From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Cc: luto@amacapital.net, mingo@redhat.com, tglx@linutronix.de,
hpa@zytor.com, jgross@suse.com, JBeulich@suse.com, bp@suse.de,
suresh.b.siddha@intel.com, venkatesh.pallipadi@intel.com,
airlied@redhat.com, linux-kernel@vger.kernel.org,
linux-fbdev@vger.kernel.org, x86@kernel.org,
xen-devel@lists.xenproject.org,
"Luis R. Rodriguez" <mcgrof@suse.com>,
"Ingo Molnar" <mingo@elte.hu>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Antonino Daplas" <adaplas@gmail.com>,
"Jean-Christophe Plagniol-Villard" <plagnioj@jcrosoft.com>,
"Tomi Valkeinen" <tomi.valkeinen@ti.com>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Stefan Bader" <stefan.bader@canonical.com>,
ville.syrjala@linux.intel.com, david.vrabel@citrix.com,
toshi.kani@hp.com, bhelgaas@google.com,
"Roger Pau Monné" <roger.pau@citrix.com>,
xen-devel@lists.xensource.com
Subject: Re: [PATCH v1 02/47] x86: mtrr: generalize run time disabling of MTRR
Date: Wed, 25 Mar 2015 15:59:41 -0400 [thread overview]
Message-ID: <20150325195941.GM25884@l.oracle.com> (raw)
In-Reply-To: <1426893517-2511-3-git-send-email-mcgrof@do-not-panic.com>
On Fri, Mar 20, 2015 at 04:17:52PM -0700, Luis R. Rodriguez wrote:
> From: "Luis R. Rodriguez" <mcgrof@suse.com>
>
> It is possible to enable CONFIG_MTRR and up with it
> disabled at run time and yet CONFIG_X86_PAT continues
> to kick through fully functionally. This can happen
s/fully/full/ ?
> for instance on Xen where MTRR is not supported but
> PAT is, this can happen now on Linux as of commit
> 47591df50 by Juergen introduced as of v3.19.
s/3.19/4.0/
>
> Technically we should assume the proper CPU
> bits would be set to disable MTRR but we can't
> always rely on this. At least on the Xen Hypervisor
> for instance only X86_FEATURE_MTRR was disabled
> as of Xen 4.4 through Xen commit 586ab6a [0],
> but not X86_FEATURE_K6_MTRR, X86_FEATURE_CENTAUR_MCR,
> or X86_FEATURE_CYRIX_ARR for instance.
Oh, could you send an patch for that to Xen please?
>
> x86 mtrr code relies on quite a bit of checks for
> mtrr_if being set to check to see if MTRR did get
> set up, instead of using that lets provide a generic
> setter which when set we know MTRR is enabled. This
s/we know MTRR is enabled/will let us know that MTRR is enabled/
> also adds a few checks where they were not before
> which could potentially safeguard ourselves against
> incorrect usage of MTRR where this was not desirable.
>
> Where possible match error codes as if MTRR was
> disabled on arch/x86/include/asm/mtrr.h.
>
> Lastly, since disabling MTRR can happen at run time
> and we could end up with PAT enabled best record now
> on our logs when MTRR is disabled.
>
> [0] ~/devel/xen (git::stable-4.5)$ git describe --contains 586ab6a
> 4.4.0-rc1~18
>
> Cc: Andy Lutomirski <luto@amacapital.net>
> Cc: Suresh Siddha <suresh.b.siddha@intel.com>
> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
> Cc: Ingo Molnar <mingo@elte.hu>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Juergen Gross <jgross@suse.com>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Dave Airlie <airlied@redhat.com>
> Cc: Antonino Daplas <adaplas@gmail.com>
> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: venkatesh.pallipadi@intel.com
> Cc: Stefan Bader <stefan.bader@canonical.com>
> Cc: konrad.wilk@oracle.com
> Cc: ville.syrjala@linux.intel.com
> Cc: david.vrabel@citrix.com
> Cc: jbeulich@suse.com
> Cc: toshi.kani@hp.com
> Cc: bhelgaas@google.com
> Cc: Roger Pau Monné <roger.pau@citrix.com>
> Cc: linux-fbdev@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: xen-devel@lists.xensource.com
> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
> ---
> arch/x86/include/asm/mtrr.h | 2 ++
> arch/x86/kernel/cpu/mtrr/cleanup.c | 2 +-
> arch/x86/kernel/cpu/mtrr/generic.c | 5 +++--
> arch/x86/kernel/cpu/mtrr/if.c | 3 +++
> arch/x86/kernel/cpu/mtrr/main.c | 31 ++++++++++++++++++++++---------
> 5 files changed, 31 insertions(+), 12 deletions(-)
>
> diff --git a/arch/x86/include/asm/mtrr.h b/arch/x86/include/asm/mtrr.h
> index f768f62..cade917 100644
> --- a/arch/x86/include/asm/mtrr.h
> +++ b/arch/x86/include/asm/mtrr.h
> @@ -31,6 +31,7 @@
> * arch_phys_wc_add and arch_phys_wc_del.
