From: Borislav Petkov <bp@alien8.de>
To: Ingo Molnar <mingo@kernel.org>
Cc: X86-ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 07/18] x86/mm: Enhance MTRR checks in kernel mapping helpers
Date: Tue, 26 May 2015 10:28:10 +0200 [thread overview]
Message-ID: <1432628901-18044-8-git-send-email-bp@alien8.de> (raw)
In-Reply-To: <1432628901-18044-1-git-send-email-bp@alien8.de>
From: Toshi Kani <toshi.kani@hp.com>
This patch adds the argument 'uniform' to mtrr_type_lookup(), which gets
set to 1 when a given range is covered uniformly by MTRRs, i.e. the
range is fully covered by a single MTRR entry or the default type.
Change pud_set_huge() and pmd_set_huge() to honor the 'uniform' flag to
see if it is safe to create a huge page mapping in the range.
This allows them to create a huge page mapping in a range covered by
a single MTRR entry of any memory type. It also detects a non-optimal
request properly. They continue to check with the WB type since it does
not effectively change the uniform mapping even if a request spans
multiple MTRR entries.
pmd_set_huge() logs a warning message to a non-optimal request so that
driver writers will be aware of such a case. Drivers should make a
mapping request aligned to a single MTRR entry when the range is covered
by MTRRs.
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Cc: dave.hansen@intel.com
Cc: Elliott@hp.com
Cc: pebolle@tiscali.nl
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: linux-mm <linux-mm@kvack.org>
Cc: x86-ml <x86@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>
Link: http://lkml.kernel.org/r/1431714237-880-7-git-send-email-toshi.kani@hp.com
[ Realign, flesh out comments, improve warning message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/mtrr.h | 4 ++--
arch/x86/kernel/cpu/mtrr/generic.c | 40 ++++++++++++++++++++++++++++----------
arch/x86/mm/pat.c | 4 ++--
arch/x86/mm/pgtable.c | 38 +++++++++++++++++++++++-------------
4 files changed, 58 insertions(+), 28 deletions(-)
diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h
index bb03a547c1ab..a31759e1edd9 100644
--- a/arch/x86/include/asm/mtrr.h
+++ b/arch/x86/include/asm/mtrr.h
@@ -31,7 +31,7 @@
* arch_phys_wc_add and arch_phys_wc_del.
*/
# ifdef CONFIG_MTRR
-extern u8 mtrr_type_lookup(u64 addr, u64 end);
+extern u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform);
extern void mtrr_save_fixed_ranges(void *);
extern void mtrr_save_state(void);
extern int mtrr_add(unsigned long base, unsigned long size,
@@ -50,7 +50,7 @@ extern int mtrr_trim_uncached_memory(unsigned long end_pfn);
extern int amd_special_default_mtrr(void);
extern int phys_wc_to_mtrr_index(int handle);
# else
-static inline u8 mtrr_type_lookup(u64 addr, u64 end)
+static inline u8 mtrr_type_lookup(u64 addr, u64 end, u8 *uniform)
{
/*
* Return no-MTRRs:
diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
index e51100c49eea..f782d9b62cb3 100644
--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -147,19 +147,24 @@ static u8 mtrr_type_lookup_fixed(u64 start, u64 end)
* Return Value:
* MTRR_TYPE_(type) - Matched memory type or default memory type (unmatched)
*
- * Output Argument:
+ * Output Arguments:
* repeat - Set to 1 when [start:end] spanned across MTRR range and type
* returned corresponds only to [start:*partial_end]. Caller has
* to lookup again for [*partial_end:end].
+ *
+ * uniform - Set to 1 when an MTRR covers the region uniformly, i.e. the
+ * region is fully covered by a single MTRR entry or the default
+ * type.
*/
static u8 mtrr_type_lookup_variable(u64 start, u64 end, u64 *partial_end,
- int *repeat)
+ int *repeat, u8 *uniform)
{
int i;
u64 base, mask;
u8 prev_match, curr_match;
*repeat = 0;
+ *uniform = 1;
/* Make end inclusive instead of exclusive */
end--;
@@ -214,6 +219,7 @@ static u8 mtrr_type_lookup_variable(u64 start, u64 end, u64 *partial_end,
end = *partial_end - 1; /* end is inclusive */
*repeat = 1;
+ *uniform = 0;
}
if ((start & mask) != (base & mask))
@@ -225,6 +231,7 @@ static u8 mtrr_type_lookup_variable(u64 start, u64 end, u64 *partial_end,
continue;
}
+ *uniform = 0;
if (check_type_overlap(&prev_match, &curr_match))
return curr_match;
}
@@ -241,10 +248,15 @@ static u8 mtrr_type_lookup_variable(u64 start, u64 end, u64 *partial_end,
* Return Values:
* MTRR_TYPE_(type) - The effective MTRR type for the region
* MTRR_TYPE_INVALID - MTRR is disabled
+ *
+ * Output Argument:
+ * uniform - Set to 1 when an MTRR covers the region uniformly, i.e. the
+ * region is fully covered by a single MTRR entry or the default
+ * type.
