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
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>
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Kconfig
# SPDX-License-Identifier: GPL-2.0-only
#
# Kernel configuration file for 88SE64XX/88SE94XX SAS/SATA driver.
#
# Copyright 2007 Red Hat, Inc.
# Copyright 2008 Marvell. <kewei@marvell.com>
# Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
#
config SCSI_MVSAS
tristate "Marvell 88SE64XX/88SE94XX SAS/SATA support"
depends on PCI
select SCSI_SAS_LIBSAS
select FW_LOADER
help
This driver supports Marvell's SAS/SATA 3Gb/s PCI-E 88SE64XX and 6Gb/s
PCI-E 88SE94XX chip based host adapters.
config SCSI_MVSAS_DEBUG
bool "Compile in debug mode"
default y
depends on SCSI_MVSAS
help
Compiles the 88SE64XX/88SE94XX driver in debug mode. In debug mode,
the driver prints some messages to the console.
config SCSI_MVSAS_TASKLET
bool "Support for interrupt tasklet"
default n
depends on SCSI_MVSAS
help
Compiles the 88SE64xx/88SE94xx driver in interrupt tasklet mode.In this mode,
the interrupt will schedule a tasklet.
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