * futex_waitv by André Almeida <andrealmeid@collabora.com>
+ *
+ * Copyright 2021 Collabora Ltd.
+ */
+
+#include "futex.h"
+
+/* Mask of available flags for each futex in futex_waitv list */
+#define FUTEXV_WAITER_MASK (FUTEX_32 | FUTEX_PRIVATE_FLAG)
+
+/* Mask of available flags for sys_futex_waitv flag */
+#define FUTEXV_MASK (FUTEX_CLOCK_REALTIME)
+
+/**
+ * futex_parse_waitv - Parse a waitv array from userspace
+ * @futexv:	Kernel side list of waiters to be filled
+ * @uwaitv:     Userspace list to be parsed
+ * @nr_futexes: Length of futexv
+ *
+ * Return: Error code on failure, 0 on success
+ */
+static int futex_parse_waitv(struct futex_vector *futexv,
+			     struct futex_waitv __user *uwaitv,
+			     unsigned int nr_futexes)
+{
+	struct futex_waitv aux;
+	unsigned int i;
+
+	for (i = 0; i < nr_futexes; i++) {
+		if (copy_from_user(&aux, &uwaitv[i], sizeof(aux)))
+			return -EFAULT;
+
+		if ((aux.flags & ~FUTEXV_WAITER_MASK) || aux.__reserved)
+			return -EINVAL;
+
+		futexv[i].w.flags = aux.flags;
+		futexv[i].w.val = aux.val;
+		futexv[i].w.uaddr = aux.uaddr;
+		futexv[i].q = futex_q_init;
+	}
+
+	return 0;
+}
+
+/**
+ * futex_waitv - Wait on a list of futexes
+ * @waiters:    List of futexes to wait on
+ * @nr_futexes: Length of futexv
+ * @flags:      Flag for timeout (monotonic/realtime)
+ * @timo:	Optional absolute timeout.
+ *
+ * Given an array of `struct futex_waitv`, wait on each uaddr. The thread wakes
+ * if a futex_wake() is performed at any uaddr. The syscall returns immediately
+ * if any waiter has *uaddr != val. *timo is an optional timeout value for the
+ * operation. Each waiter has individual flags. The `flags` argument for the
+ * syscall should be used solely for specifying the timeout as realtime, if
+ * needed. Flags for shared futexes, sizes, etc. should be used on the
+ * individual flags of each waiter.
+ *
+ * Returns the array index of one of the awaken futexes. There's no given
+ * information of how many were awakened, or any particular attribute of it (if
+ * it's the first awakened, if it is of the smaller index...).
+ */
+static long futex_waitv(struct futex_waitv __user *waiters, unsigned int nr_futexes,
+			unsigned int flags, struct __kernel_timespec __user *timo)
+{
+	struct hrtimer_sleeper to;
+	struct futex_vector *futexv;
+	struct timespec64 ts;
+	ktime_t time;
+	int ret;
+
+	if (flags & ~FUTEXV_MASK)
+		return -EINVAL;
+
+	if (!nr_futexes || nr_futexes > FUTEX_WAITV_MAX || !waiters)
+		return -EINVAL;
+
+	if (timo) {
+		int flag_clkid = (flags & FUTEX_CLOCK_REALTIME) ? FLAGS_CLOCKRT : 0;
+
+		if (get_timespec64(&ts, timo))
+			return -EFAULT;
+
+		/*
+		 * Since there's no opcode for futex_waitv, use
+		 * FUTEX_WAIT_BITSET that uses absolute timeout as well
+		 */
+		ret = futex_init_timeout(FUTEX_WAIT_BITSET, flags, &ts, &time);
+		if (ret)
+			return ret;
+
+		futex_setup_timer(&time, &to, flag_clkid, 0);
+	}
+
+	futexv = kcalloc(nr_futexes, sizeof(*futexv), GFP_KERNEL);
+	if (!futexv)
+		return -ENOMEM;
+
+	ret = futex_parse_waitv(futexv, waiters, nr_futexes);
+	if (!ret)
+		ret = futex_wait_multiple(futexv, nr_futexes, timo ? &to : NULL);
+
+	if (timo) {
+		hrtimer_cancel(&to.timer);
+		destroy_hrtimer_on_stack(&to.timer);
+	}
+
+	kfree(futexv);
+	return ret;
+}
+
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE4(futex_waitv, struct futex_waitv __user *, waiters,
+		       unsigned int, nr_futexes, unsigned int, flags,
+		       struct __kernel_timespec __user *, timo)
+{
+	return futex_waitv(waiters, nr_futexes, flags, timo);
+}
+#endif
+
+SYSCALL_DEFINE4(futex_waitv, struct futex_waitv __user *, waiters,
+		unsigned int, nr_futexes, unsigned int, flags,
+		struct __kernel_timespec __user *, timo)
+{
+	return futex_waitv(waiters, nr_futexes, flags, timo);
+}
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 64578adfe115..55f07c8feaf6 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -151,6 +151,10 @@ COND_SYSCALL_COMPAT(set_robust_list);
 COND_SYSCALL(get_robust_list);
 COND_SYSCALL_COMPAT(get_robust_list);
 
+/* kernel/futex2.c */
+COND_SYSCALL(futex_waitv);
+COND_SYSCALL_COMPAT(futex_waitv);
+
 /* kernel/hrtimer.c */
 
 /* kernel/itimer.c */
