linux-kernel - [patch 11/53] x86/mpparse: Prepare for callback separation

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Message-ID: <20230807135027.012341767@linutronix.de>
Date:   Mon,  7 Aug 2023 15:52:50 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Tom Lendacky <thomas.lendacky@....com>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Huang Rui <ray.huang@....com>, Juergen Gross <jgross@...e.com>,
        Dimitri Sivanich <dimitri.sivanich@....com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sohil Mehta <sohil.mehta@...el.com>,
        K Prateek Nayak <kprateek.nayak@....com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhang Rui <rui.zhang@...el.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Feng Tang <feng.tang@...el.com>,
        Andy Shevchenko <andy@...radead.org>
Subject: [patch 11/53] x86/mpparse: Prepare for callback separation

In preparation of splitting the get_smp_config() callback, rename
default_get_smp_config() to mpparse_get_smp_config() and provide an early
and late wrapper.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/include/asm/mpspec.h |   12 ++++++++----
 arch/x86/kernel/mpparse.c     |   12 +++++++++++-
 arch/x86/kernel/x86_init.c    |    2 +-
 3 files changed, 20 insertions(+), 6 deletions(-)

--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -60,12 +60,16 @@ static inline void early_get_smp_config(
 extern void e820__memblock_alloc_reserved_mpc_new(void);
 extern int enable_update_mptable;
 extern void mpparse_find_mptable(void);
-extern void default_get_smp_config(unsigned int early);
+extern void mpparse_parse_early_smp_config(void);
+extern void mpparse_parse_smp_config(void);
+extern void mpparse_get_smp_config(unsigned int early);
 #else
 static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
-#define enable_update_mptable	(0)
-#define mpparse_find_mptable	x86_init_noop
-#define default_get_smp_config	x86_init_uint_noop
+#define enable_update_mptable		(0)
+#define mpparse_find_mptable		x86_init_noop
+#define mpparse_parse_early_smp_config	x86_init_noop
+#define mpparse_parse_smp_config	x86_init_noop
+#define mpparse_get_smp_config		x86_init_uint_noop
 #endif
 
 int generic_processor_info(int apicid);
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -476,7 +476,7 @@ static int __init check_physptr(struct m
 /*
  * Scan the memory blocks for an SMP configuration block.
  */
-void __init default_get_smp_config(unsigned int early)
+void __init mpparse_get_smp_config(unsigned int early)
 {
 	struct mpf_intel *mpf;
 
@@ -541,6 +541,16 @@ void __init default_get_smp_config(unsig
 	early_memunmap(mpf, sizeof(*mpf));
 }
 
+void __init mpparse_parse_early_smp_config(void)
+{
+	mpparse_get_smp_config(true);
+}
+
+void __init mpparse_parse_smp_config(void)
+{
+	mpparse_get_smp_config(false);
+}
+
 static void __init smp_reserve_memory(struct mpf_intel *mpf)
 {
 	memblock_reserve(mpf->physptr, get_mpc_size(mpf->physptr));
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -71,7 +71,7 @@ struct x86_init_ops x86_init __initdata
 	.mpparse = {
 		.setup_ioapic_ids	= x86_init_noop,
 		.find_mptable		= mpparse_find_mptable,
-		.get_smp_config		= default_get_smp_config,
+		.get_smp_config		= mpparse_get_smp_config,
 	},
 
 	.irqs = {