Catalin Marinas 9cf09d68b8 arm64: xen: Enable user access before a privcmd hvc call ... Privcmd calls are issued by the userspace. The kernel needs to enable access to TTBR0_EL1 as the hypervisor would issue stage 1 translations to user memory via AT instructions. Since AT instructions are not affected by the PAN bit (ARMv8.1), we only need the explicit uaccess_enable/disable if the TTBR0 PAN option is enabled. Reviewed-by: Julien Grall <julien.grall@arm.com> Acked-by: Stefano Stabellini <sstabellini@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>		2016-11-21 18:48:55 +00:00
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hypercall.S	arm64: xen: Enable user access before a privcmd hvc call	2016-11-21 18:48:55 +00:00
Makefile	ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services	2016-07-06 10:34:46 +01:00