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Message-ID: <20141209124424.GA29968@gmail.com>
Date: Tue, 9 Dec 2014 13:44:24 +0100
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/cleanups tree changes for v3.19
Linus,
Please pull the latest x86-cleanups-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-cleanups-for-linus
# HEAD: 29cc3730370f5fef9762a90fb515a8b1cd5fd7a6 Merge tag 'x86_queue_for_3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/cleanups
Misc cleanups.
Thanks,
Ingo
------------------>
Borislav Petkov (2):
x86, espfix: Remove stale ptemask
x86, CPU, AMD: Move K8 TLB flush filter workaround to K8 code
Fabian Frederick (6):
x86, cpuid: Use PTR_ERR_OR_ZERO
x86/sysfb: Use PTR_ERR_OR_ZERO
x86/simplefb: Use PTR_ERR_OR_ZERO
x86, msr: Use PTR_ERR_OR_ZERO
x86, msr: Convert printk to pr_foo()
x86, msr: Use seek definitions instead of hard-coded values
arch/x86/kernel/cpu/amd.c | 23 +++++++++++------------
arch/x86/kernel/cpuid.c | 2 +-
arch/x86/kernel/espfix_64.c | 3 ---
arch/x86/kernel/msr.c | 11 ++++++-----
arch/x86/kernel/sysfb.c | 2 +-
arch/x86/kernel/sysfb_simplefb.c | 5 +----
6 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 813d29d00a17..15c5df92f74e 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -566,6 +566,17 @@ static void init_amd_k8(struct cpuinfo_x86 *c)
if (!c->x86_model_id[0])
strcpy(c->x86_model_id, "Hammer");
+
+#ifdef CONFIG_SMP
+ /*
+ * Disable TLB flush filter by setting HWCR.FFDIS on K8
+ * bit 6 of msr C001_0015
+ *
+ * Errata 63 for SH-B3 steppings
+ * Errata 122 for all steppings (F+ have it disabled by default)
+ */
+ msr_set_bit(MSR_K7_HWCR, 6);
+#endif
}
static void init_amd_gh(struct cpuinfo_x86 *c)
@@ -636,18 +647,6 @@ static void init_amd(struct cpuinfo_x86 *c)
{
u32 dummy;
-#ifdef CONFIG_SMP
- /*
- * Disable TLB flush filter by setting HWCR.FFDIS on K8
- * bit 6 of msr C001_0015
- *
- * Errata 63 for SH-B3 steppings
- * Errata 122 for all steppings (F+ have it disabled by default)
- */
- if (c->x86 == 0xf)
- msr_set_bit(MSR_K7_HWCR, 6);
-#endif
-
early_init_amd(c);
/*
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 3225ae6c5180..83741a71558f 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -143,7 +143,7 @@ static int cpuid_device_create(int cpu)
dev = device_create(cpuid_class, NULL, MKDEV(CPUID_MAJOR, cpu), NULL,
"cpu%d", cpu);
- return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+ return PTR_ERR_OR_ZERO(dev);
}
static void cpuid_device_destroy(int cpu)
diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c
index 94d857fb1033..f5d0730e7b08 100644
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -122,9 +122,6 @@ static void init_espfix_random(void)
void __init init_espfix_bsp(void)
{
pgd_t *pgd_p;
- pteval_t ptemask;
-
- ptemask = __supported_pte_mask;
/* Install the espfix pud into the kernel page directory */
pgd_p = &init_level4_pgt[pgd_index(ESPFIX_BASE_ADDR)];
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index c9603ac80de5..113e70784854 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -22,6 +22,8 @@
* an SMP box will direct the access to CPU %d.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/types.h>
@@ -50,11 +52,11 @@ static loff_t msr_seek(struct file *file, loff_t offset, int orig)
mutex_lock(&inode->i_mutex);
switch (orig) {
- case 0:
+ case SEEK_SET:
file->f_pos = offset;
ret = file->f_pos;
break;
- case 1:
+ case SEEK_CUR:
file->f_pos += offset;
ret = file->f_pos;
break;
@@ -206,7 +208,7 @@ static int msr_device_create(int cpu)
dev = device_create(msr_class, NULL, MKDEV(MSR_MAJOR, cpu), NULL,
"msr%d", cpu);
- return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+ return PTR_ERR_OR_ZERO(dev);
}
static void msr_device_destroy(int cpu)
@@ -248,8 +250,7 @@ static int __init msr_init(void)
i = 0;
if (__register_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr", &msr_fops)) {
- printk(KERN_ERR "msr: unable to get major %d for msr\n",
- MSR_MAJOR);
+ pr_err("unable to get major %d for msr\n", MSR_MAJOR);
err = -EBUSY;
goto out;
}
diff --git a/arch/x86/kernel/sysfb.c b/arch/x86/kernel/sysfb.c
index 193ec2ce46c7..160386e9fc17 100644
--- a/arch/x86/kernel/sysfb.c
+++ b/arch/x86/kernel/sysfb.c
@@ -67,7 +67,7 @@ static __init int sysfb_init(void)
pd = platform_device_register_resndata(NULL, name, 0,
NULL, 0, si, sizeof(*si));
- return IS_ERR(pd) ? PTR_ERR(pd) : 0;
+ return PTR_ERR_OR_ZERO(pd);
}
/* must execute after PCI subsystem for EFI quirks */
diff --git a/arch/x86/kernel/sysfb_simplefb.c b/arch/x86/kernel/sysfb_simplefb.c
index 86179d409893..764a29f84de7 100644
--- a/arch/x86/kernel/sysfb_simplefb.c
+++ b/arch/x86/kernel/sysfb_simplefb.c
@@ -88,8 +88,5 @@ __init int create_simplefb(const struct screen_info *si,
pd = platform_device_register_resndata(NULL, "simple-framebuffer", 0,
&res, 1, mode, sizeof(*mode));
- if (IS_ERR(pd))
- return PTR_ERR(pd);
-
- return 0;
+ return PTR_ERR_OR_ZERO(pd);
}
--
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