AuxXxilium/linux_dsm_epyc7002
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7641842164
linux_dsm_epyc7002/arch/x86
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Alexander Duyck 7641842164 swiotlb-xen: Enforce return of DMA_ERROR_CODE in mapping function 
The mapping function should always return DMA_ERROR_CODE when a mapping has
failed as this is what the DMA API expects when a DMA error has occurred.
The current function for mapping a page in Xen was returning either
DMA_ERROR_CODE or 0 depending on where it failed.

On x86 DMA_ERROR_CODE is 0, but on other architectures such as ARM it is
~0. We need to make sure we return the same error value if either the
mapping failed or the device is not capable of accessing the mapping.

If we are returning DMA_ERROR_CODE as our error value we can drop the
function for checking the error code as the default is to compare the
return value against DMA_ERROR_CODE if no function is defined.

Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org>
2016-11-07 15:06:32 -05:00
..
boot x86/efi: Use efi_exit_boot_services() 2016-09-05 12:40:16 +01:00
configs kconfig: tinyconfig: provide whole choice blocks to avoid warnings 2016-09-01 17:52:01 -07:00
crypto crypto: sha512-mb - fix ctx pointer 2016-08-16 17:09:43 +08:00
entry x86/entry/64: Fix context tracking state warning when load_gs_index fails 2016-09-30 13:53:12 +02:00
events perf/x86/intel/bts: Make it an exclusive PMU 2016-09-22 14:56:08 +02:00
ia32 mm: remove more IS_ERR_VALUE abuses 2016-05-27 15:57:31 -07:00
include x86/init: Fix cr4_init_shadow() on CR4-less machines 2016-09-29 19:08:30 +02:00
kernel x86/boot: Initialize FPU and X86_FEATURE_ALWAYS even if we don't have CPUID 2016-09-30 13:53:04 +02:00
kvm Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-09-18 11:50:48 -07:00
lguest lguest: Read offset of device_cap later 2016-06-10 11:39:09 +02:00
lib x86/mm/kaslr: Fix -Wformat-security warning 2016-08-11 10:58:12 +02:00
math-emu
mm x86/mm/pat: Prevent hang during boot when mapping pages 2016-09-20 14:53:00 +01:00
net bpf, x86: add support for constant blinding 2016-05-16 13:49:32 -04:00
oprofile x86/cpufeature: Replace cpu_has_apic with boot_cpu_has() usage 2016-04-13 11:37:41 +02:00
pci PCI: Mark Haswell Power Control Unit as having non-compliant BARs 2016-09-01 08:52:29 -05:00
platform x86/efi: Only map RAM into EFI page tables if in mixed-mode 2016-09-20 14:53:04 +01:00
power x86/power/64: Use __pa() for physical address computation 2016-08-16 00:39:37 +02:00
purgatory Add sancov plugin 2016-06-07 22:57:10 +02:00
ras x86/RAS/AMD: Reduce the number of IPIs when prepping error injection 2016-07-08 11:29:26 +02:00
realmode x86/boot: Rework reserve_real_mode() to allow multiple tries 2016-08-11 11:15:01 +02:00
tools x86/insn: Add AVX-512 support to the instruction decoder 2016-07-21 09:37:11 -03:00
um um/ptrace: Fix the syscall number update after a ptrace 2016-09-07 09:25:04 -07:00
video x86/video: Don't assume all FB devices are PCI devices 2016-03-15 11:08:26 +01:00
xen swiotlb-xen: Enforce return of DMA_ERROR_CODE in mapping function 2016-11-07 15:06:32 -05:00
.gitignore
Kbuild
Kconfig mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS 2016-08-30 10:10:21 -07:00
Kconfig.cpu
Kconfig.debug Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-03-15 09:32:27 -07:00
Makefile kbuild: abort build on bad stack protector flag 2016-07-26 16:19:19 -07:00
Makefile_32.cpu
Makefile.um