Hi Arnd,
On Mon, 11 Aug 2008 16:18:07 +0200 Arnd Bergmann [EMAIL PROTECTED] wrote:
+#ifdef CONFIG_MODULES
+.macro __EXPORT_SYMBOL sym section symtab strtab
+ .section \section,a,@progbits
+ .type \symtab, @object
+ .ifeq BITS_PER_LONG-32
+ .align 3
+\symtab:
+ .long
When we fork, init_new_context() improperly resets the vdso_base
of the new context to 0. That means that the new process loses
access to the vdso for signal trampolines.
The initialization should be unnecessary anyway as the context
on a fresh mm should be 0 in the first place and binfmt_elf
As my scripts did wrong commit, I have posted wrong patches. I am posting
the patches 3,4 and 5 again. Sorry for the inconvenience.
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Build files needed for relocation
This patch builds vmlinux file with relocation sections and contents so
that relocs user space program can extract the required relocation
offsets. This packs final relocatable vmlinux kernel as following:
earlier part of relocation apply code, vmlinux, rest of
Apply relocation
This code is a wrapper around regular kernel. This checks whether the
kernel is loaded at 32MB, if its not loaded at 32MB, its treated as a
regular kernel and the control is given to the kernel immediately. If
the kernel is loaded at 32MB, it applies relocation delta to each
Relocation support
Add relocatable kernel support like avoiding copying the vmlinux
image to compile address, adding relocation delta to the absolute
symbol references etc. ld does not provide relocation entries for
.got section, and the user space relocation extraction program
can not process
Relocation support for kdump kernel
Add relocation kernel support for kdump kernel path.
Signed-off-by: Mohan Kumar M [EMAIL PROTECTED]
---
arch/powerpc/kernel/crash_dump.c | 19 +++
arch/powerpc/kernel/iommu.c|7 +--
I recommend you look at 2/2 instead of 2/1. 2/1 is just a
degenerate case and it doesn't really get you much value.
- k
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Thank you...I will take that recommendation...
I will try that and get some results before I complete my
response to Becky this morning...
T
-Original Message-
From: Kumar Gala [mailto:[EMAIL PROTECTED]
Sent: Tuesday, August 12, 2008 8:42 AM
To: Morrison, Tom
Cc: ppc-dev list; Becky
Hi Roland,
the following patchset contains four small fixes and one bigger patch
(5/5) for addressing some ehca issues we found during cluster test.
[1/5] update qp_state on cached modify_qp()
[2/5] rename goto label in ehca_poll_cq_one()
[3/5] repoll on invalid opcode instead of returning
Rename the poll_cq_one_read_cqe goto label to what it actually does,
repoll.
Signed-off-by: Alexander Schmidt [EMAIL PROTECTED]
---
drivers/infiniband/hw/ehca/ehca_reqs.c |6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
---
Under rare circumstances, the ehca hardware might erroneously generate
two CQEs for the same WQE, which is not compliant to the IB spec and
will cause unpredictable errors like memory being freed twice. To avoid
this problem, the driver needs to detect the second CQE and discard it.
For this
When the ehca driver detects an invalid opcode in a CQE, it currently
passes the CQE to the application and returns with success. This patch
changes the CQE handling to discard CQEs with invalid opcodes and to
continue reading the next CQE from the CQ.
Signed-off-by: Alexander Schmidt [EMAIL
The idr_find() function may fail when trying to get the QP that is
associated with a CQE, e.g. when a QP has been destroyed between the
generation of a CQE and the poll request for it. In consequence, the
return value of idr_find() must be checked and the CQE must be
discarded when the QP cannot
Since the introduction of the port auto-detect mode for ehca, calls to
modify_qp() may be cached in the device driver when the ports are not
activated yet. When a modify_qp() call is cached, the qp state remains
untouched until the port is activated, which will leave the qp in the reset
state. In
Hi Roland,
Sorry, the first set was mangled because of a broken mailer, so here it is
again, double checked...
the following patchset contains four small fixes and one bigger patch
(5/5) for addressing some ehca issues we found during cluster test.
[1/5] update qp_state on cached modify_qp()
The idr_find() function may fail when trying to get the QP that is associated
with a CQE, e.g. when a QP has been destroyed between the generation of a CQE
and the poll request for it. In consequence, the return value of idr_find()
must be checked and the CQE must be discarded when the QP cannot
When the ehca driver detects an invalid opcode in a CQE, it currently passes
the CQE to the application and returns with success. This patch changes the
CQE handling to discard CQEs with invalid opcodes and to continue reading the
next CQE from the CQ.
