[SRU][jammy/linux-azure-5.19, kinetic/linux-azure, lunar/linux-azure][PATCH] Revert "UBUNTU: SAUCE: TDX: Work around the segfault issue in glibc 2.35 in Ubuntu 22.04."

[Ioanna Alifieraki]

BugLink: https://bugs.launchpad.net/bugs/2011421

This reverts commit 5e304319d26d7003e648bd7a68322537dddbdaed.

Commit 5e304319d26d ("UBUNTU: SAUCE: TDX: Work around the segfault issue
in glibc 2.35 in Ubuntu 22.04.") was added to work around a bug in
glibc. Glibc is getting fixed in LP#2011421 and we can drop this.

Signed-off-by: Ioanna Alifieraki <ioanna-maria.alifieraki at canonical.com>
---
 arch/x86/coco/tdx/tdx.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/arch/x86/coco/tdx/tdx.c b/arch/x86/coco/tdx/tdx.c
index 3c853e18320e..b7af93ca319e 100644
--- a/arch/x86/coco/tdx/tdx.c
+++ b/arch/x86/coco/tdx/tdx.c
@@ -318,18 +318,6 @@ static int handle_cpuid(struct pt_regs *regs, struct ve_info *ve)
 		.r13 = regs->cx,
 	};
 
-	/*
-	 * Work around the segfault issue in glibc 2.35 in Ubuntu 22.04.
-	 * See https://sourceware.org/bugzilla/show_bug.cgi?id=28784
-	 * Ubuntu 22.04/22.10/23.04's glibc should pick up this glibc fix:
-	 * https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=c242fcce06e3102ca663b2f992611d0bda4f2668
-	 */
-	if (regs->ax == 2) {
-		regs->ax = 0xf1ff01;
-		regs->bx = regs->cx = regs->dx = 0;
-		return ve_instr_len(ve);
-	}
-
 	/*
 	 * Only allow VMM to control range reserved for hypervisor
 	 * communication.
-- 
2.34.1