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The code to actually handle kernel and event entry/exit using
FRED. It is split up into two files thus:
- entry_64_fred.S contains the actual entrypoints and exit code, and
saves and restores registers.
- entry_fred.c contains the two-level event dispatch code for FRED.
The first-level dispatch is on the event type, and the second-level
is on the event vector.
[ bp: Fold in an allmodconfig clang build fix:
https://lore.kernel.org/r/20240129064521.5168-1-xin3.li@intel.com
and a CONFIG_IA32_EMULATION=n build fix:
https://lore.kernel.org/r/20240127093728.1323-3-xin3.li@intel.com]
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Originally-by: Megha Dey <megha.dey@intel.com>
Co-developed-by: Xin Li <xin3.li@intel.com>
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Shan Kang <shan.kang@intel.com>
Link: https://lore.kernel.org/r/20231209214214.2932-1-xin3.li@intel.com
27 lines
657 B
Makefile
27 lines
657 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the x86 low level entry code
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#
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KASAN_SANITIZE := n
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UBSAN_SANITIZE := n
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KCOV_INSTRUMENT := n
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CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE)
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CFLAGS_common.o += -fno-stack-protector
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obj-y := entry.o entry_$(BITS).o syscall_$(BITS).o
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obj-y += common.o
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obj-y += vdso/
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obj-y += vsyscall/
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obj-$(CONFIG_PREEMPTION) += thunk_$(BITS).o
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CFLAGS_entry_fred.o += -fno-stack-protector
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CFLAGS_REMOVE_entry_fred.o += -pg $(CC_FLAGS_FTRACE)
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obj-$(CONFIG_X86_FRED) += entry_64_fred.o entry_fred.o
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obj-$(CONFIG_IA32_EMULATION) += entry_64_compat.o syscall_32.o
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obj-$(CONFIG_X86_X32_ABI) += syscall_x32.o
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