From: Huang Rui <ray.huang@amd.com>
To: Borislav Petkov <bp@suse.de>
Cc: Len Brown <lenb@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Thomas Gleixner <tglx@linutronix.de>, <x86@kernel.org>,
<linux-kernel@vger.kernel.org>,
Fengguang Wu <fengguang.wu@intel.com>,
"Aaron Lu" <aaron.lu@intel.com>, Tony Li <tony.li@amd.com>
Subject: Re: [RFC PATCH 2/4] x86, mwaitt: introduce mwaitx idle with a configurable timer
Date: Thu, 21 May 2015 21:26:50 +0800 [thread overview]
Message-ID: <20150521132650.GC20838@hr-slim.amd.com> (raw)
In-Reply-To: <20150519113121.GD4819@pd.tnic>
On Tue, May 19, 2015 at 01:31:21PM +0200, Borislav Petkov wrote:
> On Tue, May 19, 2015 at 04:01:10PM +0800, Huang Rui wrote:
> > MWAITX/MWAIT does not let the cpu core go into C1 state on AMD processors.
> > The cpu core still consumes less power while waiting, and has faster exit
> > from waiting than "Halt". This patch implements an interface using the
> > kernel parameter "idle=" to configure mwaitx type and timer value.
> >
> > If "idle=mwaitx", the timeout will be set as the maximum value
> > ((2^64 - 1) * TSC cycle).
> > If "idle=mwaitx,100", the timeout will be set as 100ns.
> > If the processor doesn't support MWAITX, then halt is used.
>
> Ok, I see what you're trying here and I think this is not the optimal
> approach.
>
> So let me explain how I see it, you correct me if I'm wrong:
>
> So we want to do MWAITX so that we can save us idle entry/exit overhead
> with HLT. Because MWAITX is faster, reportedly.
>
> Now, if we want to do that, we want to do it dynamically and adjust the
> MWAITX sleep interval depending on the system, usage pattern, system
> load and so on.
Yes, that's right. Maybe, even we can also find any other use case on
kernel other components.
>
> And for that we would need an adaptive scheme which approximates each
> idle interval. Simply taking TSC before we enter idle and after we come
> out would give us each idle residency duration and we can do some simple
> math to approximate it.
>
> Now, what would that bring us: faster wakeup times.
>
> And here comes the 10^6 $ question: why are we doing all the fun?
>
Do you mention the below codes:
/*
* TSC loops (EBX input) = Timer(nsec) *
* TSC freq(khz) / 1000000
*/
timeout = timeout * tsc_freq;
do_div(timeout, 1000000);
That's because the unit of tsc_freq is KHz and the unit of timeout is
nanosecond. Then I do div 10^6 to figure out the corresponding loops.
> I'm thinking we want to find a cutoff duration where for smaller
> durations it is worth to do MWAITX and have faster entry/exit times and
> for bigger durations we want to do HLT because it'll get into C1E and
> give us higher power savings.
>
> We don't want to do MWAITX too long because that'll burn more power
> relatively to HLT but we don't want to do HLT for shorter periods
> because then entry/exit costs.
>
> Am I on the right track at least?
Yes, that's totally right.
>
> > Signed-off-by: Huang Rui <ray.huang@amd.com>
> > ---
> > arch/x86/include/asm/mwait.h | 2 +
> > arch/x86/include/asm/processor.h | 2 +-
> > arch/x86/kernel/process.c | 79 ++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 82 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/x86/include/asm/mwait.h b/arch/x86/include/asm/mwait.h
> > index b91136f..c4e51e7 100644
> > --- a/arch/x86/include/asm/mwait.h
> > +++ b/arch/x86/include/asm/mwait.h
> > @@ -14,6 +14,8 @@
> > #define CPUID5_ECX_INTERRUPT_BREAK 0x2
> >
> > #define MWAIT_ECX_INTERRUPT_BREAK 0x1
> > +#define MWAITX_ECX_TIMER_ENABLE 0x2
>
> Use BIT(1) here.
OK.
>
> > +#define MWAITX_EBX_WAIT_TIMEOUT 0xffffffff
> >
> > static inline void __monitor(const void *eax, unsigned long ecx,
> > unsigned long edx)
> > diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
> > index 23ba676..0f60e94 100644
> > --- a/arch/x86/include/asm/processor.h
> > +++ b/arch/x86/include/asm/processor.h
> > @@ -733,7 +733,7 @@ extern unsigned long boot_option_idle_override;
> > extern bool amd_e400_c1e_detected;
> >
> > enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_NOMWAIT,
> > - IDLE_POLL};
> > + IDLE_POLL, IDLE_MWAITX};
> >
> > extern void enable_sep_cpu(void);
> > extern int sysenter_setup(void);
> > diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
> > index 6e338e3..9d68193 100644
> > --- a/arch/x86/kernel/process.c
> > +++ b/arch/x86/kernel/process.c
> > @@ -30,6 +30,7 @@
> > #include <asm/debugreg.h>
> > #include <asm/nmi.h>
> > #include <asm/tlbflush.h>
> > +#include <asm/x86_init.h>
> >
> > /*
> > * per-CPU TSS segments. Thre ads are completely 'soft' on Linux,
> > @@ -276,6 +277,7 @@ unsigned long boot_option_idle_override = IDLE_NO_OVERRIDE;
> > EXPORT_SYMBOL(boot_option_idle_override);
> >
> > static void (*x86_idle)(void);
> > +static unsigned long idle_param;
> >
> > #ifndef CONFIG_SMP
> > static inline void play_dead(void)
> > @@ -444,6 +446,17 @@ static int prefer_mwait_c1_over_halt(const struct cpuinfo_x86 *c)
> > return 1;
> > }
> >
> > +static int not_support_mwaitx(const struct cpuinfo_x86 *c)
> > +{
> > + if (c->x86_vendor != X86_VENDOR_AMD)
> > + return 1;
> > +
> > + if (!cpu_has(c, X86_FEATURE_MWAITT))
> > + return 1;
> > +
> > + return 0;
> > +}
> > +
> > /*
> > * MONITOR/MWAIT with no hints, used for default default C1 state.
> > * This invokes MWAIT with interrutps enabled and no flags,
> > @@ -470,12 +483,45 @@ static void mwait_idle(void)
> > __current_clr_polling();
> > }
> >
> > +/*
> > + * AMD Excavator processors support the new MONITORX/MWAITX instructions.
>
> No need for that especially when newer than XV processors start
> supporting those too.
>
OK, got it.
Thanks,
Rui
next prev parent reply other threads:[~2015-05-21 13:32 UTC|newest]
Thread overview: 400+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
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
-- strict thread matches above, loose matches on Subject: below --
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 ` [PATCH 07/18] x86/mm: Enhance MTRR checks in kernel mapping helpers Borislav Petkov
2015-05-27 14:19 ` [tip:x86/mm] x86/mm/mtrr: " 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
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
2015-05-18 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150521132650.GC20838@hr-slim.amd.com \
--to=ray.huang@amd.com \
--cc=aaron.lu@intel.com \
--cc=bp@suse.de \
--cc=fengguang.wu@intel.com \
--cc=lenb@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=tglx@linutronix.de \
--cc=tony.li@amd.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).