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Default branch: MAIN
Current tag: bouyer-xenpvh
Revision 1.4 / (download) - annotate - [select for diffs], Wed Mar 11 13:30:31 2020 UTC (4 years ago) by thorpej
Branch: MAIN
CVS Tags: phil-wifi-20200421,
phil-wifi-20200411,
phil-wifi-20200406,
bouyer-xenpvh-base2,
bouyer-xenpvh-base1,
bouyer-xenpvh-base,
bouyer-xenpvh
Changes since 1.3: +3 -1
lines
Diff to previous 1.3 (colored)
With DEBUG defined, it's possible to execute a TLB-vs-segmap consistency check from a (soft) interrupt handler. But if a platform does not otherwise require the pmap_tlb_miss_lock, then where will be a brief window of inconsistency that, while harmless, will still fire an assertion in the consistency check. Fix this with the following changes: 1- Refactor the pmap_tlb_miss_lock into MI code and rename it from pmap_tlb_miss_lock_{enter,exit}() to pmap_tlb_miss_lock_{enter,exit}(). MD code can still define the "md" hooks as necessary, and if so, will override the common implementation. 2- Provde a pmap_bootstrap_common() function to perform common pmap bootstrap operations, namely initializing the pmap_tlb_miss_lock if it's needed. If MD code overrides the implementation, it's responsible for initializing its own lock. 3- Call pmap_bootstrap_common() from the mips, powerpc booke, and riscv pmap_bootstrap() routines. (This required adding one for riscv.) 4- Switch powerpc booke to the common pmap_tlb_miss_lock. 5- Enable pmap_tlb_miss_lock if DEBUG is defined, even if it's not otherwise required. PR port-mips/55062 (Failed assertion in pmap_md_tlb_check_entry())