git: 71f147c60771 - stable/12 - x86: Prefer consistent naming for loader tunables

From: Zhenlei Huang <zlei_at_FreeBSD.org>
Date: Tue, 24 Oct 2023 04:47:16 UTC
The branch stable/12 has been updated by zlei:

URL: https://cgit.FreeBSD.org/src/commit/?id=71f147c60771fb4d6cbab2833c1206e007305044

commit 71f147c60771fb4d6cbab2833c1206e007305044
Author:     Zhenlei Huang <zlei@FreeBSD.org>
AuthorDate: 2023-10-17 07:05:25 +0000
Commit:     Zhenlei Huang <zlei@FreeBSD.org>
CommitDate: 2023-10-24 04:46:31 +0000

    x86: Prefer consistent naming for loader tunables
    
    The following loader tunables do have corresponding sysctl MIBs but
    with inconsistent naming. That may be historical reason. Let's prefer
    consistent naming for them so that it will be easier to maintain.
    
     1. hw.dmar.timeout -> hw.iommu.dmar.timeout
     2. hw.lapic_eoi_suppression -> hw.apic.eoi_suppression
     3. hw.lapic_tsc_deadline -> hw.apic.timer_tsc_deadline
     4. hw.x2apic_enable -> hw.apic.x2apic_mode
    
    Those tunables are for field debugging, no need to keep old names for
    compatibility.
    
    Reviewed by:    kib
    MFC after:      3 days
    Differential Revision:  https://reviews.freebsd.org/D42248
    
    (cherry picked from commit 12cce5994b92f8235f379d660ccb28da8e69f55b)
    (cherry picked from commit 6cd7e3d118f247a8f6bc0f8162a9cb67155b7c76)
    (cherry picked from commit 8ca5539ae1e693709553729edd7e34b90d734a85)
---
 sys/x86/acpica/madt.c     | 2 +-
 sys/x86/iommu/intel_drv.c | 2 +-
 sys/x86/x86/local_apic.c  | 4 ++--
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sys/x86/acpica/madt.c b/sys/x86/acpica/madt.c
index 5c1e5b9f8848..33ba0cf8af20 100644
--- a/sys/x86/acpica/madt.c
+++ b/sys/x86/acpica/madt.c
@@ -203,7 +203,7 @@ madt_setup_local(void)
 		else if (bootverbose)
 			printf("x2APIC available but disabled %s\n", reason);
 		user_x2apic = x2apic_mode;
-		TUNABLE_INT_FETCH("hw.x2apic_enable", &user_x2apic);
+		TUNABLE_INT_FETCH("hw.apic.x2apic_mode", &user_x2apic);
 		if (user_x2apic != x2apic_mode) {
 			if (bios_x2apic && !user_x2apic)
 				printf("x2APIC disabled by tunable and "
diff --git a/sys/x86/iommu/intel_drv.c b/sys/x86/iommu/intel_drv.c
index 02daa05b0cad..cab3e4882433 100644
--- a/sys/x86/iommu/intel_drv.c
+++ b/sys/x86/iommu/intel_drv.c
@@ -433,7 +433,7 @@ dmar_attach(device_t dev)
 	dmar_quirks_post_ident(unit);
 
 	timeout = dmar_get_timeout();
-	TUNABLE_UINT64_FETCH("hw.dmar.timeout", &timeout);
+	TUNABLE_UINT64_FETCH("hw.iommu.dmar.timeout", &timeout);
 	dmar_update_timeout(timeout);
 
 	for (i = 0; i < DMAR_INTR_TOTAL; i++)
diff --git a/sys/x86/x86/local_apic.c b/sys/x86/x86/local_apic.c
index 759c1ae8625a..99c7299bd3b9 100644
--- a/sys/x86/x86/local_apic.c
+++ b/sys/x86/x86/local_apic.c
@@ -556,7 +556,7 @@ native_lapic_init(vm_paddr_t addr)
 		    (cpu_feature2 & CPUID2_TSCDLT) != 0 &&
 		    tsc_is_invariant && tsc_freq != 0) {
 			lapic_timer_tsc_deadline = 1;
-			TUNABLE_INT_FETCH("hw.lapic_tsc_deadline",
+			TUNABLE_INT_FETCH("hw.apic.timer_tsc_deadline",
 			    &lapic_timer_tsc_deadline);
 		}
 
@@ -589,7 +589,7 @@ native_lapic_init(vm_paddr_t addr)
 		       "KVM -- disabling lapic eoi suppression\n");
 			lapic_eoi_suppression = 0;
 		}
-		TUNABLE_INT_FETCH("hw.lapic_eoi_suppression",
+		TUNABLE_INT_FETCH("hw.apic.eoi_suppression",
 		    &lapic_eoi_suppression);
 	}