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Revision 32ffa4f71e10009498ae6b54da65ab316db967bd authored by Axel Rasmussen on 19 May 2021, 20:03:33 UTC, committed by Paolo Bonzini on 27 May 2021, 11:45:55 UTC 
KVM: selftests: compute correct demand paging size
 
This is a preparatory commit needed before we can use different kinds of
backing pages for guest memory.

Previously, we used perf_test_args.host_page_size, which is the host's
native page size (commonly 4K). For VM_MEM_SRC_ANONYMOUS this turns out
to be okay, but in a follow-up commit we want to allow using different
kinds of backing memory.

Take VM_MEM_SRC_ANONYMOUS_HUGETLB for example. Without this change, if
we used that backing page type, when we issued a UFFDIO_COPY ioctl we'd
only do so with 4K, rather than the full 2M of a backing hugepage. In
this case, UFFDIO_COPY returns -EINVAL (__mcopy_atomic_hugetlb checks
the size).

Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
Message-Id: <20210519200339.829146-5-axelrasmussen@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 parent 25408e5
Raw File
Kconfig 
# SPDX-License-Identifier: GPL-2.0-only
if ARCH_ROCKCHIP || COMPILE_TEST

#
# Rockchip Soc drivers
#

config ROCKCHIP_GRF
	bool
	default y
	help
	  The General Register Files are a central component providing
	  special additional settings registers for a lot of soc-components.
	  In a lot of cases there also need to be default settings initialized
	  to make some of them conform to expectations of the kernel.

config ROCKCHIP_IODOMAIN
	tristate "Rockchip IO domain support"
	depends on OF
	help
	  Say y here to enable support io domains on Rockchip SoCs. It is
	  necessary for the io domain setting of the SoC to match the
	  voltage supplied by the regulators.

config ROCKCHIP_PM_DOMAINS
        bool "Rockchip generic power domain"
        depends on PM
        select PM_GENERIC_DOMAINS
        help
          Say y here to enable power domain support.
          In order to meet high performance and low power requirements, a power
          management unit is designed or saving power when RK3288 in low power
          mode. The RK3288 PMU is dedicated for managing the power of the whole chip.

          If unsure, say N.

endif
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