Signed-off-by: Alexander Schmidt [EMAIL
Under rare circumstances, the ehca hardware might erroneously generate
two CQEs for the same WQE, which is not compliant to the IB spec and will
cause unpredictable errors like memory being freed twice. To avoid this
problem, the driver needs to detect the second CQE and discard it.
For this
Rename the poll_cq_one_read_cqe goto label to what it actually does,
repoll.
Signed-off-by: Alexander Schmidt [EMAIL PROTECTED]
---
drivers/infiniband/hw/ehca/ehca_reqs.c |6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
---
Benjamin Herrenschmidt wrote:
1. IDE status read does not work. (But am I understand correctly
that IDE works well if IRQ is unspecified? Then this is hardly
an issue.)
2. IDE interrupt comes when it should not. I'd recommend to use
oscilloscope to find out what is happening
This makes it possible to export symbols from assembly files, instead
of having to export them through an extra ksyms.c file.
Signed-off-by: Arnd Bergmann [EMAIL PROTECTED]
---
On Tuesday 12 August 2008, Stephen Rothwell wrote:
This won't be portable across architectures as .align is sometimes
On Tue, Aug 12, 2008 at 10:00:40AM -0400, Steven A. Falco wrote:
Benjamin Herrenschmidt wrote:
1. IDE status read does not work. (But am I understand correctly
that IDE works well if IRQ is unspecified? Then this is hardly
an issue.)
2. IDE interrupt comes when it should not.
On Tuesday 12 August 2008, Anton Vorontsov wrote:
Another possibility is that you got the wrong interrupt number
in the device-tree...
Ben.
The platform is the AMCC Sequoia board. We've built a little adapter to
connect a compact flash card to the processor bus. I believe the
Anton Vorontsov wrote:
1. IDE status read does not work. (But am I understand correctly
that IDE works well if IRQ is unspecified? Then this is hardly
an issue.)
2. IDE interrupt comes when it should not. I'd recommend to use
oscilloscope to find out what is happening there, that is, if
On Tue, Aug 12, 2008 at 06:18:42PM +0400, Sergei Shtylyov wrote:
Anton Vorontsov wrote:
1. IDE status read does not work. (But am I understand correctly
that IDE works well if IRQ is unspecified? Then this is hardly
an issue.)
2. IDE interrupt comes when it should not. I'd recommend to
Thank you Becky (and Kumar) for all the informationand help!
To answer your questions, yes, we are using 4GB++ of memory
(and plan more in the near future). But, for the initial bring
up, I reduced the memory to 2Gig. Further, I have modified u-boot
to NOT modify the memory reg properties
On Aug 12, 2008, at 10:14 AM, Morrison, Tom wrote:
Thank you Becky (and Kumar) for all the informationand help!
To answer your questions, yes, we are using 4GB++ of memory
(and plan more in the near future). But, for the initial bring
up, I reduced the memory to 2Gig. Further, I have
This patch fixes bunch of irq checking misuses. Most drivers were
getting irq via platform_get_irq(), which returns -ENXIO or r-start.
Platforms may specify r-start = 0 to emphasize 'no irq' case, and
drivers should handle this correctly.
rtc-cmos.c is special. It is using PNP and platform
Hi Tim,
Continuing the discussion on the mailing list ...
Looking at the original patch I don't undestand why you had to duplicate
the bestcomm data structures and functions. The only apparent difference
is that you have a minimal data length of 2 bytes instead of 1. Does
this make any
thanks, applied all 5.
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When CMO is enabled and booted on a non CMO system and
the VIO device's probe function fails, an oops can result
since vio_cmo_bus_remove is called when it should not.
cpu 0x0: Vector: 300 (Data Access) at [ce13b3d0]
pc: c0020d34: .vio_cmo_bus_remove+0xc0/0x1f4
lr:
On Thu, Aug 07, 2008 at 07:04:04PM -0500, Kumar Gala wrote:
mem_init_done isn't a good indication. We can do page tables when it's
0, we would have to use a separate mem_preinit_done or something :-)
I initially also though about a flag to ioremap_prot to be honest. But
it does obfuscate the
gfar_halt() was factored out into halting and disabling by commit
d87eb12785c14de1586e3bad86ca2c0991300339, as the suspend() method
only wants to do the former. However, the call to gfar_halt_nodisable()
from gfar_halt() apparently got lost during the patch respin process.
This adds it back.