*/
-u8 mtrr_type_lookup(u64 start, u64 end)
+u8 mtrr_type_lookup(u64 start, u64 end, u8 *uniform)
{
- u8 type, prev_type;
+ u8 type, prev_type, is_uniform = 1, dummy;
int repeat;
u64 partial_end;
@@ -260,14 +272,18 @@ u8 mtrr_type_lookup(u64 start, u64 end)
*/
if ((start < 0x100000) &&
(mtrr_state.have_fixed) &&
- (mtrr_state.enabled & MTRR_STATE_MTRR_FIXED_ENABLED))
- return mtrr_type_lookup_fixed(start, end);
+ (mtrr_state.enabled & MTRR_STATE_MTRR_FIXED_ENABLED)) {
+ is_uniform = 0;
+ type = mtrr_type_lookup_fixed(start, end);
+ goto out;
+ }
/*
* Look up the variable ranges. Look of multiple ranges matching
* this address and pick type as per MTRR precedence.
*/
- type = mtrr_type_lookup_variable(start, end, &partial_end, &repeat);
+ type = mtrr_type_lookup_variable(start, end, &partial_end,
+ &repeat, &is_uniform);
/*
* Common path is with repeat = 0.
@@ -278,15 +294,19 @@ u8 mtrr_type_lookup(u64 start, u64 end)
while (repeat) {
prev_type = type;
start = partial_end;
- type = mtrr_type_lookup_variable(start, end, &partial_end, &repeat);
+ is_uniform = 0;
+ type = mtrr_type_lookup_variable(start, end, &partial_end,
+ &repeat, &dummy);
if (check_type_overlap(&prev_type, &type))
- return type;
+ goto out;
}
if (mtrr_tom2 && (start >= (1ULL<<32)) && (end < mtrr_tom2))
- return MTRR_TYPE_WRBACK;
+ type = MTRR_TYPE_WRBACK;
+out:
+ *uniform = is_uniform;
return type;
}
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 35af6771a95a..372ad422c2c3 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -267,9 +267,9 @@ static unsigned long pat_x_mtrr_type(u64 start, u64 end,
* request is for WB.
*/
if (req_type == _PAGE_CACHE_MODE_WB) {
- u8 mtrr_type;
+ u8 mtrr_type, uniform;
- mtrr_type = mtrr_type_lookup(start, end);
+ mtrr_type = mtrr_type_lookup(start, end, &uniform);
if (mtrr_type != MTRR_TYPE_WRBACK)
return _PAGE_CACHE_MODE_UC_MINUS;
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index c30f9819786b..fb0a9dd1d6e4 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -566,19 +566,28 @@ void native_set_fixmap(enum fixed_addresses idx, phys_addr_t phys,
/**
* pud_set_huge - setup kernel PUD mapping
*
- * MTRR can override PAT memory types with 4KiB granularity. Therefore,
- * this function does not set up a huge page when the range is covered
- * by a non-WB type of MTRR. MTRR_TYPE_INVALID indicates that MTRR are
- * disabled.
+ * MTRRs can override PAT memory types with 4KiB granularity. Therefore, this
+ * function sets up a huge page only if any of the following conditions are met:
+ *
+ * - MTRRs are disabled, or
+ *
+ * - MTRRs are enabled and the range is completely covered by a single MTRR, or
+ *
+ * - MTRRs are enabled and the corresponding MTRR memory type is WB, which
+ * has no effect on the requested PAT memory type.
+ *
+ * Callers should try to decrease page size (1GB -> 2MB -> 4K) if the bigger
+ * page mapping attempt fails.
*
* Returns 1 on success and 0 on failure.
*/
int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
{
- u8 mtrr;
+ u8 mtrr, uniform;
- mtrr = mtrr_type_lookup(addr, addr + PUD_SIZE);
- if ((mtrr != MTRR_TYPE_WRBACK) && (mtrr != MTRR_TYPE_INVALID))
+ mtrr = mtrr_type_lookup(addr, addr + PUD_SIZE, &uniform);
+ if ((mtrr != MTRR_TYPE_INVALID) && (!uniform) &&
+ (mtrr != MTRR_TYPE_WRBACK))
return 0;
prot = pgprot_4k_2_large(prot);
@@ -593,20 +602,21 @@ int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
/**
* pmd_set_huge - setup kernel PMD mapping
*
- * MTRR can override PAT memory types with 4KiB granularity. Therefore,
- * this function does not set up a huge page when the range is covered
- * by a non-WB type of MTRR. MTRR_TYPE_INVALID indicates that MTRR are
- * disabled.
+ * See text over pud_set_huge() above.
*
* Returns 1 on success and 0 on failure.
