Re: [PATCH v5 7/8] execmem: add support for cache of large ROX pages
From: Christoph Hellwig <hch@infradead.org>
Date: 2024-10-10 06:58:47
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On Wed, Oct 09, 2024 at 09:08:15PM +0300, Mike Rapoport wrote:
/**
* struct execmem_info - architecture parameters for code allocations
+ * @fill_trapping_insns: set memory to contain instructions that will trap
* @ranges: array of parameter sets defining architecture specific
* parameters for executable memory allocations. The ranges that are not
* explicitly initialized by an architecture use parameters defined for
* @EXECMEM_DEFAULT.
*/
struct execmem_info {
+ void (*fill_trapping_insns)(void *ptr, size_t size, bool writable);
struct execmem_range ranges[EXECMEM_TYPE_MAX];Why is the filler an indirect function call and not an architecture hook?