Messages in this thread | | | Date | Fri, 17 Jun 2022 13:36:17 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCHv3 5/8] x86/uaccess: Provide untagged_addr() and remove tags before address check |
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On Thu, Jun 16, 2022 at 07:44:40PM +0300, Kirill A. Shutemov wrote: > Any objection against this variant (was posted in the thread): > > #define untagged_addr(mm, addr) ({ \ > u64 __addr = (__force u64)(addr); \ > s64 sign = (s64)__addr >> 63; \ > __addr &= (mm)->context.untag_mask | sign; \ > (__force __typeof__(addr))__addr; \ > }) > > ?
Yeah, I suppose that should work fine.
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