*/
int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
{
- u8 mtrr;
+ u8 mtrr, uniform;
- mtrr = mtrr_type_lookup(addr, addr + PMD_SIZE);
- if ((mtrr != MTRR_TYPE_WRBACK) && (mtrr != MTRR_TYPE_INVALID))
+ mtrr = mtrr_type_lookup(addr, addr + PMD_SIZE, &uniform);
+ if ((mtrr != MTRR_TYPE_INVALID) && (!uniform) &&
+ (mtrr != MTRR_TYPE_WRBACK)) {
+ pr_warn_once("%s: Cannot satisfy [mem %#010llx-%#010llx] with a huge-page mapping due to MTRR override.\n",
+ __func__, addr, addr + PMD_SIZE);
return 0;
+ }
prot = pgprot_4k_2_large(prot);
--
1.9.0.258.g00eda23
next prev parent reply other threads:[~2015-05-26 8:30 UTC|newest]
Thread overview: 400+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-26 8:28 [PATCH 00/18] tip queue 2015-05-26 Borislav Petkov
2015-05-26 8:28 ` [PATCH 01/18] x86/kconfig: Simplify conditions for HAVE_ARCH_HUGE_VMAP Borislav Petkov
2015-05-27 14:17 ` [tip:x86/mm] x86/mm/kconfig: " tip-bot for Toshi Kani
2015-05-26 8:28 ` [PATCH 02/18] x86/mtrr: Fix MTRR lookup to handle an inclusive entry Borislav Petkov
2015-05-27 14:18 ` [tip:x86/mm] x86/mm/mtrr: " tip-bot for Toshi Kani
2015-05-26 8:28 ` [PATCH 03/18] x86/mtrr: Fix MTRR state checks in mtrr_type_lookup() Borislav Petkov
2015-05-27 14:18 ` [tip:x86/mm] x86/mm/mtrr: " tip-bot for Toshi Kani
2015-05-26 8:28 ` [PATCH 04/18] x86/mtrr: Use symbolic define as a retval for disabled MTRRs Borislav Petkov
2015-05-27 14:18 ` [tip:x86/mm] x86/mm/mtrr: " tip-bot for Toshi Kani
2015-05-26 8:28 ` [PATCH 05/18] x86/mtrr: Clean up mtrr_type_lookup() Borislav Petkov
2015-05-27 14:19 ` [tip:x86/mm] x86/mm/mtrr: " tip-bot for Toshi Kani
2015-07-31 13:18 ` Peter Zijlstra
2015-07-31 14:44 ` Borislav Petkov
2015-07-31 15:08 ` Peter Zijlstra
2015-07-31 15:27 ` Borislav Petkov
2015-08-01 14:28 ` Luis R. Rodriguez
2015-08-01 16:33 ` Borislav Petkov
2015-08-01 16:39 ` Linus Torvalds
2015-08-01 16:49 ` Borislav Petkov
2015-08-01 17:03 ` Linus Torvalds
2015-05-26 8:28 ` [PATCH 06/18] x86/process: Drop repeated word from comment Borislav Petkov
2015-05-27 14:16 ` [tip:sched/core] sched/x86: Drop repeated word from mwait_idle() comment tip-bot for Huang Rui
2015-05-26 8:28 ` Borislav Petkov [this message]
2015-05-27 14:19 ` [tip:x86/mm] x86/mm/mtrr: Enhance MTRR checks in kernel mapping helpers tip-bot for Toshi Kani
2015-05-26 8:28 ` [PATCH 08/18] x86/mm/pat: Convert to pr_* usage Borislav Petkov
2015-05-27 14:19 ` [tip:x86/mm] x86/mm/pat: Convert to pr_*() usage tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 09/18] x86: Document Write Combining MTRR type effects on PAT / non-PAT pages Borislav Petkov
2015-05-27 14:19 ` [tip:x86/mm] x86/mm/mtrr, pat: " tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 10/18] x86/mtrr: Avoid ifdeffery with phys_wc_to_mtrr_index() Borislav Petkov
2015-05-27 14:20 ` [tip:x86/mm] x86/mm/mtrr: Avoid #ifdeffery " tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 11/18] x86/mtrr: Generalize runtime disabling of MTRRs Borislav Petkov
2015-05-27 14:20 ` [tip:x86/mm] x86/mm/mtrr: " tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 12/18] x86/mm/pat: Wrap pat_enabled Borislav Petkov
2015-05-27 14:20 ` [tip:x86/mm] x86/mm/pat: Wrap pat_enabled into a function API tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 13/18] x86/mm/pat: Export pat_enabled() Borislav Petkov
2015-05-27 14:21 ` [tip:x86/mm] " tip-bot for Luis R. Rodriguez
2015-05-26 8:28 ` [PATCH 14/18] x86/cpu: Strip any /proc/cpuinfo model name field whitespace Borislav Petkov
2015-05-27 14:16 ` [tip:x86/cpu] x86/cpu: Strip any /proc/ cpuinfo " tip-bot for Prarit Bhargava
2015-05-27 17:07 ` Joe Perches
2015-05-27 19:06 ` Borislav Petkov
2015-05-27 19:16 ` Joe Perches
2015-05-28 11:27 ` Prarit Bhargava
2015-05-28 11:32 ` Borislav Petkov
2015-05-28 12:58 ` Borislav Petkov
2015-05-28 16:57 ` H. Peter Anvin
2015-05-28 18:33 ` Borislav Petkov
2015-05-28 20:39 ` H. Peter Anvin
2015-05-26 8:28 ` [PATCH 15/18] x86/documentation: Move kernel-stacks doc one level up Borislav Petkov
