From: Yuntao Wang <yuntao.wang@linux.dev>
Date: Wed, 14 Aug 2024 12:46:45 +0000 (+0800)
Subject: x86/mm: Remove duplicate check from build_cr3()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d4245fd4a62931aebd1c5e6b7b6f51b6ef7ad087;p=users%2Fjedix%2Flinux-maple.git

x86/mm: Remove duplicate check from build_cr3()

There is already a check for 'asid > MAX_ASID_AVAILABLE' in kern_pcid(), so
it is unnecessary to perform this check in build_cr3() right before calling
kern_pcid().

Remove it.

Signed-off-by: Yuntao Wang <yuntao.wang@linux.dev>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240814124645.51019-1-yuntao.wang@linux.dev
---

diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 09950feffd07e..86593d1b787d8 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -158,7 +158,6 @@ static inline unsigned long build_cr3(pgd_t *pgd, u16 asid, unsigned long lam)
 	unsigned long cr3 = __sme_pa(pgd) | lam;
 
 	if (static_cpu_has(X86_FEATURE_PCID)) {
-		VM_WARN_ON_ONCE(asid > MAX_ASID_AVAILABLE);
 		cr3 |= kern_pcid(asid);
 	} else {
 		VM_WARN_ON_ONCE(asid != 0);