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  1. 22 6月, 2016 6 次提交
    • A
      memory: Add reporting of supported page sizes · f682e9c2
      由 Alexey Kardashevskiy 提交于 
      Every IOMMU has some granularity which MemoryRegionIOMMUOps::translate
uses when translating, however this information is not available outside
the translate context for various checks.

This adds a get_min_page_size callback to MemoryRegionIOMMUOps and
a wrapper for it so IOMMU users (such as VFIO) can know the minimum
actual page size supported by an IOMMU.

As IOMMU MR represents a guest IOMMU, this uses TARGET_PAGE_SIZE
as fallback.

This removes vfio_container_granularity() and uses new helper in
memory_region_iommu_replay() when replaying IOMMU mappings on added
IOMMU memory region.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: NDavid Gibson <david@gibson.dropbear.id.au>
Acked-by: NAlex Williamson <alex.williamson@redhat.com>
[dwg: Removed an unnecessary calculation]
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      f682e9c2
    • B
      ppc: Improve emulation of THRM registers · f0278900
      由 Benjamin Herrenschmidt 提交于 
      The 75x and 74xx processors have some thermal monitoring SPRs that
some OSes such as MacOS do use. Our current "dumb" implementation
isn't good enough and will cause some versions of MacOS to hang during
boot.

This lifts an improved emulation from MacOnLinux and adapts it to
qemu, thus fixing the problem.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
[dwg: Fixed typo in comment, a number of minor checkpatch warnings,
 and a compile failure with CONFIG_USER_ONLY]
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      f0278900
    • R
      target-ppc: Fix rlwimi, rlwinm, rlwnm again · 820724d1
      由 Richard Henderson 提交于 
      In 63ae0915, I arranged to use a 32-bit rotate, without
considering the effect of a mask value that wraps around to
the high bits of the word.

[dwg: In 2e11b15d this was partially fixed, but an edge case was still
incorrect, which this fixes]
Signed-off-by: NRichard Henderson <rth@twiddle.net>
[dwg: Folded with a revert of 2e11b15d, an earlier buggy version of
 this patch which already went upstream]
Tested-by: NAnton Blanchard <anton@samba.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      820724d1
    • L
      ppc64: disable gen_pause() for linux-user mode · 7f2b1744
      由 Laurent Vivier 提交于 
      While trying to install a fedora container with
"lxc-create -t fedora -- -I qemu-ppc64" the installation abort with
the following error:

qemu: fatal: Unknown exception 0x65537. Aborting

NIP 0000004000927924   LR 00000040009e325c CTR 0000004000927480 XER 0000000000000000 CPU#0
MSR 9000000102806000 HID0 0000000000000000  HF 9000000002806000 iidx 3 didx 3
TB 00248932 1069155773327487
GPR00 00000040009e325c 00000040007ff800 0000004000aba098 0000000000000000
GPR04 00000040007ff878 0000004000dcb588 0000004000dcb830 0000004000a7a098
GPR08 0000000000000000 0000000000000000 00000040007ff878 0000004000927960
GPR12 0000000022022448 0000004000e2aef0 0000000000000000 0000000000000000
GPR16 0000000000000000 0000000000000000 0000000000000002 0000000000000001
GPR20 0000000000000000 0000000000000000 0000000000000000 0000004000800699
GPR24 0000004000e13320 0000000000000000 0000004000ac9ad8 0000004000ac9ae0
GPR28 0000000000000001 00000000100210a0 0000000000000000 0000000000000038
CR 22022442  [ E  E  -  E  E  G  G  E  ]             RES ffffffffffffffff
FPR00 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR04 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR08 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR12 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR16 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR20 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR24 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPR28 0000000000000000 0000000000000000 0000000000000000 0000000000000000
FPSCR 0000000000000000
/usr/share/lxc/templates/lxc-fedora: line 487: 26661 Aborted                 (core dumped) chroot . yum -y --nogpgcheck --installroot /run/install install python rpm yum

I've bisected until the commit:

    commit b68e60e6
    Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Date:   Tue May 3 18:03:33 2016 +0200

        ppc: Get out of emulation on SMT "OR" ops

        Otherwise tight loops at smt_low for example, which OPAL does,
        eat so much CPU that we can't boot a kernel anymore. With that,
        I can boot 8 CPUs just fine with powernv.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

We can fix that by preventing to send EXCP_HLT in the case of linux-user mode,
as the main loop doesn't know how to manage it.
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      7f2b1744
    • T
      tests: Use '+=' to add additional tests, not '=' · 0ccac16f
      由 Thomas Huth 提交于 
      The recent commit that added the prom-env-test accidentially
overwrote the check-qtest-ppc-y, check-qtest-ppc64-y and
check-qtest-sparc-y variables instead of extending them.

Fixes: fcbf4a3cSigned-off-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      0ccac16f
    • A
      powerpc/mm: Update the WIMG check during H_ENTER · c1175907
      由 Aneesh Kumar K.V 提交于 
      Support for 0 value for memeory coherence is optional and with ppc64
we can always enable memory coherence. Linux kernel did that during
the development of 4.7 kernel. But that resulted in failure in Qemu
in H_ENTER hcall due to below check. The mentioned change was reverted
in the kernel and kernel right now enable memory coherence only if
cache inhibited is not set. Nevertheless update qemu WIMG flag check
to cover the case where we enable memory coherence along with cache
inhibited flag.

In order to handle older and newer kernel version consider both Cache
inhibitted and (cache inhibitted | memory conference) as valid values
for wimg flags.
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
      c1175907
  3. 21 6月, 2016 34 次提交