summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2022-10-23 10:01:34 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-10-23 10:01:34 -0700
commit295dad10bfb5bc35ef0d051aec61299ebeb88855 (patch)
tree478e55db3ba2ae956819fb57cdc9751c6e9f7469 /include
parent942e01ab90151a16b79b5c0cb8e77530d1ee3dbb (diff)
parent471f0aa7fa64e23766a1473b32d9ec3f0718895a (diff)
Merge tag 'x86_urgent_for_v6.0_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov: "As usually the case, right after a major release, the tip urgent branches accumulate a couple more fixes than normal. And here is the x86, a bit bigger, urgent pile. - Use the correct CPU capability clearing function on the error path in Intel perf LBR - A CFI fix to ftrace along with a simplification - Adjust handling of zero capacity bit mask for resctrl cache allocation on AMD - A fix to the AMD microcode loader to attempt patch application on every logical thread - A couple of topology fixes to handle CPUID leaf 0x1f enumeration info properly - Drop a -mabi=ms compiler option check as both compilers support it now anyway - A couple of fixes to how the initial, statically allocated FPU buffer state is setup and its interaction with dynamic states at runtime" * tag 'x86_urgent_for_v6.0_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Fix copy_xstate_to_uabi() to copy init states correctly perf/x86/intel/lbr: Use setup_clear_cpu_cap() instead of clear_cpu_cap() ftrace,kcfi: Separate ftrace_stub() and ftrace_stub_graph() x86/ftrace: Remove ftrace_epilogue() x86/resctrl: Fix min_cbm_bits for AMD x86/microcode/AMD: Apply the patch early on every logical thread x86/topology: Fix duplicated core ID within a package x86/topology: Fix multiple packages shown on a single-package system hwmon/coretemp: Handle large core ID value x86/Kconfig: Drop check for -mabi=ms for CONFIG_EFI_STUB x86/fpu: Exclude dynamic states from init_fpstate x86/fpu: Fix the init_fpstate size check with the actual size x86/fpu: Configure init_fpstate attributes orderly
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/vmlinux.lds.h18
1 files changed, 12 insertions, 6 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c15de165ec8f..d06ada2341cb 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -162,6 +162,16 @@
#define PATCHABLE_DISCARDS *(__patchable_function_entries)
#endif
+#ifndef CONFIG_ARCH_SUPPORTS_CFI_CLANG
+/*
+ * Simply points to ftrace_stub, but with the proper protocol.
+ * Defined by the linker script in linux/vmlinux.lds.h
+ */
+#define FTRACE_STUB_HACK ftrace_stub_graph = ftrace_stub;
+#else
+#define FTRACE_STUB_HACK
+#endif
+
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
/*
* The ftrace call sites are logged to a section whose name depends on the
@@ -169,10 +179,6 @@
* FTRACE_CALLSITE_SECTION. We capture all of them here to avoid header
* dependencies for FTRACE_CALLSITE_SECTION's definition.
*
- * Need to also make ftrace_stub_graph point to ftrace_stub
- * so that the same stub location may have different protocols
- * and not mess up with C verifiers.
- *
* ftrace_ops_list_func will be defined as arch_ftrace_ops_list_func
* as some archs will have a different prototype for that function
* but ftrace_ops_list_func() will have a single prototype.
@@ -182,11 +188,11 @@
KEEP(*(__mcount_loc)) \
KEEP_PATCHABLE \
__stop_mcount_loc = .; \
- ftrace_stub_graph = ftrace_stub; \
+ FTRACE_STUB_HACK \
ftrace_ops_list_func = arch_ftrace_ops_list_func;
#else
# ifdef CONFIG_FUNCTION_TRACER
-# define MCOUNT_REC() ftrace_stub_graph = ftrace_stub; \
+# define MCOUNT_REC() FTRACE_STUB_HACK \
ftrace_ops_list_func = arch_ftrace_ops_list_func;
# else
# define MCOUNT_REC()