Date: Sun, 21 Nov 2010 13:26:55 -0600 From: Alan Cox <alan.l.cox@gmail.com> To: sbruno@freebsd.org Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: 256G Ram Panic Message-ID: <4CE9727F.5050305@gmail.com> In-Reply-To: <1290359006.16558.787.camel@home-yahoo> References: <1290359006.16558.787.camel@home-yahoo>
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[-- Attachment #1 --] Sean Bruno wrote: > http://people.freebsd.org/~sbruno/256G_SMAP.png > http://people.freebsd.org/~sbruno/256G_panic1.png > http://people.freebsd.org/~sbruno/256G_panic2.png > > > Trying to get the HP DL980 online today and I see the following panic on > startup from the installer CD that I created from -CURRENT. > Try the attached patch. [-- Attachment #2 --] Index: amd64/include/pmap.h =================================================================== --- amd64/include/pmap.h (revision 215639) +++ amd64/include/pmap.h (working copy) @@ -125,7 +125,7 @@ #define NUPDPE (NUPML4E*NPDPEPG)/* number of userland PDP pages */ #define NUPDE (NUPDPE*NPDEPG) /* number of userland PD entries */ -#define NDMPML4E 1 /* number of dmap PML4 slots */ +#define NDMPML4E 2 /* number of dmap PML4 slots */ /* * The *PDI values control the layout of virtual memory @@ -133,7 +133,7 @@ #define PML4PML4I (NPML4EPG/2) /* Index of recursive pml4 mapping */ #define KPML4I (NPML4EPG-1) /* Top 512GB for KVM */ -#define DMPML4I (KPML4I-1) /* Next 512GB down for direct map */ +#define DMPML4I (KPML4I-3) /* Next 512GB down for direct map */ #define KPDPI (NPDPEPG-2) /* kernbase at -2GB */ Index: amd64/include/vmparam.h =================================================================== --- amd64/include/vmparam.h (revision 215639) +++ amd64/include/vmparam.h (working copy) @@ -176,7 +176,7 @@ #define VM_MIN_KERNEL_ADDRESS KVADDR(KPML4I, NPDPEPG-512, 0, 0) #define DMAP_MIN_ADDRESS KVADDR(DMPML4I, 0, 0, 0) -#define DMAP_MAX_ADDRESS KVADDR(DMPML4I+1, 0, 0, 0) +#define DMAP_MAX_ADDRESS KVADDR(DMPML4I+2, 0, 0, 0) #define KERNBASE KVADDR(KPML4I, KPDPI, 0, 0) Index: amd64/amd64/pmap.c =================================================================== --- amd64/amd64/pmap.c (revision 215639) +++ amd64/amd64/pmap.c (working copy) @@ -530,6 +530,8 @@ create_pagetables(vm_paddr_t *firstaddr) /* Connect the Direct Map slot up to the PML4 */ ((pdp_entry_t *)KPML4phys)[DMPML4I] = DMPDPphys; ((pdp_entry_t *)KPML4phys)[DMPML4I] |= PG_RW | PG_V | PG_U; + ((pdp_entry_t *)KPML4phys)[DMPML4I + 1] = DMPDPphys + PAGE_SIZE; + ((pdp_entry_t *)KPML4phys)[DMPML4I + 1] |= PG_RW | PG_V | PG_U; /* Connect the KVA slot up to the PML4 */ ((pdp_entry_t *)KPML4phys)[KPML4I] = KPDPphys; @@ -1620,6 +1622,7 @@ pmap_pinit(pmap_t pmap) /* Wire in kernel global address entries. */ pmap->pm_pml4[KPML4I] = KPDPphys | PG_RW | PG_V | PG_U; pmap->pm_pml4[DMPML4I] = DMPDPphys | PG_RW | PG_V | PG_U; + pmap->pm_pml4[DMPML4I + 1] = (DMPDPphys + PAGE_SIZE) | PG_RW | PG_V | PG_U; /* install self-referential address mapping entry(s) */ pmap->pm_pml4[PML4PML4I] = VM_PAGE_TO_PHYS(pml4pg) | PG_V | PG_RW | PG_A | PG_M; @@ -1879,6 +1882,7 @@ pmap_release(pmap_t pmap) pmap->pm_pml4[KPML4I] = 0; /* KVA */ pmap->pm_pml4[DMPML4I] = 0; /* Direct Map */ + pmap->pm_pml4[DMPML4I + 1] = 0; /* Direct Map */ pmap->pm_pml4[PML4PML4I] = 0; /* Recursive Mapping */ m->wire_count--;help
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