In message [EMAIL PROTECTED] you wrote:
A couple of vmlinux output files that should be ignored: vmlinux.strip
and vmlinux.lds.
Signed-off-by: Sean MacLennan [EMAIL PROTECTED]
---
diff --git a/.gitignore b/.gitignore
This will need to goto LKML.
Mikey
index 869e1a3..f7e924a 100644
---
When removing a directory, the sysfs core takes care of removing files
in the directory (see sysfs_remove_dir()). So when we are about to
delete a kobject (and thus cause its sysfs directory to be removed),
we don't have to explicitly remove the files attached to it, although
it's harmless to do
This implements CONFIG_RELOCATABLE for 64-bit by making the kernel as
a position-independent executable (PIE). This involves processing the
dynamic relocations in the image in the early stages of booting, even
if the kernel is being run at the address it is linked at, since the
linker does not
This changes the way that the exception prologs transfer control to
the handlers in 64-bit kernels with the aim of making it possible to
have the prologs separate from the main body of the kernel. Now,
instead of computing the address of the handler by taking the top
32 bits of the paca address
This demonstrates that the relocatable kernel doesn't have to run at
real address 0. It only copies the interrupt vectors down and leaves
the rest of the kernel where it was loaded, and runs it there.
This is mostly just a proof of concept, since it doesn't do anything
to ensure that the kernel
Using LOAD_REG_IMMEDIATE to get the address of kernel symbols
generates 5 instructions where LOAD_REG_ADDR can do it in one,
and will generate R_PPC64_ADDR16_* relocations in the output when
we get to making the kernel as a position-independent executable,
which we'd rather not have to handle.
This rearranges head_64.S so that we have all the first-level exception
prologs together starting at 0x100, followed by all the second-level
handlers that are invoked from the first-level prologs, followed by
other code. This doesn't make any functional change but will make
following changes for
The following series of patches implement support for a relocatable
kernel by building it as a position-independent executable (PIE).
When the linker is given the -pie flag, it creates an executable that
contains dynamic relocations which can be used to relocate the image
at boot time for any
From: Grant Likely [EMAIL PROTECTED]
ioremap_early() is useful for things like mapping SoC internally memory mapped
register and early text because it allows mappings to devices to be setup
early in the boot process where they are needed, and the mappings persist
after the MMU is configured.
On Thu, Aug 07, 2008 at 11:36:25AM -0600, John Rigby wrote:
Modify mpc83xx_add_bridge to get config space register base address from the
device
tree instead of immr + hardcoded offset.
83xx pci nodes have these changes:
register properties now contain two address length tuples:
On Thu, Aug 07, 2008 at 11:36:26AM -0600, John Rigby wrote:
Uses mpc83xx_add_bridge in fsl_pci.c
Adds second register tuple to pci node register property
as previously done for 83xx device trees in a previous patch.
Signed-off-by: John Rigby [EMAIL PROTECTED]
Looks good to me.
Acked-by:
On Thu, Aug 07, 2008 at 11:36:27AM -0600, John Rigby wrote:
The class of the MPC5121 pci host bridge is PCI_CLASS_BRIDGE_OTHER
while other freescale host bridges have class set to
PCI_CLASS_PROCESSOR_POWERPC.
This patch makes fixup_hide_host_resource_fsl match
PCI_CLASS_BRIDGE_OTHER in
Mohan Kumar M writes:
This code is a wrapper around regular kernel. This checks whether the
kernel is loaded at 32MB, if its not loaded at 32MB, its treated as a
regular kernel and the control is given to the kernel immediately. If
the kernel is loaded at 32MB, it applies relocation delta to
Mohan Kumar M writes:
Add relocatable kernel support like avoiding copying the vmlinux
image to compile address, adding relocation delta to the absolute
symbol references etc. ld does not provide relocation entries for
.got section, and the user space relocation extraction program
can not
On Thu, Aug 07, 2008 at 04:12:54PM +1000, David Gibson wrote:
On Wed, Aug 06, 2008 at 11:46:47AM -0500, Timur Tabi wrote:
On Wed, Aug 6, 2008 at 1:02 AM, Grant Likely [EMAIL PROTECTED] wrote:
From: Grant Likely [EMAIL PROTECTED]
of_lookup_stdout() is useful for figuring out what device
On Tue, Aug 12, 2008 at 6:30 PM, Daniel Schnell
[EMAIL PROTECTED] wrote:
Hi Tim,
Continuing the discussion on the mailing list ...
Looking at the original patch I don't undestand why you had to duplicate
the bestcomm data structures and functions. The only apparent difference
is that you
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