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authorDave Hansen <dave.hansen@linux.intel.com>2024-03-12 07:27:57 -0700
committerDave Hansen <dave.hansen@linux.intel.com>2024-03-12 08:33:51 -0700
commit532a0c57d7ff75e8f07d4e25cba4184989e2a241 (patch)
treee1c5c1e7751821b9729fffe74a00ee676003cb3c
parentf0551af021308a2a1163dc63d1f1bba3594208bd (diff)
downloadlinux-fs-532a0c57d7ff75e8f07d4e25cba4184989e2a241.tar.gz
Revert "x86/bugs: Use fixed addressing for VERW operand"
This was reverts commit 8009479ee919b9a91674f48050ccbff64eafedaa. It was originally in x86/urgent, but was deemed wrong so got zapped. But in the meantime, x86/urgent had been merged into x86/apic to resolve a conflict. I didn't notice the merge so didn't zap it from x86/apic and it managed to make it up with the x86/apic material. The reverted commit is known to cause some KASAN problems. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
-rw-r--r--arch/x86/include/asm/nospec-branch.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h
index ab19c7f1167bad..2aa52cab1e463a 100644
--- a/arch/x86/include/asm/nospec-branch.h
+++ b/arch/x86/include/asm/nospec-branch.h
@@ -323,7 +323,7 @@
* Note: Only the memory operand variant of VERW clears the CPU buffers.
*/
.macro CLEAR_CPU_BUFFERS
- ALTERNATIVE "", __stringify(verw mds_verw_sel), X86_FEATURE_CLEAR_CPU_BUF
+ ALTERNATIVE "", __stringify(verw _ASM_RIP(mds_verw_sel)), X86_FEATURE_CLEAR_CPU_BUF
.endm
#else /* __ASSEMBLY__ */