On 29.07.25 10:52, Jan Beulich wrote:
On 29.07.2025 10:38, Juergen Gross wrote:--- a/arch/x86/mm.c +++ b/arch/x86/mm.c @@ -640,13 +640,20 @@ void change_readonly(bool readonly) /* * return a valid PTE for a given virtual address. If PTE does not exist, * allocate page-table pages. + * Provide a small pool for allocating some page tables very early. Those are + * needed currently for mapping the shared info page, so 2 pages ought to be + * enough. Add one spare page anyway. */Hmm, 2 pages plus one spare doesn't yield ...+static char early_pt[4][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));... 4. Was 2 a typo, and 3 was meant? (Which, just to mention it, then isn't correct for 32-bit aiui.) Whatever adjustment wants making - happy to do so while committing. Just need to know which way. Then Reviewed-by: Jan Beulich <jbeul...@suse.com>
Thanks. Should have been 3, of course. And even on 32-bit 3 are enough. :-) Juergen
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