> */
> # ifdef CONFIG_MTRR
> +extern int mtrr_enabled;
> extern u8 mtrr_type_lookup(u64 addr, u64 end);
> extern void mtrr_save_fixed_ranges(void *);
> extern void mtrr_save_state(void);
> @@ -50,6 +51,7 @@ 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 const int mtrr_enabled;
> static inline u8 mtrr_type_lookup(u64 addr, u64 end)
> {
> /*
> diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
> index 5f90b85..784dc55 100644
> --- a/arch/x86/kernel/cpu/mtrr/cleanup.c
> +++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
> @@ -880,7 +880,7 @@ int __init mtrr_trim_uncached_memory(unsigned long end_pfn)
> * Make sure we only trim uncachable memory on machines that
> * support the Intel MTRR architecture:
> */
> - if (!is_cpu(INTEL) || disable_mtrr_trim)
> + if (!is_cpu(INTEL) || disable_mtrr_trim || !mtrr_enabled)
> return 0;
>
> rdmsr(MSR_MTRRdefType, def, dummy);
> diff --git a/arch/x86/kernel/cpu/mtrr/generic.c b/arch/x86/kernel/cpu/mtrr/generic.c
> index 09c82de..df321b2 100644
> --- a/arch/x86/kernel/cpu/mtrr/generic.c
> +++ b/arch/x86/kernel/cpu/mtrr/generic.c
> @@ -116,7 +116,8 @@ static u8 __mtrr_type_lookup(u64 start, u64 end, u64 *partial_end, int *repeat)
> u8 prev_match, curr_match;
>
> *repeat = 0;
> - if (!mtrr_state_set)
> + /* generic_mtrr_ops is only set for generic_mtrr_ops */
> + if (!mtrr_state_set || !mtrr_enabled)
> return 0xFF;
>
> if (!mtrr_state.enabled)
> @@ -290,7 +291,7 @@ static void get_fixed_ranges(mtrr_type *frs)
>
> void mtrr_save_fixed_ranges(void *info)
> {
> - if (cpu_has_mtrr)
> + if (mtrr_enabled && cpu_has_mtrr)
> get_fixed_ranges(mtrr_state.fixed_ranges);
> }
>
> diff --git a/arch/x86/kernel/cpu/mtrr/if.c b/arch/x86/kernel/cpu/mtrr/if.c
> index d76f13d..e9e001a 100644
> --- a/arch/x86/kernel/cpu/mtrr/if.c
> +++ b/arch/x86/kernel/cpu/mtrr/if.c
> @@ -436,6 +436,9 @@ static int __init mtrr_if_init(void)
> {
> struct cpuinfo_x86 *c = &boot_cpu_data;
>
> + if (!mtrr_enabled)
> + return 0;
> +
> if ((!cpu_has(c, X86_FEATURE_MTRR)) &&
> (!cpu_has(c, X86_FEATURE_K6_MTRR)) &&
> (!cpu_has(c, X86_FEATURE_CYRIX_ARR)) &&
> diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
> index ea5f363..7db9c47 100644
> --- a/arch/x86/kernel/cpu/mtrr/main.c
> +++ b/arch/x86/kernel/cpu/mtrr/main.c
> @@ -59,6 +59,7 @@
> #define MTRR_TO_PHYS_WC_OFFSET 1000
>
> u32 num_var_ranges;
> +int mtrr_enabled;
>
> unsigned int mtrr_usage_table[MTRR_MAX_VAR_RANGES];
> static DEFINE_MUTEX(mtrr_mutex);
> @@ -84,6 +85,9 @@ static int have_wrcomb(void)
> {
> struct pci_dev *dev;
>
> + if (!mtrr_enabled)
> + return 0;
> +
> dev = pci_get_class(PCI_CLASS_BRIDGE_HOST << 8, NULL);
> if (dev != NULL) {
> /*
> @@ -286,7 +290,7 @@ int mtrr_add_page(unsigned long base, unsigned long size,
> int i, replace, error;
> mtrr_type ltype;
>
> - if (!mtrr_if)
> + if (!mtrr_enabled)
> return -ENXIO;
>
> error = mtrr_if->validate_add_page(base, size, type);
> @@ -388,6 +392,8 @@ int mtrr_add_page(unsigned long base, unsigned long size,
>
> static int mtrr_check(unsigned long base, unsigned long size)
> {
> + if (!mtrr_enabled)
> + return -ENODEV;
> if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
> pr_warning("mtrr: size and base must be multiples of 4 kiB\n");
> pr_debug("mtrr: size: 0x%lx base: 0x%lx\n", size, base);
> @@ -463,8 +469,8 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
> unsigned long lbase, lsize;
> int error = -EINVAL;
>
> - if (!mtrr_if)
> - return -ENXIO;
> + if (!mtrr_enabled)
