From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Borislav Petkov <bp@alien8.de>,
Ashok Raj <ashok.raj@intel.com>,
Arjan van de Ven <arjan@linux.intel.com>,
Nikolay Borisov <nik.borisov@suse.com>
Subject: [patch V2 08/37] x86/microcode/intel: Remove debug code
Date: Sat, 12 Aug 2023 21:58:49 +0200 (CEST) [thread overview]
Message-ID: <20230812195728.010895747@linutronix.de> (raw)
In-Reply-To: <20230812194003.682298127@linutronix.de>
From: Thomas Gleixner <tglx@linutronix.de>
This is really of dubious value.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: Reordered in the series - Nikolay
---
arch/x86/kernel/cpu/microcode/intel.c | 75 ----------------------------------
1 file changed, 75 deletions(-)
---
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -10,15 +10,7 @@
* Copyright (C) 2012 Fenghua Yu <fenghua.yu@intel.com>
* H Peter Anvin" <hpa@zytor.com>
*/
-
-/*
- * This needs to be before all headers so that pr_debug in printk.h doesn't turn
- * printk calls into no_printk().
- *
- *#define DEBUG
- */
#define pr_fmt(fmt) "microcode: " fmt
-
#include <linux/earlycpio.h>
#include <linux/firmware.h>
#include <linux/uaccess.h>
@@ -405,69 +397,6 @@ scan_microcode(void *data, size_t size,
return patch;
}
-static void show_saved_mc(void)
-{
-#ifdef DEBUG
- int i = 0, j;
- unsigned int sig, pf, rev, total_size, data_size, date;
- struct ucode_cpu_info uci;
- struct ucode_patch *p;
-
- if (list_empty(µcode_cache)) {
- pr_debug("no microcode data saved.\n");
- return;
- }
-
- intel_cpu_collect_info(&uci);
-
- sig = uci.cpu_sig.sig;
- pf = uci.cpu_sig.pf;
- rev = uci.cpu_sig.rev;
- pr_debug("CPU: sig=0x%x, pf=0x%x, rev=0x%x\n", sig, pf, rev);
-
- list_for_each_entry(p, µcode_cache, plist) {
- struct microcode_header_intel *mc_saved_header;
- struct extended_sigtable *ext_header;
- struct extended_signature *ext_sig;
- int ext_sigcount;
-
- mc_saved_header = (struct microcode_header_intel *)p->data;
-
- sig = mc_saved_header->sig;
- pf = mc_saved_header->pf;
- rev = mc_saved_header->rev;
- date = mc_saved_header->date;
-
- total_size = get_totalsize(mc_saved_header);
- data_size = intel_microcode_get_datasize(mc_saved_header);
-
- pr_debug("mc_saved[%d]: sig=0x%x, pf=0x%x, rev=0x%x, total size=0x%x, date = %04x-%02x-%02x\n",
- i++, sig, pf, rev, total_size,
- date & 0xffff,
- date >> 24,
- (date >> 16) & 0xff);
-
- /* Look for ext. headers: */
- if (total_size <= data_size + MC_HEADER_SIZE)
- continue;
-
- ext_header = (void *)mc_saved_header + data_size + MC_HEADER_SIZE;
- ext_sigcount = ext_header->count;
- ext_sig = (void *)ext_header + EXT_HEADER_SIZE;
-
- for (j = 0; j < ext_sigcount; j++) {
- sig = ext_sig->sig;
- pf = ext_sig->pf;
-
- pr_debug("\tExtended[%d]: sig=0x%x, pf=0x%x\n",
- j, sig, pf);
-
- ext_sig++;
- }
- }
-#endif
-}
-
/*
* Save this microcode patch. It will be loaded early when a CPU is
* hot-added or resumes.
@@ -480,7 +409,6 @@ static void save_mc_for_early(struct uco
mutex_lock(&x86_cpu_microcode_mutex);
save_microcode_patch(uci, mc, size);
- show_saved_mc();
mutex_unlock(&x86_cpu_microcode_mutex);
}
@@ -631,9 +559,6 @@ int __init save_microcode_in_initrd_inte
intel_cpu_collect_info(&uci);
scan_microcode(cp.data, cp.size, &uci, true);
-
- show_saved_mc();
-
return 0;
}
next prev parent reply other threads:[~2023-08-12 20:00 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-12 19:58 [patch V2 00/37] x86/microcode: Cleanup and late loading enhancements Thomas Gleixner
2023-08-12 19:58 ` [patch V2 01/37] x86/mm: Remove unused microcode.h include Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-12 19:58 ` [patch V2 02/37] x86/microcode: Hide the config knob Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-14 21:01 ` [patch V2 02/37] " Josh Triplett
2023-08-14 21:19 ` Borislav Petkov
2023-08-14 23:57 ` Josh Triplett
2023-08-15 8:25 ` Borislav Petkov
2023-08-12 19:58 ` [patch V2 03/37] x86/microcode/intel: Move microcode functions out of cpu/intel.c Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-23 12:51 ` [patch V2 03/37] " Qiuxu Zhuo
2023-08-23 17:46 ` Thomas Gleixner
2023-08-12 19:58 ` [patch V2 04/37] x86/microcode: Include vendor headers into microcode.h Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Ashok Raj
2023-08-12 19:58 ` [patch V2 05/37] x86/microcode: Make reload_early_microcode() static Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-12 19:58 ` [patch V2 06/37] x86/microcode/intel: Rename get_datasize() since its used externally Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Ashok Raj
2023-08-12 19:58 ` [patch V2 07/37] x86/microcode: Move core specific defines to local header Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-12 19:58 ` Thomas Gleixner [this message]
2023-08-13 17:26 ` [tip: x86/microcode] x86/microcode/intel: Remove debug code tip-bot2 for Thomas Gleixner
2023-08-12 19:58 ` [patch V2 09/37] x86/microcode/intel: Remove pointless mutex Thomas Gleixner
2023-08-13 6:55 ` Nikolay Borisov
2023-08-13 9:08 ` Thomas Gleixner
2023-08-13 17:26 ` [tip: x86/microcode] " tip-bot2 for Thomas Gleixner
2023-08-12 19:58 ` [patch V2 10/37] x86/microcode/intel: Rip out mixed stepping support for Intel CPUs Thomas Gleixner
2023-08-12 19:58 ` [patch V2 11/37] x86/microcode/intel: Simplify scan_microcode() Thomas Gleixner
2023-08-12 19:58 ` [patch V2 12/37] x86/microcode/intel: Simplify and rename generic_load_microcode() Thomas Gleixner
2023-08-14 13:19 ` Borislav Petkov
2023-08-14 14:40 ` Thomas Gleixner
2023-08-12 19:58 ` [patch V2 13/37] x86/microcode/intel: Cleanup code further Thomas Gleixner
2023-08-12 19:58 ` [patch V2 14/37] x86/microcode/intel: Simplify early loading Thomas Gleixner
2023-08-12 19:58 ` [patch V2 15/37] x86/microcode/intel: Save the microcode only after a successful late-load Thomas Gleixner
2023-08-12 19:59 ` [patch V2 16/37] x86/microcode/intel: Switch to kvmalloc() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 17/37] x86/microcode/intel: Unify microcode apply() functions Thomas Gleixner
2023-08-12 19:59 ` [patch V2 18/37] x86/microcode/intel: Rework intel_cpu_collect_info() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 19/37] x86/microcode/intel: Reuse intel_cpu_collect_info() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 20/37] x86/microcode/intel: Rework intel_find_matching_signature() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 21/37] x86/microcode/amd: Read revision from hardware in collect_cpu_info_amd() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 22/37] x86/microcode: Remove pointless apply() invocation Thomas Gleixner
2023-08-12 19:59 ` [patch V2 23/37] x86/microcode: Get rid of the schedule work indirection Thomas Gleixner
2023-08-12 19:59 ` [patch V2 24/37] x86/microcode: Clean up mc_cpu_down_prep() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 25/37] x86/microcode: Handle "nosmt" correctly Thomas Gleixner
2023-08-12 19:59 ` [patch V2 26/37] x86/microcode: Clarify the late load logic Thomas Gleixner
2023-08-13 20:02 ` Nikolay Borisov
2023-08-12 19:59 ` [patch V2 27/37] x86/microcode: Sanitize __wait_for_cpus() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 28/37] x86/microcode: Add per CPU result state Thomas Gleixner
2023-08-12 19:59 ` [patch V2 29/37] x86/microcode: Add per CPU control field Thomas Gleixner
2023-08-12 19:59 ` [patch V2 30/37] x86/microcode: Provide new control functions Thomas Gleixner
2023-08-12 19:59 ` [patch V2 31/37] x86/microcode: Replace the all in one rendevouz handler Thomas Gleixner
2023-08-12 19:59 ` [patch V2 32/37] x86/microcode: Rendezvous and load in NMI Thomas Gleixner
2023-08-12 19:59 ` [patch V2 33/37] x86/microcode: Protect against instrumentation Thomas Gleixner
2023-08-12 19:59 ` [patch V2 34/37] x86/apic: Provide apic_force_nmi_on_cpu() Thomas Gleixner
2023-08-12 19:59 ` [patch V2 35/37] x86/microcode: Handle "offline" CPUs correctly Thomas Gleixner
2023-08-12 19:59 ` [patch V2 36/37] x86/microcode: Prepare for minimal revision check Thomas Gleixner
2023-08-12 19:59 ` [patch V2 37/37] x86/microcode/intel: Add a minimum required revision for late-loads Thomas Gleixner
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