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| author |  H. Peter Anvin (Intel) <hpa@zytor.com>
| 2023-12-09 13:42:14 -0800 |
|---|---|---|
| committer |  Borislav Petkov (AMD) <bp@alien8.de>
| 2024-01-31 22:02:31 +0100 |
| commit | 14619d912b658ecd9573fb88400d3830a29cadcb (patch) | |
| tree | 8de248a587245122eba294060ec9ec98c98b0d2e /arch/x86/entry/Makefile | |
| parent | x86/fred: Add a machine check entry stub for FRED (diff) | |
| download | linux-14619d912b658ecd9573fb88400d3830a29cadcb.tar.gz linux-14619d912b658ecd9573fb88400d3830a29cadcb.tar.bz2 linux-14619d912b658ecd9573fb88400d3830a29cadcb.zip | |
x86/fred: FRED entry/exit and dispatch code
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
Diffstat (limited to 'arch/x86/entry/Makefile')
| -rw-r--r-- | arch/x86/entry/Makefile | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile index ca2fe186994b..c93e7f5c2a06 100644 --- a/arch/x86/entry/Makefile +++ b/arch/x86/entry/Makefile @@ -18,6 +18,9 @@ obj-y += vdso/ obj-y += vsyscall/ obj-$(CONFIG_PREEMPTION) += thunk_$(BITS).o +CFLAGS_entry_fred.o += -fno-stack-protector +CFLAGS_REMOVE_entry_fred.o += -pg $(CC_FLAGS_FTRACE) +obj-$(CONFIG_X86_FRED) += entry_64_fred.o entry_fred.o + obj-$(CONFIG_IA32_EMULATION) += entry_64_compat.o syscall_32.o obj-$(CONFIG_X86_X32_ABI) += syscall_x32.o - |