2015-05-27 14:17 ` [tip:x86/debug] x86/Documentation: " tip-bot for Borislav Petkov
2015-05-26 8:28 ` [PATCH 16/18] x86/documentation: Remove STACKFAULT_STACK bulletpoint Borislav Petkov
2015-05-27 14:17 ` [tip:x86/debug] x86/Documentation: " tip-bot for Borislav Petkov
2015-05-26 8:28 ` [PATCH 17/18] x86/documentation: Adapt Ingo's explanation on printing backtraces Borislav Petkov
2015-05-26 8:28 ` [PATCH 18/18] x86/mce: Fix monarch timeout setting through the mce= cmdline option Borislav Petkov
2015-06-07 17:39 ` [tip:x86/core] " tip-bot for Xie XiuQi
-- strict thread matches above, loose matches on Subject: below --
2015-05-20 11:22 [PATCH] mce: fix fail to set 'monarchtimeout' via boot option Xie XiuQi
2015-05-20 17:43 ` Borislav Petkov
2015-05-21 1:00 ` Xie XiuQi
2015-05-19 15:43 [PATCH] x86, cpuinfo x86_model_id whitespace cleanup Prarit Bhargava
2015-05-19 16:56 ` Borislav Petkov
2015-05-19 17:25 ` Brian Gerst
2015-05-19 18:13 ` Borislav Petkov
2015-05-19 18:44 ` Andy Lutomirski
2015-05-19 19:22 ` Borislav Petkov
2015-05-19 20:16 ` Andy Lutomirski
2015-05-19 20:26 ` Joe Perches
2015-05-19 20:28 ` Joe Perches
2015-05-19 20:31 ` Borislav Petkov
2015-05-19 22:17 ` Prarit Bhargava
2015-05-27 17:18 ` H. Peter Anvin
2015-05-20 6:34 ` Ingo Molnar
2015-05-20 10:15 ` Prarit Bhargava
2015-06-02 8:42 ` [tip:x86/cpu] x86/cpu: Trim model ID whitespace tip-bot for Borislav Petkov
2015-05-19 8:01 [RFC PATCH 0/4] x86, mwaitt: introduce AMD mwaitt support Huang Rui
2015-05-19 8:01 ` [RFC PATCH 1/4] x86, mwaitt: add monitorx and mwaitx instruction Huang Rui
2015-05-19 11:29 ` Borislav Petkov
2015-05-21 8:54 ` Huang Rui
2015-05-21 9:35 ` Borislav Petkov
2015-05-19 8:01 ` [RFC PATCH 2/4] x86, mwaitt: introduce mwaitx idle with a configurable timer Huang Rui
2015-05-19 11:31 ` Borislav Petkov
2015-05-20 8:55 ` Ingo Molnar
2015-05-20 9:12 ` Borislav Petkov
2015-05-20 10:22 ` Ingo Molnar
2015-05-20 10:50 ` Borislav Petkov
2015-05-20 11:11 ` Ingo Molnar
2015-05-20 11:21 ` Borislav Petkov
2015-05-20 11:41 ` Ingo Molnar
2015-05-20 13:20 ` Thomas Gleixner
2015-05-20 14:51 ` Ingo Molnar
2015-05-20 15:55 ` One Thousand Gnomes
2015-05-20 16:07 ` Borislav Petkov
2015-05-20 19:12 ` Thomas Gleixner
2015-05-20 20:15 ` Borislav Petkov
2015-05-21 14:56 ` Huang Rui
2015-05-21 16:02 ` Borislav Petkov
2015-05-21 16:45 ` Andy Lutomirski
2015-05-21 17:08 ` Borislav Petkov
2015-05-21 17:12 ` Andy Lutomirski
2015-05-21 19:30 ` Thomas Gleixner
2015-05-21 14:32 ` Huang Rui
2015-05-25 2:42 ` Huang Rui
2015-05-25 10:43 ` Ingo Molnar
2015-05-21 14:15 ` Huang Rui
2015-05-21 13:26 ` Huang Rui
2015-05-21 1:34 ` Andy Lutomirski
2015-05-21 5:48 ` Andy Lutomirski
2015-05-27 1:01 ` Andy Lutomirski
2015-05-27 11:30 ` Borislav Petkov
2015-05-21 9:41 ` Thomas Gleixner
2015-05-19 8:01 ` [RFC PATCH 3/4] x86, mwaitt: add document to describe mwaitx Huang Rui
2015-05-19 8:01 ` [RFC PATCH 4/4] x86, mwait: fix redundant comment Huang Rui
2015-05-19 9:40 ` Borislav Petkov
2015-05-19 8:57 ` [RFC PATCH 0/4] x86, mwaitt: introduce AMD mwaitt support Borislav Petkov
2015-05-19 9:44 ` Huang Rui
2015-05-18 16:34 [PATCH v4 0/3] Compile-time stack frame pointer validation Josh Poimboeuf
2015-05-18 16:34 ` [PATCH v4 1/3] x86, stackvalidate: " Josh Poimboeuf
2015-05-18 16:34 ` [PATCH v4 2/3] x86: Make push/pop CFI macros arch-independent Josh Poimboeuf
2015-05-18 16:34 ` [PATCH v4 3/3] x86, stackvalidate: Add asm frame pointer setup macros Josh Poimboeuf
2015-05-20 10:33 ` [PATCH v4 0/3] Compile-time stack frame pointer validation Ingo Molnar
2015-05-20 14:13 ` Josh Poimboeuf
2015-05-20 14:48 ` Ingo Molnar
2015-05-20 15:51 ` Josh Poimboeuf
2015-05-20 16:09 ` Josh Poimboeuf
2015-05-20 16:03 ` Andy Lutomirski
2015-05-20 16:25 ` Josh Poimboeuf
2015-05-20 16:39 ` Andy Lutomirski
2015-05-20 16:52 ` Borislav Petkov
2015-05-21 10:16 ` Ingo Molnar
2015-05-21 10:47 ` Borislav Petkov
2015-05-21 11:11 ` Ingo Molnar
2015-05-21 15:49 ` [PATCH 1/3] x86/documentation: Move kernel-stacks doc one level up Borislav Petkov
