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Subject[PATCH 7/8] x86: Add Kconfig/Makefile to build hardware prefetch control driver
Date
This adds Kconfig/Makefile to build hardware prefetch control driver
for x86 support. This also adds a MAINTAINERS entry.

Signed-off-by: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
---
MAINTAINERS | 1 +
arch/x86/Kconfig | 7 +++++++
arch/x86/kernel/cpu/Makefile | 2 ++
3 files changed, 10 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 0eaee76438e9..ea049bddc4e6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8448,6 +8448,7 @@ HARDWARE PREFETCH CONTROL DRIVERS
M: Kohei Tarumizu <tarumizu.kohei@fujitsu.com>
S: Maintained
F: arch/arm64/kernel/pfctl.c
+F: arch/x86/kernel/pfctl.c
F: drivers/base/pfctl.c
F: include/linux/pfctl.h

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ebe8fc76949a..069aee252ba3 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -26,6 +26,7 @@ config X86_64
depends on 64BIT
# Options that are inherently 64-bit kernel only:
select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_HAS_HWPF_CONTROL
select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
select ARCH_USE_CMPXCHG_LOCKREF
select HAVE_ARCH_SOFT_DIRTY
@@ -1377,6 +1378,12 @@ config X86_CPUID
with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
/dev/cpu/31/cpuid.

+config X86_HWPF_CONTROL
+ tristate "x86 Hardware Prefetch Control support"
+ depends on HWPF_CONTROL
+ help
+ This adds Hardware Prefetch Control driver support for X86.
+
choice
prompt "High Memory Support"
default HIGHMEM4G
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 9661e3e802be..aec62a6b37d2 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -56,6 +56,8 @@ obj-$(CONFIG_X86_LOCAL_APIC) += perfctr-watchdog.o
obj-$(CONFIG_HYPERVISOR_GUEST) += vmware.o hypervisor.o mshyperv.o
obj-$(CONFIG_ACRN_GUEST) += acrn.o

+obj-$(CONFIG_X86_HWPF_CONTROL) += pfctl.o
+
ifdef CONFIG_X86_FEATURE_NAMES
quiet_cmd_mkcapflags = MKCAP $@
cmd_mkcapflags = $(CONFIG_SHELL) $(srctree)/$(src)/mkcapflags.sh $@ $^
--
2.27.0
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