> + return -ENODEV;
>
> max = num_var_ranges;
> /* No CPU hotplug when we change MTRR entries */
> @@ -523,6 +529,8 @@ int mtrr_del_page(int reg, unsigned long base, unsigned long size)
> */
> int mtrr_del(int reg, unsigned long base, unsigned long size)
> {
> + if (!mtrr_enabled)
> + return -ENODEV;
> if (mtrr_check(base, size))
> return -EINVAL;
> return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
> @@ -545,7 +553,7 @@ int arch_phys_wc_add(unsigned long base, unsigned long size)
> {
> int ret;
>
> - if (pat_enabled)
> + if (pat_enabled || !mtrr_enabled)
> return 0; /* Success! (We don't need to do anything.) */
>
> ret = mtrr_add(base, size, MTRR_TYPE_WRCOMB, true);
> @@ -734,6 +742,7 @@ void __init mtrr_bp_init(void)
> }
>
> if (mtrr_if) {
> + mtrr_enabled = true;
> set_num_var_ranges();
> init_table();
> if (use_intel()) {
> @@ -744,12 +753,13 @@ void __init mtrr_bp_init(void)
> mtrr_if->set_all();
> }
> }
> - }
> + } else
> + pr_info("mtrr: system does not support MTRR\n");
'pr_warn' ?
> }
>
> void mtrr_ap_init(void)
> {
> - if (!use_intel() || mtrr_aps_delayed_init)
> + if (!use_intel() || mtrr_aps_delayed_init || !mtrr_enabled)
> return;
> /*
> * Ideally we should hold mtrr_mutex here to avoid mtrr entries
> @@ -774,6 +784,9 @@ void mtrr_save_state(void)
> {
> int first_cpu;
>
> + if (!mtrr_enabled)
> + return;
> +
> get_online_cpus();
> first_cpu = cpumask_first(cpu_online_mask);
> smp_call_function_single(first_cpu, mtrr_save_fixed_ranges, NULL, 1);
> @@ -782,7 +795,7 @@ void mtrr_save_state(void)
>
> void set_mtrr_aps_delayed_init(void)
> {
> - if (!use_intel())
> + if (!use_intel() || !mtrr_enabled)
> return;
>
> mtrr_aps_delayed_init = true;
> @@ -810,7 +823,7 @@ void mtrr_aps_init(void)
>
> void mtrr_bp_restore(void)
> {
> - if (!use_intel())
> + if (!use_intel() || !mtrr_enabled)
> return;
>
> mtrr_if->set_all();
> @@ -818,7 +831,7 @@ void mtrr_bp_restore(void)
>
> static int __init mtrr_init_finialize(void)
> {
> - if (!mtrr_if)
> + if (!mtrr_enabled)
> return 0;
>
> if (use_intel()) {
> --
> 2.3.2.209.gd67f9d5.dirty
>
next prev parent reply other threads:[~2015-03-25 20:03 UTC|newest]
Thread overview: 400+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
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
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
2015-04-14 11:35 [PATCH] x86/kaslr: Fix typo in documentation Miroslav Benes
2015-04-14 11:37 ` Borislav Petkov
2015-04-22 17:12 [PATCH v4] mtrr: avoid ifdef'ery with phys_wc_to_mtrr_index() Luis R. Rodriguez
2015-04-28 22:13 [PATCH] x86: improve algorithm in clflush_cache_range Ross Zwisler
2015-04-29 10:28 ` Borislav Petkov
2015-04-28 22:46 [PATCH v2] x86: Add kerneldoc for pcommit_sfence() Ross Zwisler
2015-04-29 14:23 ` Borislav Petkov
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
2015-04-30 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
2015-05-06 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
2015-05-11 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
2015-05-15 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
2015-05-18 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
2015-05-19 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
2015-05-19 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
2015-05-20 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
2015-05-26 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
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