On Sat, Dec 22, 2018 at 08:37:28PM +0100, christophe leroy wrote:
> Le 22/12/2018 à 18:16, Segher Boessenkool a écrit :
> >On Sat, Dec 22, 2018 at 02:08:02PM +0100, christophe leroy wrote:
> >>
> >>Usually, Guarded implies no exec (at least on 6xx and 8xx).
> >
> >Huh? What do you mean here?
>
>
On Sat, 2018-12-22 at 11:50 +0100, christophe leroy wrote:
> Hi Scott,
>
> Le 22/12/2018 à 05:42, Scott Wood a écrit :
> > Christophe Leroy (1):
> >powerpc/83xx: handle machine check caused by watchdog timer
>
> kbuild robot reported a build failure, most likely due to missing
> asm/debu
Le 22/12/2018 à 18:16, Segher Boessenkool a écrit :
On Sat, Dec 22, 2018 at 02:08:02PM +0100, christophe leroy wrote:
Usually, Guarded implies no exec (at least on 6xx and 8xx).
Huh? What do you mean here?
From the 885 Reference Manual:
Address translation: the EA is translated by usi
On Sat, Dec 22, 2018 at 02:08:02PM +0100, christophe leroy wrote:
>
> Usually, Guarded implies no exec (at least on 6xx and 8xx).
Huh? What do you mean here?
Segher
Le 22/12/2018 à 15:35, Christian Lamparter a écrit :
This patch fixes a recent compilation regression in ocm:
| ocm.c: In function ‘ocm_init_node’:
| ocm.c:182:18: error: invalid operands to binary |
| (have ‘int’ and ‘pgprot_t’ {aka ‘struct ’})
| _PAGE_EXEC | PAGE_KERNEL_NCG);
|
This patch fixes a recent compilation regression in ocm:
| ocm.c: In function ‘ocm_init_node’:
| ocm.c:182:18: error: invalid operands to binary |
| (have ‘int’ and ‘pgprot_t’ {aka ‘struct ’})
| _PAGE_EXEC | PAGE_KERNEL_NCG);
| ^
|
| ocm.c:197:17: error: invalid operan
On Saturday, December 22, 2018 2:08:02 PM CET christophe leroy wrote:
>
> Le 22/12/2018 à 12:27, Christian Lamparter a écrit :
> > On Saturday, December 22, 2018 11:59:04 AM CET christophe leroy wrote:
> >>
> >> Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
> >>> This patch fixes a recent r
Le 22/12/2018 à 12:27, Christian Lamparter a écrit :
On Saturday, December 22, 2018 11:59:04 AM CET christophe leroy wrote:
Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
This patch fixes a recent regression in ocm:
ocm.c: In function ‘ocm_init_node’:
ocm.c:182:18: error: invalid ope
On Sat, 22 Dec 2018 20:51:21 +1100
Michael Ellerman wrote:
> I did test the previous series you posted and I think everything was OK
> running the ftracetest suite (I got one or two fails but I think that
> was because of missing CONFIG options).
>
> Acked-by: Michael Ellerman (powerpc)
Thank
On Saturday, December 22, 2018 11:59:04 AM CET christophe leroy wrote:
>
> Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
> > This patch fixes a recent regression in ocm:
> >
> > ocm.c: In function ‘ocm_init_node’:
> > ocm.c:182:18: error: invalid operands to binary |
> > ocm.c:197:17: erro
Hi Scott,
Le 22/12/2018 à 05:42, Scott Wood a écrit :
Highlights include elimination of legacy clock bindings use from dts
files, an 83xx watchdog handler, fixes to old dts interrupt errors, and
some minor cleanup.
The following changes since commit 8c6c942d33f2a79439e86f8f406afae40a5bc767:
Le 22/12/2018 à 11:09, Christian Lamparter a écrit :
This patch fixes a recent regression in ocm:
ocm.c: In function ‘ocm_init_node’:
ocm.c:182:18: error: invalid operands to binary |
ocm.c:197:17: error: invalid operands to binary |
Fixes: 56f3c1413f5c ("powerpc/mm: properly set PAGE_KERNEL
This patch fixes a recent regression in ocm:
ocm.c: In function ‘ocm_init_node’:
ocm.c:182:18: error: invalid operands to binary |
ocm.c:197:17: error: invalid operands to binary |
Fixes: 56f3c1413f5c ("powerpc/mm: properly set PAGE_KERNEL flags in ioremap()")
Signed-off-by: Christian Lamparter
Diana Craciun writes:
> Implement Spectre variant 2 workarounds for NXP PowerPC Book3E
> processors.
>
> Diana Craciun (11):
> Add infrastructure to fixup branch predictor flush
> Add macro to flush the branch predictor
> Fix spectre_v2 mitigations reporting
> Emulate SPRN_BUCSR register
>
On Fri, 2018-11-16 at 17:31:08 UTC, Christophe Leroy wrote:
> mfsrin() takes segment num from bits 0-3
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/32c8c4c621897199e690760c2d5705
cheers
On Fri, 2018-11-16 at 17:27:42 UTC, Christophe Leroy wrote:
> This patch fixes the loop in p_block_mapped() and v_block_mapped()
> to scan the entire bat_addrs[] array.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/e93ba1b7eb5b188c749052df
On Fri, 2018-11-16 at 17:08:03 UTC, Christophe Leroy wrote:
> Depending on the CONFIG selected, many of the MMU features are
> not possible. Lets only get the possible ones in MMU_FTRS_POSSIBLE.
>
> This allows gcc to get rid at compile time of code related to
> not possible features.
>
> Signed-
On Mon, 2018-11-12 at 05:28:06 UTC, Joel Stanley wrote:
> When building for ppc32 with clang these flags are unsupported:
>
> -ffixed-r2 and -mmultiple
>
> llvm's lib/Target/PowerPC/PPCRegisterInfo.cpp marks r2 as reserved on
> when building for SVR4ABI and !ppc64:
>
> // The SVR4 ABI reserv
On Fri, 2018-11-09 at 17:33:15 UTC, Christophe Leroy wrote:
> Using patch_site_addr() helper, patch_instruction_site() and
> patch_branch_site() can be simplified and inlined.
>
> Signed-off-by: Christophe Leroy
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/45090c2661
On Mon, 2018-11-05 at 09:01:01 UTC, Michael Ellerman wrote:
> Add some documentation on which CPU versions map to which ISA
> versions. This is all publicly available information, some of it
> already in the kernel source, but it's much nicer to have it all in
> one place.
>
> Signed-off-by: Micha
On Fri, 2018-11-02 at 00:44:55 UTC, Joel Stanley wrote:
> We cannot build these files with clang as it does not allow altivec
> instructions in assembly when -msoft-float is passed.
>
> Jinsong Ji wrote:
> > We currently disable Altivec/VSX support when enabling soft-float. So
> > any usage of v
On Thu, 2018-10-18 at 05:22:06 UTC, Christophe Leroy wrote:
> In file included from ./include/linux/hugetlb.h:445:0,
> from arch/powerpc/kernel/setup-common.c:37:
> ./arch/powerpc/include/asm/hugetlb.h: In function
> âÂÂhuge_ptep_clear_flushâÂÂ:
> ./arch/powerpc/include/asm/
On Sun, 2018-08-19 at 20:23:57 UTC, Darren Stevens wrote:
> Add routines for Nemo specific devices to init at boot time, these
> being board level power-off and SB600's rtc.
>
> Also add a run time variable to prevent these being activated
> if we boot on a reference board.
>
> Signed-off
On Sun, 2018-08-19 at 20:21:47 UTC, Darren Stevens wrote:
> Add a IRQ init routine for the Nemo board which inits and attatches
> the i8259 found in the SB600, and a cascade routine to dispatch the
> interrupts.
>
> Signed-off-by: Darren Stevens
Applied to powerpc next, thanks.
https://git.kern
On Sun, 2018-08-19 at 20:21:55 UTC, Darren Stevens wrote:
> The A-Eon Amigaone X1000's Nemo motherboard has an AMD SB600
> connected to one of the PCI-e root ports on its PaSemi
> Pwrficient 1628M SoC. Normally the SB600 southbridge would be
> connected to a hidden PCI-e port on the system's northb
On Sun, 2018-08-19 at 20:21:47 UTC, Darren Stevens wrote:
> Add a IRQ init routine for the Nemo board which inits and attatches
> the i8259 found in the SB600, and a cascade routine to dispatch the
> interrupts.
>
> Signed-off-by: Darren Stevens
Applied to powerpc next, thanks.
https://git.kern
On Sun, 2018-06-10 at 14:27:01 UTC, Madhavan Srinivasan wrote:
> In previous generation processors, both bus events and direct
> events of performance monitoring unit can be individually
> programmabled and monitored in PMCs.
>
> But in Power9, L2/L3 bus events are always available as a
> "bank" o
On Mon, 2017-10-09 at 14:12:39 UTC, Madhavan Srinivasan wrote:
> Update the raw event code comment in power9-pmu.c with respect to
> "cache" bits, since power9 MMCRC does not support these.
