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Date: Tue, 4 May 2010 19:02:48 -0700
From: "H. Peter Anvin" <hpa@...or.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
<stable@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>,
Borislav Petkov <borislav.petkov@....com>,
"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
Liang Li <liang.li@...driver.com>,
Mark Langsdorf <mark.langsdorf@....com>,
Prarit Bhargava <prarit@...hat.com>,
Suresh Siddha <suresh.b.siddha@...el.com>,
Thomas Renninger <trenn@...e.de>,
Wang Chen <wangchen@...fujitsu.com>,
Yinghai Lu <yinghai@...nel.org>
Subject: [GIT PULL] x86 fixes for 2.6.34-rc7
Hi Linus,
Five more patches. I had originally included David Howell's rwsem
patch as well, but I saw you picked it up from email.
The following changes since commit 66f41d4c5c8a5deed66fdcc84509376c9a0bf9d8:
Linus Torvalds (1):
Linux 2.6.34-rc6
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip.git x86-fixes-for-linus
Ingo Molnar (1):
x86: Fix parse_reservetop() build failure on certain configs
Liang Li (1):
x86: Fix 'reservetop=' functionality
Mark Langsdorf (1):
powernow-k8: Fix frequency reporting
Prarit Bhargava (1):
x86: Fix NULL pointer access in irq_force_complete_move() for Xen guests
arch/x86/include/asm/io.h | 1 +
arch/x86/kernel/apic/io_apic.c | 3 +++
arch/x86/kernel/cpu/cpufreq/powernow-k8.c | 3 ++-
arch/x86/mm/ioremap.c | 14 ++++++++++++++
arch/x86/mm/pgtable_32.c | 2 ++
5 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index a1dcfa3..30a3e97 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -347,6 +347,7 @@ extern void __iomem *early_ioremap(resource_size_t phys_addr,
extern void __iomem *early_memremap(resource_size_t phys_addr,
unsigned long size);
extern void early_iounmap(void __iomem *addr, unsigned long size);
+extern void fixup_early_ioremap(void);
#define IO_SPACE_LIMIT 0xffff
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 127b871..eb2789c 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2545,6 +2545,9 @@ void irq_force_complete_move(int irq)
struct irq_desc *desc = irq_to_desc(irq);
struct irq_cfg *cfg = desc->chip_data;
+ if (!cfg)
+ return;
+
__irq_complete_move(&desc, cfg->vector);
}
#else
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index d360b56..b6215b9 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -929,7 +929,8 @@ static int fill_powernow_table_pstate(struct powernow_k8_data *data,
powernow_table[i].index = index;
/* Frequency may be rounded for these */
- if (boot_cpu_data.x86 == 0x10 || boot_cpu_data.x86 == 0x11) {
+ if ((boot_cpu_data.x86 == 0x10 && boot_cpu_data.x86_model < 10)
+ || boot_cpu_data.x86 == 0x11) {
powernow_table[i].frequency =
freq_from_fid_did(lo & 0x3f, (lo >> 6) & 7);
} else
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 5eb1ba7..12e4d2d 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -448,6 +448,20 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
+void __init fixup_early_ioremap(void)
+{
+ int i;
+
+ for (i = 0; i < FIX_BTMAPS_SLOTS; i++) {
+ if (prev_map[i]) {
+ WARN_ON(1);
+ break;
+ }
+ }
+
+ early_ioremap_init();
+}
+
static int __init check_early_ioremap_leak(void)
{
int count = 0;
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 1a8faf0..7928540 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -18,6 +18,7 @@
#include <asm/e820.h>
#include <asm/tlb.h>
#include <asm/tlbflush.h>
+#include <asm/io.h>
unsigned int __VMALLOC_RESERVE = 128 << 20;
@@ -128,6 +129,7 @@ static int __init parse_reservetop(char *arg)
address = memparse(arg, &arg);
reserve_top_address(address);
+ fixup_early_ioremap();
return 0;
}
early_param("reservetop", parse_reservetop);
--
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