Catalin Marinas 62a7c6fac9 UPSTREAM: 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> Bug: 31432001 Change-Id: I64d827923d869c1868702c8a18efa99ea91d3151 (cherry picked from commit 9cf09d68b89ae5fe0261dcc69464bcc676900af6) Signed-off-by: Sami Tolvanen <samitolvanen@google.com>		2017-01-16 15:00:56 +05:30
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hypercall.S	UPSTREAM: arm64: xen: Enable user access before a privcmd hvc call	2017-01-16 15:00:56 +05:30
Makefile	xen/arm,arm64: enable SWIOTLB_XEN	2013-10-10 13:40:44 +00:00