2015-05-21 15:49 ` [PATCH 2/3] x86/documentation: Remove STACKFAULT_STACK bulletpoint Borislav Petkov
2015-05-21 15:49 ` [PATCH 3/3] x86/documentation: Adapt Ingo's explanation on printing backtraces Borislav Petkov
2015-05-27 14:17 ` [tip:x86/debug] x86/Documentation: Adapt Ingo' s " tip-bot for Borislav Petkov
2015-05-20 16:59 ` [PATCH v4 0/3] Compile-time stack frame pointer validation Linus Torvalds
2015-05-20 17:20 ` Josh Poimboeuf
2015-05-21 10:27 ` Ingo Molnar
2015-05-21 7:52 ` Ingo Molnar
2015-05-21 12:12 ` Ingo Molnar
2015-05-26 23:06 ` Andi Kleen
2015-05-20 17:27 ` Peter Zijlstra
2015-05-20 19:10 ` Jiri Kosina
2015-05-21 20:54 ` Josh Poimboeuf
2015-05-21 21:53 ` Andy Lutomirski
2015-05-22 14:53 ` Josh Poimboeuf
2015-05-21 22:01 ` Borislav Petkov
2015-05-22 14:32 ` Josh Poimboeuf
2015-05-22 21:18 ` Jiri Kosina
2015-05-22 22:22 ` Josh Poimboeuf
2015-05-23 8:37 ` Borislav Petkov
2015-05-15 18:23 [PATCH v5 0/6] mtrr, mm, x86: Enhance MTRR checks for huge I/O mapping Toshi Kani
2015-05-15 18:23 ` [PATCH v5 1/6] mm, x86: Simplify conditions of HAVE_ARCH_HUGE_VMAP Toshi Kani
2015-05-17 8:30 ` Borislav Petkov
2015-05-15 18:23 ` [PATCH v5 2/6] mtrr, x86: Fix MTRR lookup to handle inclusive entry Toshi Kani
2015-05-15 18:23 ` [PATCH v5 3/6] mtrr, x86: Fix MTRR state checks in mtrr_type_lookup() Toshi Kani
2015-05-15 18:23 ` [PATCH v5 4/6] mtrr, x86: Define MTRR_TYPE_INVALID for mtrr_type_lookup() Toshi Kani
2015-05-15 18:23 ` [PATCH v5 5/6] mtrr, x86: Clean up mtrr_type_lookup() Toshi Kani
2015-05-15 18:23 ` [PATCH v5 6/6] mtrr, mm, x86: Enhance MTRR checks for KVA huge page mapping Toshi Kani
2015-05-18 13:33 ` Borislav Petkov
2015-05-18 17:22 ` Toshi Kani
2015-05-18 19:01 ` Borislav Petkov
2015-05-18 19:31 ` Toshi Kani
2015-05-18 20:01 ` Borislav Petkov
2015-05-18 20:21 ` Toshi Kani
2015-05-18 20:51 ` Borislav Petkov
2015-05-18 21:53 ` Toshi Kani
2015-05-19 11:44 ` Borislav Petkov
2015-05-19 13:23 ` Borislav Petkov
2015-05-19 13:47 ` Toshi Kani
2015-05-20 11:55 ` Ingo Molnar
2015-05-20 14:34 ` Toshi Kani
2015-05-20 15:01 ` Ingo Molnar
2015-05-20 15:02 ` Toshi Kani
2015-05-20 16:04 ` Borislav Petkov
2015-05-20 15:46 ` Toshi Kani
2015-05-11 8:15 [0/8] tip queue 2015-05-11 Borislav Petkov
2015-05-11 8:15 ` [PATCH] x86/alternatives: Switch AMD F15h and later to the P6 NOPs Borislav Petkov
2015-05-11 12:44 ` [tip:x86/asm] " tip-bot for Borislav Petkov
2015-05-11 8:15 ` [PATCH] x86/cpu/microcode: Zap changelog Borislav Petkov
2015-05-11 12:45 ` [tip:x86/microcode] " tip-bot for Borislav Petkov
2015-05-11 8:15 ` [PATCH] x86/kaslr: Fix typo in KASLR_FLAG documentation Borislav Petkov
2015-05-11 12:45 ` [tip:x86/boot] x86/kaslr: Fix typo in the " tip-bot for Miroslav Benes
2015-05-11 8:15 ` [PATCH 1/5] x86/mm: Do not flush last cacheline twice in clflush_cache_range() Borislav Petkov
2015-05-11 12:45 ` [tip:x86/mm] " tip-bot for Ross Zwisler
2015-05-11 8:15 ` [PATCH] x86/vdso: Add arch/x86/include/uapi include path to HOST_EXTRACFLAGS Borislav Petkov
2015-05-11 8:15 ` [PATCH 2/5] x86/mm: Add kerneldoc comments for pcommit_sfence() Borislav Petkov
2015-05-11 12:45 ` [tip:x86/mm] " tip-bot for Ross Zwisler
2015-05-11 8:15 ` [PATCH 3/5] x86/MTRR: Remove wrong address check in __mtrr_type_lookup() Borislav Petkov
2015-05-11 12:46 ` [tip:x86/mm] x86/mm/mtrr: Remove incorrect " tip-bot for Toshi Kani
2015-05-11 8:15 ` [PATCH 4/5] x86/mm: Add ioremap_uc() helper to map memory uncacheable (not UC-) Borislav Petkov
2015-05-11 12:46 ` [tip:x86/mm] " tip-bot for Luis R. Rodriguez
2015-05-06 16:54 tools: Consolidate types.h Oleg Nesterov
2015-05-06 17:17 ` Borislav Petkov
2015-05-06 17:30 ` Oleg Nesterov
2015-05-06 17:37 ` Borislav Petkov
2015-05-07 2:53 ` Andy Lutomirski
2015-05-07 16:58 ` [PATCH 0/1] x86/vdso: add -Iarch/x86/include/uapi into HOST_EXTRACFLAGS Oleg Nesterov
2015-05-07 16:58 ` [PATCH 1/1] " Oleg Nesterov
2015-05-07 19:46 ` Andy Lutomirski
2015-05-07 21:55 ` Borislav Petkov
