#11578: Fix GHC on AArch64/Arm64 -------------------------------------+------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: aarch64 Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------- Comment (by mfox): Something I've heard about but don't fully understand the implications (if any) for ghc: * Some programs assume that a page size is 4k. Arm64 can have larger and smaller pages. * Some programs assume 47-bit virtual address space with bit 48 signaling kernel space; the feel free to use bits [63:49] of a pointer as a tag. Arm64 Doesn't like it. Can still use bits [63:56] as a tag Again, I don't know the implications for ghc. Just mentioning it in case someone knows more. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11578#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler