Catalin Marinas f077ee2609 BACKPORT: arm64: Introduce prctl() options to control the tagged user addresses ABI ... (Upstream commit 63f0c60379). It is not desirable to relax the ABI to allow tagged user addresses into the kernel indiscriminately. This patch introduces a prctl() interface for enabling or disabling the tagged ABI with a global sysctl control for preventing applications from enabling the relaxed ABI (meant for testing user-space prctl() return error checking without reconfiguring the kernel). The ABI properties are inherited by threads of the same application and fork()'ed children but cleared on execve(). A Kconfig option allows the overall disabling of the relaxed ABI. The PR_SET_TAGGED_ADDR_CTRL will be expanded in the future to handle MTE-specific settings like imprecise vs precise exceptions. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Will Deacon <will@kernel.org> Change-Id: I2d52c5589b05415faab315c116245f1058d64750 Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Bug: 135692346		2019-10-07 15:27:39 -04:00
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asm-generic	BACKPORT: arch: wire-up pidfd_open()	2019-08-12 13:36:37 -04:00
drm	UPSTREAM: drm/virtio: add in/out fence support for explicit synchronization	2019-08-19 11:29:52 -07:00
linux	BACKPORT: arm64: Introduce prctl() options to control the tagged user addresses ABI	2019-10-07 15:27:39 -04:00
misc	ocxl: Add an IOCTL so userspace knows what OCXL features are available	2018-06-03 20:40:32 +10:00
mtd	ubi: expose the volume CRC check skip flag	2018-08-15 00:25:21 +02:00
rdma	RDMA/vmw_pvrdma: Return the correct opcode when creating WR	2019-01-22 21:40:34 +01:00
scsi
sound	ASoC: uapi: fix sound/skl-tplg-interface.h userspace compilation errors	2018-08-14 15:08:07 +01:00
video
xen	xen/gntdev: Add initial support for dma-buf UAPI	2018-07-26 23:05:14 -04:00