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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-02-09 00:43:11 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2024-02-09 00:43:41 +0100 |
| commit | e37594f2bf23d2c02e201452fc2911453e5f21b7 (patch) | |
| tree | b92be98f39f6716958b166ee5ec2a542b1f090a6 /i386/i386at/biosmem.c | |
| parent | 274626ed5398db8e44dc995078dbd00e2aa0c1b0 (diff) | |
| download | gnumach-e37594f2bf23d2c02e201452fc2911453e5f21b7.tar.gz gnumach-e37594f2bf23d2c02e201452fc2911453e5f21b7.tar.bz2 gnumach-e37594f2bf23d2c02e201452fc2911453e5f21b7.zip | |
SMP: Fix allocating the apboot page
vm_page_grab_contig does not necessarily allocate at the beginning of
the DMA segment, so rather allocate by hand very early.
Diffstat (limited to 'i386/i386at/biosmem.c')
| -rw-r--r-- | i386/i386at/biosmem.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/i386/i386at/biosmem.c b/i386/i386at/biosmem.c index 03736af3..937c0e3d 100644 --- a/i386/i386at/biosmem.c +++ b/i386/i386at/biosmem.c @@ -689,6 +689,15 @@ biosmem_bootstrap_common(void) if (error) boot_panic(biosmem_panic_noseg_msg); +#if !defined(MACH_HYP) && NCPUS > 1 + /* + * Grab an early page for AP boot code which needs to be below 1MB. + */ + assert (phys_start < 0x100000); + apboot_addr = phys_start; + phys_start += PAGE_SIZE; +#endif + biosmem_set_segment(VM_PAGE_SEG_DMA, phys_start, phys_end); phys_start = VM_PAGE_DMA_LIMIT; |