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authorLinus Torvalds <torvalds@linux-foundation.org>2023-08-08 02:35:44 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-08-08 02:35:44 +0300
commit138bcddb86d8a4f842e4ed6f0585abc9b1a764ff (patch)
treeca19614fcb87e39ad2214c95e331d17b2c23d26b /include
parent14f9643dc90adea074a0ffb7a17d337eafc6a5cc (diff)
parent5a15d8348881e9371afdf9f5357a135489496955 (diff)
downloadlinux-138bcddb86d8a4f842e4ed6f0585abc9b1a764ff.tar.xz
Merge tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/srso fixes from Borislav Petkov: "Add a mitigation for the speculative RAS (Return Address Stack) overflow vulnerability on AMD processors. In short, this is yet another issue where userspace poisons a microarchitectural structure which can then be used to leak privileged information through a side channel" * tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/srso: Tie SBPB bit setting to microcode patch detection x86/srso: Add a forgotten NOENDBR annotation x86/srso: Fix return thunks in generated code x86/srso: Add IBPB on VMEXIT x86/srso: Add IBPB x86/srso: Add SRSO_NO support x86/srso: Add IBPB_BRTYPE support x86/srso: Add a Speculative RAS Overflow mitigation x86/bugs: Increase the x86 bugs vector size to two u32s
Diffstat (limited to 'include')
-rw-r--r--include/linux/cpu.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 6e6e57ec69e8..23ac87be1ff1 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -70,6 +70,8 @@ extern ssize_t cpu_show_mmio_stale_data(struct device *dev,
char *buf);
extern ssize_t cpu_show_retbleed(struct device *dev,
struct device_attribute *attr, char *buf);
+extern ssize_t cpu_show_spec_rstack_overflow(struct device *dev,
+ struct device_attribute *attr, char *buf);
extern __printf(4, 5)
struct device *cpu_device_create(struct device *parent, void *drvdata,