>
> Signed-off-by: Madhavan Srinivasan
Series applied to powerpc next, thanks.
https://git.kernel.org/pow
On Thu, 2018-12-20 at 02:42:51 UTC, YueHaibing wrote:
> Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE
> for debugfs files.
>
> Semantic patch information:
> Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
> imposes some significant overhead as compared to
> DEFINE_DEB
On Tue, 2018-12-11 at 22:40:53 UTC, Christophe Leroy wrote:
> This patch implements CONFIG_DEBUG_VIRTUAL to warn about
> incorrect use of virt_to_phys() and page_to_phys()
>
> Below is the result of test_debug_virtual:
>
> [1.438746] WARNING: CPU: 0 PID: 1 at ./arch/powerpc/include/asm/io.h:8
On Mon, 2018-12-17 at 14:18:27 UTC, Christophe Leroy wrote:
> If the device tree doesn't reside in the memory which is declared
> inside it, it has to be moved as well as this memory will not be
> mapped by the kernel.
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https:/
On Sun, 2018-12-16 at 21:28:50 UTC, Greg Kurz wrote:
> All fields in the PE are big-endian. Use cpu_to_be32() like everywhere
> else something is written to the PE. Otherwise a wrong TID will be used
> by the NPU. If this TID happens to point to an existing thread sharing
> the same mm, it could be
On Sun, 2018-12-16 at 17:28:28 UTC, "Dmitry V. Levin" wrote:
> Invoke tracehook_report_syscall_entry once.
>
> Signed-off-by: Dmitry V. Levin
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/8dbdec0bcb416d0ef0bfd737620d08
cheers
On Sun, 2018-12-16 at 17:19:44 UTC, Christoph Hellwig wrote:
> AMIGAONE selects NOT_COHERENT_CACHE, so we better allow it.
>
> Signed-off-by: Christoph Hellwig
Series applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/9286356907caa2d4737bd9dd8afe0b
cheers
On Sun, 2018-12-16 at 16:53:49 UTC, Christoph Hellwig wrote:
> Powerpc has somewhat odd usage where ZONE_DMA is used for all memory on
> common 64-bit configfs, and ZONE_DMA32 is used for 31-bit schemes.
>
> Move to a scheme closer to what other architectures use (and I dare to
> say the intent of
On Fri, 2018-12-14 at 15:23:33 UTC, Christophe Leroy wrote:
> As several other arches including x86, this patch makes it explicit
> that a bad page fault is a NULL pointer dereference when the fault
> address is lower than PAGE_SIZE
>
> In the mean time, this page makes all bad_page_fault() messag
On Fri, 2018-12-14 at 13:57:11 UTC, Michael Ellerman wrote:
> This reverts the remains of commit b9ef7d6b11c1 ("powerpc: Update
> default configurations").
>
> That commit was proceeded by a commit which added a config option to
> control use of BOOTX for early debug, ie. PPC_EARLY_DEBUG_BOOTX, an
On Fri, 2018-12-14 at 10:27:47 UTC, Christophe Leroy wrote:
> This patch fixes early DEBUG messages in prom.c:
> - Use %px instead of %p to see the addresses
> - Cast memblock_phys_mem_size() with (unsigned long long) to
> avoid build failure when phys_addr_t is not 64 bits.
>
> Signed-off-by: Chr
On Wed, 2018-12-12 at 14:03:00 UTC, Diana Craciun wrote:
> In order to protect against speculation attacks (Spectre
> variant 2) on NXP PowerPC platforms, the branch predictor
> should be flushed when the privillege level is changed.
> This patch is adding the infrastructure to fixup at runtime
> t
On Tue, 2018-12-11 at 02:27:33 UTC, Benjamin Herrenschmidt wrote:
> >From 88509506b80b4960004146280eb740be64513a0b Mon Sep 17 00:00:00 2001
> The bamboo dts has a bug: it uses a non-naturally aligned range
> for PCI memory space. This isnt' supported by the code, thus
> causing PCI to break on this
On Mon, 2018-12-10 at 21:51:57 UTC, Arnd Bergmann wrote:
> For this use case, completions and semaphores are equivalent,
> but semaphores are an awkward interface that should generally
> be avoided, so use the completion instead.
>
> Signed-off-by: Arnd Bergmann
Applied to powerpc next, thanks.
On Mon, 2018-12-10 at 15:13:38 UTC, Greg Kurz wrote:
> The AFU irq code doesn't need to reach out to the platform.
>
> Signed-off-by: Greg Kurz
> Acked-by: Andrew Donnellan
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/d1f75a96842b265ca2a89b7ed477a5
cheers
On Mon, 2018-12-10 at 15:18:13 UTC, Greg Kurz wrote:
> Implementing rollback with goto and labels is a common practice that
> leads to prettier and more maintainable code. FWIW, this design pattern
> is already being used in alloc_link() a few lines below in this file.