2015-05-11 12:44 ` [tip:x86/urgent] x86/vdso: Fix 'make bzImage' on older distros tip-bot for Oleg Nesterov
2015-04-30 20:25 [PATCH v5 0/6] x86: address drivers that do not work with PAT Luis R. Rodriguez
2015-04-30 20:25 ` [PATCH v5 1/6] x86/mm/pat: use pr_info() and friends Luis R. Rodriguez
2015-05-04 14:58 ` Borislav Petkov
2015-05-07 3:36 ` Elliott, Robert (Server Storage)
2015-05-14 15:55 ` Luis R. Rodriguez
2015-04-30 20:25 ` [PATCH v5 2/6] x86/mm/pat: redefine pat_enabled Luis R. Rodriguez
2015-05-04 15:22 ` Borislav Petkov
2015-05-05 0:42 ` Luis R. Rodriguez
2015-04-30 20:25 ` [PATCH v5 3/6] arch/x86/mm/pat: export pat_enabled() Luis R. Rodriguez
2015-05-04 15:29 ` Borislav Petkov
2015-04-30 20:25 ` [PATCH v5 4/6] ivtv: use arch_phys_wc_add() and require PAT disabled Luis R. Rodriguez
2015-04-30 20:25 ` [PATCH v5 5/6] IB/ipath: add counting for MTRR Luis R. Rodriguez
2015-04-30 20:25 ` [PATCH v5 6/6] IB/ipath: use arch_phys_wc_add() and require PAT disabled Luis R. Rodriguez
2015-04-29 21:44 [PATCH v4 0/6] x86: document and address MTRR corner cases Luis R. Rodriguez
2015-04-29 21:44 ` [PATCH v4 1/6] x86: add ioremap_uc() - force strong UC, PCD=1, PWT=1 Luis R. Rodriguez
2015-04-30 10:18 ` Borislav Petkov
2015-04-29 21:44 ` [PATCH v4 2/6] x86: document WC MTRR effects on PAT / non-PAT pages Luis R. Rodriguez
2015-04-30 22:01 ` Randy Dunlap
2015-05-05 0:45 ` Luis R. Rodriguez
2015-05-05 7:22 ` Borislav Petkov
2015-05-05 7:46 ` Luis R. Rodriguez
2015-05-05 7:53 ` Borislav Petkov
2015-05-05 7:31 ` Luis R. Rodriguez
2015-05-04 12:23 ` Borislav Petkov
2015-05-05 7:35 ` Luis R. Rodriguez
2015-04-29 21:44 ` [PATCH v4 3/6] video: fbdev: atyfb: move framebuffer length fudging to helper Luis R. Rodriguez
2015-04-29 21:44 ` [PATCH v4 4/6] video: fbdev: atyfb: clarify ioremap() base and length used Luis R. Rodriguez
2015-04-29 21:44 ` [PATCH v4 5/6] video: fbdev: atyfb: replace MTRR UC hole with strong UC Luis R. Rodriguez
2015-04-29 21:44 ` [PATCH v4 6/6] video: fbdev: atyfb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-05-20 19:53 ` Luis R. Rodriguez
2015-05-20 20:57 ` Luis R. Rodriguez
2015-06-03 23:50 ` [PATCH v4 0/6] x86: document and address MTRR corner cases Luis R. Rodriguez
2015-06-08 23:43 ` Luis R. Rodriguez
2015-06-16 19:31 ` Luis R. Rodriguez
2015-06-19 22:22 ` Luis R. Rodriguez
2015-06-25 1:24 ` Luis R. Rodriguez
2015-06-25 6:59 ` Ingo Molnar
2015-06-25 16:41 ` Luis R. Rodriguez
2015-04-28 22:46 [PATCH v2] x86: Add kerneldoc for pcommit_sfence() Ross Zwisler
2015-04-29 14:23 ` Borislav Petkov
2015-04-28 22:13 [PATCH] x86: improve algorithm in clflush_cache_range Ross Zwisler
2015-04-29 10:28 ` Borislav Petkov
2015-04-22 17:12 [PATCH v4] mtrr: avoid ifdef'ery with phys_wc_to_mtrr_index() Luis R. Rodriguez
2015-04-14 11:35 [PATCH] x86/kaslr: Fix typo in documentation Miroslav Benes
2015-04-14 11:37 ` Borislav Petkov
2015-03-24 22:08 [PATCH v4 0/7] mtrr, mm, x86: Enhance MTRR checks for huge I/O mapping Toshi Kani
2015-03-24 22:08 ` [PATCH v4 1/7] mm, x86: Document return values of mapping funcs Toshi Kani
2015-05-05 11:19 ` Borislav Petkov
2015-05-05 13:46 ` Toshi Kani
2015-05-05 14:19 ` Borislav Petkov
2015-05-05 14:14 ` Toshi Kani
2015-03-24 22:08 ` [PATCH v4 2/7] mtrr, x86: Fix MTRR lookup to handle inclusive entry Toshi Kani
2015-05-05 17:11 ` Borislav Petkov
2015-05-05 17:32 ` Toshi Kani
2015-05-05 18:39 ` Borislav Petkov
2015-05-05 19:31 ` Toshi Kani
2015-05-05 20:09 ` Borislav Petkov
2015-05-05 20:06 ` Toshi Kani
2015-03-24 22:08 ` [PATCH v4 3/7] mtrr, x86: Remove a wrong address check in __mtrr_type_lookup() Toshi Kani
2015-05-06 10:46 ` Borislav Petkov
2015-03-24 22:08 ` [PATCH v4 4/7] mtrr, x86: Fix MTRR state checks in mtrr_type_lookup() Toshi Kani
2015-05-06 11:47 ` Borislav Petkov
2015-05-06 15:23 ` Toshi Kani
2015-05-06 22:39 ` Borislav Petkov
2015-05-06 23:08 ` Toshi Kani
2015-03-24 22:08 ` [PATCH v4 5/7] mtrr, x86: Define MTRR_TYPE_INVALID for mtrr_type_lookup() Toshi Kani
