Here are some basic Tegra test results for Linux v4.0-rc2. Logs and other details at:
http://nvt.pwsan.com/pub/linux/testlogs/test_v4.0-rc2/20150304011913/
Test summary ------------
Build: zImage: Pass: ( 2/ 2): multi_v7_defconfig, tegra_defconfig
Build: Image: Pass: ( 1/ 1): defconfig
Boot to userspace: defconfig: Pass: ( 1/ 1): qemu-vexpress64
Boot to userspace: multi_v7_defconfig: Pass: ( 3/ 3): tegra114-dalmore-a04, tegra124-jetson-tk1, tegra30-beaver
Boot to userspace: tegra_defconfig: Pass: ( 3/ 3): tegra114-dalmore-a04, tegra124-jetson-tk1, tegra30-beaver
vmlinux object size (delta in bytes from test_v4.0-rc1 (c517d838eb7d07bbe9507871fab3931deccff539)): text data bss total kernel +495197 +100104 +7232 +602533 multi_v7_defconfig +168 0 0 +168 tegra_defconfig
Boot-time memory difference (delta in bytes from test_v4.0-rc1 (c517d838eb7d07bbe9507871fab3931deccff539)) avail rsrvd high freed board kconfig dtb . . . . qemu-vexpress64 defconfig __internal -592k 592k . 24k tegra114-dalmore-a04 multi_v7_defconfig tegra114-dalmore . . . . tegra114-dalmore-a04 tegra_defconfig tegra114-dalmore -592k 592k . 24k tegra124-jetson-tk1 multi_v7_defconfig tegra124-jetson-tk1 . . . . tegra124-jetson-tk1 tegra_defconfig tegra124-jetson-tk1 -592k 592k . 24k tegra30-beaver multi_v7_defconfig tegra30-beaver . . . . tegra30-beaver tegra_defconfig tegra30-beaver
An unusually large size increase from an -rc1 to an -rc2 release for multi_v7_defconfig.
Starting with this test report, an ARM64 defconfig kernel will be built and booted on QEMU Versatile Express 64.