Messages in this thread | | | Subject | Re: [PATCH v3 06/15] powerpc/32: prepare for CONFIG_VMAP_STACK | From | Christophe Leroy <> | Date | Fri, 18 Oct 2019 08:46:35 +0200 |
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Le 17/10/2019 à 09:36, Andrew Donnellan a écrit : > On 10/9/19 7:16 pm, Christophe Leroy wrote: >> +#if defined(CONFIG_VMAP_STACK) && CONFIG_THREAD_SHIFT < PAGE_SHIFT >> +#define THREAD_SHIFT PAGE_SHIFT >> +#else >> #define THREAD_SHIFT CONFIG_THREAD_SHIFT >> +#endif >> >> #define THREAD_SIZE (1 << THREAD_SHIFT) >> > > Looking at 64-bit book3s: with 64K pages, this results in a THREAD_SIZE > that's too large for immediate mode arithmetic operations, which is > annoying. Hmm. >
Which operation are you thinking about ?
For instance, 'addi' can't be used anymore, but 'addis' can.
Christophe
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