2015-03-24 22:08 ` [PATCH v4 6/7] mtrr, x86: Clean up mtrr_type_lookup() Toshi Kani
2015-05-06 13:41 ` Borislav Petkov
2015-05-06 16:00 ` Toshi Kani
2015-05-06 22:49 ` Borislav Petkov
2015-05-06 23:42 ` Toshi Kani
2015-05-07 7:52 ` Borislav Petkov
2015-05-07 13:45 ` Toshi Kani
2015-03-24 22:08 ` [PATCH v4 7/7] mtrr, mm, x86: Enhance MTRR checks for KVA huge page mapping Toshi Kani
2015-05-09 9:08 ` Borislav Petkov
2015-05-11 19:25 ` Toshi Kani
2015-05-11 20:18 ` Borislav Petkov
2015-05-11 20:38 ` Toshi Kani
2015-05-11 21:42 ` Borislav Petkov
2015-05-11 22:09 ` Toshi Kani
2015-05-12 7:28 ` Borislav Petkov
2015-05-12 14:30 ` Toshi Kani
2015-05-12 16:31 ` Borislav Petkov
2015-05-12 16:57 ` Toshi Kani
2015-03-24 22:43 ` [PATCH v4 0/7] mtrr, mm, x86: Enhance MTRR checks for huge I/O mapping Andrew Morton
2015-04-03 6:33 ` Ingo Molnar
2015-04-03 15:22 ` Toshi Kani
2015-04-27 14:31 ` Toshi Kani
2015-03-20 23:17 [PATCH v1 00/47] mtrr/x86/drivers: bury MTRR Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 01/47] x86: mtrr: annotate mtrr_type_lookup() is only implemented on generic_mtrr_ops Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 02/47] x86: mtrr: generalize run time disabling of MTRR Luis R. Rodriguez
2015-03-25 19:59 ` Konrad Rzeszutek Wilk
2015-03-26 4:38 ` Juergen Gross
2015-03-26 23:35 ` Luis R. Rodriguez
2015-04-02 20:13 ` Bjorn Helgaas
2015-04-02 20:20 ` Luis R. Rodriguez
2015-04-02 20:28 ` Bjorn Helgaas
2015-04-02 21:02 ` Luis R. Rodriguez
2015-04-02 22:09 ` Bjorn Helgaas
2015-04-02 22:12 ` [Xen-devel] " Luis R. Rodriguez
2015-03-27 20:40 ` Toshi Kani
2015-03-27 23:56 ` Luis R. Rodriguez
2015-04-02 21:49 ` Luis R. Rodriguez
2015-04-02 23:52 ` Toshi Kani
2015-04-03 1:08 ` Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 03/47] devres: add devm_ioremap_wc() Luis R. Rodriguez
2015-03-20 23:49 ` Andy Lutomirski
2015-03-25 19:50 ` Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 04/47] pci: add pci_ioremap_wc_bar() Luis R. Rodriguez
2015-03-20 23:50 ` Andy Lutomirski
2015-03-25 20:06 ` Luis R. Rodriguez
2015-03-25 20:03 ` [Xen-devel] " Konrad Rzeszutek Wilk
2015-03-25 20:39 ` Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 05/47] pci: add pci_iomap_wc() variants Luis R. Rodriguez
2015-03-23 17:20 ` Bjorn Helgaas
2015-03-26 3:00 ` Luis R. Rodriguez
2015-04-21 17:52 ` Luis R. Rodriguez
2015-04-21 18:46 ` Michael S. Tsirkin
2015-03-27 19:18 ` Toshi Kani
2015-04-21 19:25 ` Michael S. Tsirkin
2015-04-21 19:27 ` Luis R. Rodriguez
2015-03-25 20:07 ` Konrad Rzeszutek Wilk
2015-03-27 18:40 ` Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 06/47] mtrr: add __arch_phys_wc_add() Luis R. Rodriguez
2015-03-20 23:48 ` Andy Lutomirski
2015-03-27 19:53 ` Luis R. Rodriguez
2015-03-27 19:58 ` Andy Lutomirski
2015-03-27 20:30 ` Luis R. Rodriguez
2015-03-27 21:23 ` Andy Lutomirski
2015-03-27 23:04 ` Luis R. Rodriguez
2015-03-27 23:10 ` Andy Lutomirski
2015-03-27 23:33 ` Luis R. Rodriguez
2015-04-02 20:21 ` Bjorn Helgaas
2015-04-02 20:55 ` Luis R. Rodriguez
2015-04-02 22:35 ` Bjorn Helgaas
2015-04-02 22:54 ` Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 07/47] video: fbdev: atyfb: move framebuffer length fudging to helper Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 08/47] video: fbdev: atyfb: clarify ioremap() base and length used Luis R. Rodriguez
2015-03-20 23:17 ` [PATCH v1 09/47] vidoe: fbdev: atyfb: remove and fix MTRR MMIO "hole" work around Luis R. Rodriguez
2015-03-20 23:52 ` Andy Lutomirski
2015-03-27 20:12 ` Luis R. Rodriguez
2015-03-27 21:21 ` Andy Lutomirski
2015-03-27 23:31 ` Luis R. Rodriguez
2015-03-21 9:15 ` Ville Syrjälä
2015-03-27 8:37 ` Ville Syrjälä
2015-03-27 19:38 ` Luis R. Rodriguez
2015-03-27 19:38 ` Luis R. Rodriguez
2015-03-27 19:43 ` Andy Lutomirski
2015-03-27 19:57 ` Luis R. Rodriguez
2015-03-27 21:56 ` Ville Syrjälä
2015-03-27 22:02 ` Andy Lutomirski
2015-03-28 0:28 ` Luis R. Rodriguez
2015-03-28 12:23 ` Ville Syrjälä
2015-04-01 23:52 ` Luis R. Rodriguez
