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Linus Torvalds 1a6d80ff24 arm64 fix for 5.14 
- Fix dma_map_resource() by reverting back to old pfn_valid() code
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fix from Will Deacon:
 "We received a report this week that the generic version of
  pfn_valid(), which we switched to this merge window in 16c9afc776
  ("arm64/mm: drop HAVE_ARCH_PFN_VALID"), interacts badly with
  dma_map_resource() due to the following check:

        /* Don't allow RAM to be mapped */
        if (WARN_ON_ONCE(pfn_valid(PHYS_PFN(phys_addr))))
                return DMA_MAPPING_ERROR;

  Since the ongoing saga to determine the semantics of pfn_valid() is
  unlikely to be resolved this week (does it indicate valid memory, or
  just the presence of a struct page, or whether that struct page has
  been initialised?), just revert back to our old version of pfn_valid()
  for 5.14.

  Summary:

   - Fix dma_map_resource() by reverting back to old pfn_valid() code"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  Partially revert "arm64/mm: drop HAVE_ARCH_PFN_VALID"
2021-08-26 11:26:00 -07:00
..
boot Qualcomm ARM64 fixes for v5.14 2021-08-16 23:22:03 +02:00
configs Additional Qualcomm ARM64 defconfig udpate for v5.14 2021-06-23 19:01:58 -07:00
crypto crypto: arm64 - use a pattern rule for generating *.S files 2021-05-14 19:07:54 +08:00
include Partially revert "arm64/mm: drop HAVE_ARCH_PFN_VALID" 2021-08-25 11:33:24 +01:00
kernel arm64: stacktrace: avoid tracing arch_stack_walk() 2021-08-03 10:39:35 +01:00
kvm KVM: arm64: Fix race when enabling KVM_ARM_CAP_MTE 2021-07-29 17:34:01 +01:00
lib arm64: Avoid premature usercopy failure 2021-07-15 17:29:14 +01:00
mm Partially revert "arm64/mm: drop HAVE_ARCH_PFN_VALID" 2021-08-25 11:33:24 +01:00
net bpf: Introduce BPF nospec instruction for mitigating Spectre v4 2021-07-29 00:20:56 +02:00
tools arm64: Allow mismatched 32-bit EL0 support 2021-06-11 13:25:40 +01:00
xen
Kbuild bpf: Fix BPF_JIT kconfig symbol dependency 2021-05-20 23:48:37 +02:00
Kconfig Partially revert "arm64/mm: drop HAVE_ARCH_PFN_VALID" 2021-08-25 11:33:24 +01:00
Kconfig.debug
Kconfig.platforms Merge branch 'arm/fixes' into arm/soc 2021-07-09 10:46:02 -07:00
Makefile arm64: clean vdso & vdso32 files 2021-08-11 11:04:55 +01:00