From 532a0c57d7ff75e8f07d4e25cba4184989e2a241 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Tue, 12 Mar 2024 07:27:57 -0700 Subject: [PATCH] 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 --- arch/x86/include/asm/nospec-branch.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/nospec-branch.h b/arch/x86/include/asm/nospec-branch.h index ab19c7f1167b..2aa52cab1e46 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__ */ -- 2.39.5