Messages in this thread | | | Date | Wed, 28 Feb 2018 13:58:04 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH] selftests/vm: Update max va test to check for high address return. |
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On Wed, Feb 28, 2018 at 09:28:30AM +0530, Aneesh Kumar K.V wrote: > mmap(-1,..) is expected to search from max supported VA top down. It should find > an address above ADDR_SWITCH_HINT. Explicitly check for this.
Hm. I don't think this correct. -1 means the application supports any address, not restricted to 47-bit address space. It doesn't mean the application *require* the address to be above 47-bit.
At least on x86, -1 just shift upper boundary of address range where we can look for unmapped area.
-- Kirill A. Shutemov
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