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Message-ID: <20230724132045.059890995@linutronix.de>
Date: Mon, 24 Jul 2023 15:33:58 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org, Andrew Cooper <andrew.cooper3@...rix.com>,
Tom Lendacky <thomas.lendacky@....com>,
Paolo Bonzini <pbonzini@...hat.com>,
Wei Liu <wei.liu@...nel.org>,
Arjan van de Ven <arjan@...ux.intel.com>,
Juergen Gross <jgross@...e.com>,
Michael Kelley <mikelley@...rosoft.com>,
Peter Keresztes Schmidt <peter@...esztesschmidt.de>,
"Peter Zijlstra (Intel)" <peterz@...radead.org>
Subject: [patch V2 08/58] x86/apic: Nuke unused apic::inquire_remote_apic()
Put it to the other historical leftovers.
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
arch/x86/include/asm/apic.h | 16 --------------
arch/x86/kernel/apic/apic_flat_64.c | 4 ---
arch/x86/kernel/apic/apic_noop.c | 2 -
arch/x86/kernel/apic/apic_numachip.c | 2 -
arch/x86/kernel/apic/bigsmp_32.c | 2 -
arch/x86/kernel/apic/probe_32.c | 2 -
arch/x86/kernel/apic/x2apic_cluster.c | 2 -
arch/x86/kernel/apic/x2apic_phys.c | 2 -
arch/x86/kernel/apic/x2apic_uv_x.c | 1
arch/x86/kernel/smpboot.c | 38 ----------------------------------
arch/x86/xen/apic.c | 7 ------
11 files changed, 78 deletions(-)
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -66,20 +66,6 @@ enum apic_intr_mode_id {
APIC_SYMMETRIC_IO_NO_ROUTING
};
-#ifdef CONFIG_SMP
-extern void __inquire_remote_apic(int apicid);
-#else /* CONFIG_SMP */
-static inline void __inquire_remote_apic(int apicid)
-{
-}
-#endif /* CONFIG_SMP */
-
-static inline void default_inquire_remote_apic(int apicid)
-{
- if (apic_verbosity >= APIC_DEBUG)
- __inquire_remote_apic(apicid);
-}
-
/*
* With 82489DX we can't rely on apic feature bit
* retrieved via cpuid but still have to deal with
@@ -330,8 +316,6 @@ struct apic {
/* wakeup secondary CPU using 64-bit wakeup point */
int (*wakeup_secondary_cpu_64)(int apicid, unsigned long start_eip);
- void (*inquire_remote_apic)(int apicid);
-
#ifdef CONFIG_X86_32
/*
* Called very early during boot from get_smp_config(). It should
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -139,8 +139,6 @@ static struct apic apic_flat __ro_after_
.send_IPI_all = default_send_IPI_all,
.send_IPI_self = default_send_IPI_self,
- .inquire_remote_apic = default_inquire_remote_apic,
-
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi_write = native_apic_mem_write,
@@ -230,8 +228,6 @@ static struct apic apic_physflat __ro_af
.send_IPI_all = default_send_IPI_all,
.send_IPI_self = default_send_IPI_self,
- .inquire_remote_apic = default_inquire_remote_apic,
-
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi_write = native_apic_mem_write,
--- a/arch/x86/kernel/apic/apic_noop.c
+++ b/arch/x86/kernel/apic/apic_noop.c
@@ -125,8 +125,6 @@ struct apic apic_noop __ro_after_init =
.wakeup_secondary_cpu = noop_wakeup_secondary_cpu,
- .inquire_remote_apic = NULL,
-
.read = noop_apic_read,
.write = noop_apic_write,
.eoi_write = noop_apic_write,
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -273,7 +273,6 @@ static const struct apic apic_numachip1
.send_IPI_self = numachip_send_IPI_self,
.wakeup_secondary_cpu = numachip_wakeup_secondary,
- .inquire_remote_apic = NULL, /* REMRD not supported */
.read = native_apic_mem_read,
.write = native_apic_mem_write,
@@ -320,7 +319,6 @@ static const struct apic apic_numachip2
.send_IPI_self = numachip_send_IPI_self,
.wakeup_secondary_cpu = numachip_wakeup_secondary,
- .inquire_remote_apic = NULL, /* REMRD not supported */
.read = native_apic_mem_read,
.write = native_apic_mem_write,
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -153,8 +153,6 @@ static struct apic apic_bigsmp __ro_afte
.send_IPI_all = bigsmp_send_IPI_all,
.send_IPI_self = default_send_IPI_self,
- .inquire_remote_apic = default_inquire_remote_apic,
-
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi_write = native_apic_mem_write,
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -95,8 +95,6 @@ static struct apic apic_default __ro_aft
.send_IPI_all = default_send_IPI_all,
.send_IPI_self = default_send_IPI_self,
- .inquire_remote_apic = default_inquire_remote_apic,
-
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.eoi_write = native_apic_mem_write,
--- a/arch/x86/kernel/apic/x2apic_cluster.c
+++ b/arch/x86/kernel/apic/x2apic_cluster.c
@@ -265,8 +265,6 @@ static struct apic apic_x2apic_cluster _
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_self = x2apic_send_IPI_self,
- .inquire_remote_apic = NULL,
-
.read = native_apic_msr_read,
.write = native_apic_msr_write,
.eoi_write = native_apic_msr_eoi_write,
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -189,8 +189,6 @@ static struct apic apic_x2apic_phys __ro
.send_IPI_all = x2apic_send_IPI_all,
.send_IPI_self = x2apic_send_IPI_self,
- .inquire_remote_apic = NULL,
-
.read = native_apic_msr_read,
.write = native_apic_msr_write,
.eoi_write = native_apic_msr_eoi_write,
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -862,7 +862,6 @@ static struct apic apic_x2apic_uv_x __ro
.send_IPI_self = uv_send_IPI_self,
.wakeup_secondary_cpu = uv_wakeup_secondary,
- .inquire_remote_apic = NULL,
.read = native_apic_msr_read,
.write = native_apic_msr_write,
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -774,44 +774,6 @@ static void impress_friends(void)
pr_debug("Before bogocount - setting activated=1\n");
}
-void __inquire_remote_apic(int apicid)
-{
- unsigned i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
- const char * const names[] = { "ID", "VERSION", "SPIV" };
- int timeout;
- u32 status;
-
- pr_info("Inquiring remote APIC 0x%x...\n", apicid);
-
- for (i = 0; i < ARRAY_SIZE(regs); i++) {
- pr_info("... APIC 0x%x %s: ", apicid, names[i]);
-
- /*
- * Wait for idle.
- */
- status = safe_apic_wait_icr_idle();
- if (status)
- pr_cont("a previous APIC delivery may have failed\n");
-
- apic_icr_write(APIC_DM_REMRD | regs[i], apicid);
-
- timeout = 0;
- do {
- udelay(100);
- status = apic_read(APIC_ICR) & APIC_ICR_RR_MASK;
- } while (status == APIC_ICR_RR_INPROG && timeout++ < 1000);
-
- switch (status) {
- case APIC_ICR_RR_VALID:
- status = apic_read(APIC_RRR);
- pr_cont("%08x\n", status);
- break;
- default:
- pr_cont("failed\n");
- }
- }
-}
-
/*
* The Multiprocessor Specification 1.4 (1997) example code suggests
* that there should be a 10ms delay between the BSP asserting INIT
--- a/arch/x86/xen/apic.c
+++ b/arch/x86/xen/apic.c
@@ -129,10 +129,6 @@ static void xen_noop(void)
{
}
-static void xen_silent_inquire(int apicid)
-{
-}
-
static int xen_cpu_present_to_apicid(int cpu)
{
if (cpu_present(cpu))
@@ -173,9 +169,6 @@ static struct apic xen_pv_apic = {
.send_IPI_all = xen_send_IPI_all,
.send_IPI_self = xen_send_IPI_self,
#endif
- /* .wait_for_init_deassert- used by AP bootup - smp_callin which we don't use */
- .inquire_remote_apic = xen_silent_inquire,
-
.read = xen_apic_read,
.write = xen_apic_write,
.eoi_write = xen_apic_write,
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