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x86: move EARLY_AP_STARTUP into DEFAULTS

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EARLY_AP_STARTUP was introduced in 2016 (commit fdce57a042) with note:

    As a transition aid, the new behavior is moved under a new
    kernel option (EARLY_AP_STARTUP). This will allow the option
    to be turned off if need be during initial testing. I hope to
    enable this on x86 by default in a followup commit ...

It was enabled by default, but became effectively mandatory (on x86)
some time later.  Move it to DEFAULTS to avoid an unbootable system if
the option is left out of a custom kernel configuration file.

Reported by:	wollman
Reviewed by:	jhb
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D41352
This commit is contained in:
Ed Maste
2023-08-07 17:49:57 -04:00
parent d29b95ecc0
commit a51f81c2e5
7 changed files with 4 additions and 5 deletions
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sys/amd64/conf/DEFAULTS
+2
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@@ -5,6 +5,8 @@
machine amd64
options EARLY_AP_STARTUP
# Bus support.
device isa
sys/amd64/conf/FIRECRACKER
-1
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@@ -115,7 +115,6 @@ options NETGDB # netgdb(4) client support
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options EARLY_AP_STARTUP
# Pseudo devices.
device crypto # core crypto support
sys/amd64/conf/GENERIC
-1
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@@ -124,7 +124,6 @@ options NETGDB # netgdb(4) client support
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options EARLY_AP_STARTUP
# CPU frequency control
device cpufreq
sys/amd64/conf/MINIMAL
-1
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@@ -80,7 +80,6 @@ options KDB_TRACE # Print a stack trace for a panic.
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options EARLY_AP_STARTUP
# CPU frequency control
device cpufreq
sys/i386/conf/DEFAULTS
+2
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@@ -5,6 +5,8 @@
machine i386
options EARLY_AP_STARTUP
# Bus support.
device isa
options ISAPNP
sys/i386/conf/GENERIC
-1
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@@ -109,7 +109,6 @@ options NETGDB # netgdb(4) client support
# To make an SMP kernel, the next two lines are needed
options SMP # Symmetric MultiProcessor Kernel
device apic # I/O APIC
options EARLY_AP_STARTUP
# CPU frequency control
device cpufreq
sys/i386/conf/MINIMAL
-1
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@@ -88,7 +88,6 @@ options KDB_TRACE # Print a stack trace for a panic.
# Make an SMP-capable kernel by default
options SMP # Symmetric MultiProcessor Kernel
options EARLY_AP_STARTUP
device apic
# CPU frequency control