linux/arch/arm64
Vincenzo Frascino 0d747f6585 arm64: compat: Alloc separate pages for vectors and sigpage
For AArch32 tasks, we install a special "[vectors]" page that contains
the sigreturn trampolines and kuser helpers, which is mapped at a fixed
address specified by the kuser helpers ABI.

Having the sigreturn trampolines in the same page as the kuser helpers
makes it impossible to disable the kuser helpers independently.

Follow the Arm implementation, by moving the signal trampolines out of
the "[vectors]" page and into their own "[sigpage]".

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
[will: tweaked comments and fixed sparse warning]
Signed-off-by: Will Deacon <will.deacon@arm.com>
2019-04-23 18:01:31 +01:00
..
boot arm64: Use the correct style for SPDX License Identifier 2019-04-16 16:28:01 +01:00
configs Allwinner arm64 defconfig changes for 5.1 2019-02-15 16:51:26 +01:00
crypto arm64: HWCAP: add support for AT_HWCAP2 2019-04-16 16:27:12 +01:00
include arm64: compat: Alloc separate pages for vectors and sigpage 2019-04-23 18:01:31 +01:00
kernel arm64: compat: Alloc separate pages for vectors and sigpage 2019-04-23 18:01:31 +01:00
kvm KVM: arm64: Reset the PMU in preemptible context 2019-03-19 17:56:24 +00:00
lib arm64: Makefile: Replace -pg with CC_FLAGS_FTRACE 2019-04-09 10:34:59 +01:00
mm arm64: Save and restore OSDLR_EL1 across suspend/resume 2019-04-09 12:39:13 +01:00
net arm64: bpf: implement jitting of JMP32 2019-01-26 13:33:02 -08:00
xen
Kconfig arm64: ptrace: Add function argument access API 2019-04-12 17:04:27 +01:00
Kconfig.debug
Kconfig.platforms This pull request brings in a build fix for arm64 with bcm2835 2019-03-18 10:31:24 -07:00
Makefile kasan, arm64: adjust shadow size for tag-based mode 2018-12-28 12:11:43 -08:00