2015-04-02 0:04 ` Andy Lutomirski
2015-04-02 19:45 ` Luis R. Rodriguez
2015-04-02 19:50 ` Andy Lutomirski
2015-03-28 0:21 ` Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 10/47] video: fbdev: atyfb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 11/47] IB/qib: add acounting for MTRR Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 12/47] IB/qib: use arch_phys_wc_add() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 13/47] IB/ipath: add counting for MTRR Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 14/47] IB/ipath: use __arch_phys_wc_add() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 15/47] [media] media: ivtv: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 16/47] fusion: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 17/47] video: fbdev: vesafb: only support MTRR_TYPE_WRCOMB Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 18/47] vidoe: fbdev: vesafb: add missing mtrr_del() for added MTRR Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 19/47] video: fbdev: vesafb: use arch_phys_wc_add() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 20/47] mtrr: avoid ifdef'ery with phys_wc_to_mtrr_index() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 21/47] ethernet: myri10ge: use arch_phys_wc_add() Luis R. Rodriguez
2015-03-21 7:08 ` Hyong-Youb Kim
2015-03-27 20:36 ` Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 22/47] staging: sm750fb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 23/47] staging: xgifb: " Luis R. Rodriguez
2015-04-30 17:40 ` Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 24/47] video: fbdev: arkfb: use arch_phys_wc_add() and pci_iomap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 25/47] video: fbdev: radeonfb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 26/47] video: fbdev: gbefb: add missing mtrr_del() calls Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 27/47] video: fbdev: gbefb: use arch_phys_wc_add() and devm_ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 28/47] video: fbdev: intelfb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 29/47] video: fbdev: matrox: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 30/47] video: fbdev: neofb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 31/47] video: fbdev: s3fb: use arch_phys_wc_add() and pci_iomap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 32/47] video: fbdev: nvidia: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 33/47] video: fbdev: savagefb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 34/47] video: fbdev: sisfb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 35/47] video: fbdev: aty: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 36/47] video: fbdev: i810: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 37/47] video: fbdev: i740fb: use arch_phys_wc_add() and pci_ioremap_wc_bar() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 38/47] video: fbdev: kyrofb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 39/47] video: fbdev: pm2fb: use arch_phys_wc_add() and ioremap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 40/47] video: fbdev: pm3fb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 41/47] video: fbdev: rivafb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 42/47] video: fbdev: tdfxfb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 43/47] video: fbdev: vt8623fb: use arch_phys_wc_add() and pci_iomap_wc() Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 44/47] video: fbdev: atmel_lcdfb: use ioremap_wc() for framebuffer Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 45/47] video: fbdev: geode gxfb: " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 46/47] video: fbdev: gxt4500: use pci_ioremap_wc_bar() " Luis R. Rodriguez
2015-03-20 23:18 ` [PATCH v1 47/47] mtrr: bury MTRR - unexport mtrr_add() and mtrr_del() Luis R. Rodriguez
2015-03-21 1:08 ` [PATCH v1 00/47] mtrr/x86/drivers: bury MTRR Andy Lutomirski
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