[PATCH] x86/msr: Remove misleading "unrecognized" wording in write warning

[Roman Storozhenko]

The term "unrecognized" in the warning message

  "Write to unrecognized MSR..."

  creates the impression that the MSR access is invalid or
  prohibited, which is not necessarily the case.

  Remove this wording to avoid misleading users about the nature
  of the access.

Signed-off-by: Roman Storozhenko <romeusmeister@xxxxxxxxx>
---
Additional context:

A utility that uses direct MSR writes triggered this warning during
post-silicon validation. The message was interpreted as evidence of
incorrect or prohibited MSR access due to the use of the term
"unrecognized".

This led to confusion among validation teams, although the MSR accesses
were intentional and valid.

Clarify the message to avoid misleading users in similar scenarios.
---
 arch/x86/kernel/msr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index 4469c784eaa0..16f6cde7d471 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -98,7 +98,7 @@ static int filter_write(u32 reg)
 	if (!__ratelimit(&fw_rs))
 		return 0;
 
-	pr_warn("Write to unrecognized MSR 0x%x by %s (pid: %d), tainting CPU_OUT_OF_SPEC.\n",
+	pr_warn("Write to MSR 0x%x by %s (pid: %d), tainting CPU_OUT_OF_SPEC.\n",
 	        reg, current->comm, current->pid);
 	pr_warn("See https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/about for details.\n");
 

---
base-commit: 85964cdcad0fac9a0eb7b87a0f9d88cc074b854c
change-id: 20260325-dev_roman_msr_msg-fad98620cc22

Best regards,
-- 
Roman Storozhenko <romeusmeister@xxxxxxxxx>