>
> Do the same in setup_xsl
On Mon, 2018-12-10 at 12:23:05 UTC, Christophe Leroy wrote:
> Define slice_init_new_context_exec() at all time to avoid
>
> Signed-off-by: Christophe Leroy
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/badb9687cec50bdba59746532de196
cheers
On Mon, 2018-12-10 at 08:08:28 UTC, Christophe Leroy wrote:
> On several arches, virt_to_phys() is in io.h
>
> Build fails without it:
>
> CC lib/test_debug_virtual.o
> lib/test_debug_virtual.c: In function 'test_debug_virtual_init':
> lib/test_debug_virtual.c:26:7: error: implicit declara
On Mon, 2018-12-10 at 06:50:09 UTC, Christophe Leroy wrote:
> With the following piece of code, the following compilation warning
> is encountered:
>
> if (_IOC_DIR(ioc) != _IOC_NONE) {
> int verify = _IOC_DIR(ioc) & _IOC_READ ? VERIFY_WRITE :
> VERIFY_READ;
>
>
On Sun, 2018-12-09 at 09:25:35 UTC, Madhavan Srinivasan wrote:
> On each sample, Sample Instruction Event Register (SIER) content
> is saved in pt_regs. SIER does not have a entry as-is in the pt_regs
> but instead, SIER content is saved in the "dar" register of pt_regs.
>
> Patch adds another ent
On Sun, 2018-12-09 at 09:18:15 UTC, Madhavan Srinivasan wrote:
> MMCRA[34:36] and MMCRA[38:44] expose the thresholding counter value.
> Thresholding counter can be used to count latency cycles such as
> load miss to reload. But threshold counter value is not relevant
> when the sampled instruction
On Thu, 2018-12-06 at 06:58:59 UTC, Michael Ellerman wrote:
> ipic_set_priority() has been unused since 2006 when the last usage was
> removed in commit b9f0f1bb2bca ("[POWERPC] Adapt ipic driver to new
> host_ops interface, add set_irq_type to set IRQ sense").
>
> Reported-by: Dan Carpenter
> Si
On Wed, 2018-12-05 at 17:53:55 UTC, Mathieu Malaterre wrote:
> The code:
>
> ifdef CONFIG_6xx
> KBUILD_CFLAGS += -mcpu=powerpc
> endif
>
> was added in 2006 in commit f48b8296b315 ("[PATCH] powerpc32: Set cpu
> explicitly in kernel compiles"). This change was acceptable since the
>
On Tue, 2018-12-04 at 17:59:15 UTC, Christophe Leroy wrote:
> commit f21f49ea639a ("[POWERPC] Remove the dregs of APUS support from
> arch/powerpc") removed CONFIG_APUS, but forgot to remove the logic
> which adapts tophys() and tovirt() for it.
>
> This patch removes the last stale pieces.
>
> S
On Wed, 2018-11-28 at 17:21:10 UTC, Christophe Leroy wrote:
> The 603 doesn't have a HASH table, TLB misses are handled by
> software. It is then possible to generate page fault when
> _PAGE_EXEC is not set like in nohash/32.
>
> There is one "reserved" PTE bit available, this patch uses
> it for
On Tue, 2018-11-27 at 17:38:16 UTC, Christophe Leroy wrote:
> This patch adds STACK_FRAME_REGS_MARKER in the stack at exception entry
> in order to see interrupts in call traces as below:
>
> [0.013964] Call Trace:
> [0.014014] [c0745db0] [c007a9d4] tick_periodic.constprop.5+0xd8/0x104
>
On Mon, 2018-11-26 at 14:35:04 UTC, "Aneesh Kumar K.V" wrote:
> With commit 2865d08dd9ea ("powerpc/mm: Move the DSISR_PROTFAULT sanity check")
> we moved the protection fault access check before vma lookup. That means we
> hit that WARN_ON when user space access a kernel address. Before the commit
Steven Rostedt writes:
> From: "Steven Rostedt (VMware)"
>
> The structure of the ret_stack array on the task struct is going to
> change, and accessing it directly via the curr_ret_stack index will no
> longer give the ret_stack entry that holds the return address. To access
> that, architectur
On Fri, Dec 21, 2018 at 08:29:56PM -0600, Scott Wood wrote:
> On Fri, 2018-12-07 at 09:22 +0100, Nicholas Mc Guire wrote:
> > devm_kstrdup() may return NULL if internal allocation failed, but
> > as machine is from the device tree, and thus RO, devm_kstrdup_const()
> > can be used here, which wil
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