From f472f53bdf80c17f3b97feaca9d623b57945653f Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sun, 14 Sep 2025 21:05:47 -0400 Subject: kern/amd64: mmu: Use CR4 not CR0 for CR4.L57 Signed-off-by: Ian Moffett --- src/sys/arch/amd64/cpu/mmu.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'src/sys') diff --git a/src/sys/arch/amd64/cpu/mmu.c b/src/sys/arch/amd64/cpu/mmu.c index e61e0b0..25fca35 100644 --- a/src/sys/arch/amd64/cpu/mmu.c +++ b/src/sys/arch/amd64/cpu/mmu.c @@ -146,16 +146,16 @@ __mmu_read_cr3(void) static inline pglvl_t mmu_pg_level(void) { - uint64_t cr0; + uint64_t cr4; __ASMV( - "mov %%cr0, %0" - : "=r" (cr0) + "mov %%cr4, %0" + : "=r" (cr4) : : "memory" ); - if (ISSET(cr0, CR4_L5_PAGING)) { + if (ISSET(cr4, CR4_L5_PAGING)) { return MMU_L5; } -- cgit v1.2.3