[Xen-devel] [PATCH 0/2] Check VT-d Device-TLB flush error

[Quan Xu <quan.xu@xxxxxxxxx>]

this patch set is a prereq patch set for Patch:'VT-d Device-TLB flush issue'.
Current code would be panic(), when VT-d Device-TLB flush timed out. the panic()
is going to be eliminated, so we must check all kinds of error and all the way 
up
the call trees.

Quan Xu (2):
  IOMMU/MMU: Adjust top level functions for VT-d Device-TLB flush error.
  IOMMU/MMU: Adjust low level functions for VT-d Device-TLB flush error.


This patch set was patch#1/patch#2 of 'VT-d Device-TLB flush issue' v6 patch 
sets.
--Changes in this version:
   * Rebase against efc904263f483026672a5cdf3ccf9be8c4fdaa31.
   * Make a reasonable attempt at splitting things, adjusting top level 
functions first and then
     working the way down to leaf ones.
   * Remove some pointless initializers (Compiler helps me check them).
   * Log error and don't return error value for hardware_domain init and 
crashed system shutdown.
   * when to populate iommu page table for domu, try to tear down the iommu 
page table for iommu
     iotlb flush error.
   * when the flush_iotlb_qi() return value is positive, All we need are:
     -call iommu_flush_write_buffer() only when rc > 0
     -return zero from this function when rc is positive (or 'rc = 0' after 
call iommu_flush_write_buffer()).
   * Fix v4 "VT-d Device-TLB flush issue" unaddressed issue:
     http://lists.xenproject.org/archives/html/xen-devel/2016-01/msg01555.html

 xen/arch/x86/acpi/power.c                     |  14 ++-
 xen/arch/x86/mm.c                             |  13 +--
 xen/arch/x86/mm/p2m-ept.c                     |  12 ++-
 xen/arch/x86/mm/p2m-pt.c                      |  12 ++-
 xen/common/grant_table.c                      |   5 +-
 xen/common/memory.c                           |   5 +-
 xen/drivers/passthrough/amd/iommu_init.c      |  12 ++-
 xen/drivers/passthrough/amd/pci_amd_iommu.c   |   2 +-
 xen/drivers/passthrough/arm/smmu.c            |  10 ++-
 xen/drivers/passthrough/iommu.c               |  25 ++++--
 xen/drivers/passthrough/vtd/extern.h          |   2 +-
 xen/drivers/passthrough/vtd/iommu.c           | 120 ++++++++++++++++++--------
 xen/drivers/passthrough/vtd/quirks.c          |  26 +++---
 xen/drivers/passthrough/vtd/x86/vtd.c         |   7 +-
 xen/drivers/passthrough/x86/iommu.c           |   6 +-
 xen/include/asm-x86/hvm/svm/amd-iommu-proto.h |   2 +-
 xen/include/asm-x86/iommu.h                   |   2 +-
 xen/include/xen/iommu.h                       |  12 +--
 18 files changed, 199 insertions(+), 88 deletions(-)

-- 
1.9.1


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