Paul Mackerras <pau...@samba.org> writes: > On Tue, Mar 12, 2013 at 05:38:50PM +0530, Aneesh Kumar K.V wrote: >> From: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com> >> >> This patch change the kernel VSID range so that we limit VSID_BITS to 37. >> This enables us to support 64TB with 65 bit VA (37+28). Without this patch >> we have boot hangs on platforms that only support 65 bit VA. >> >> With this patch we now have proto vsid generated as below: >> >> We first generate a 37-bit "proto-VSID". Proto-VSIDs are generated >> from mmu context id and effective segment id of the address. >> >> For user processes max context id is limited to ((1ul << 19) - 5) >> for kernel space, we use the top 4 context ids to map address as below >> 0x7fffc - [ 0xc000000000000000 - 0xc0003fffffffffff ] >> 0x7fffd - [ 0xd000000000000000 - 0xd0003fffffffffff ] >> 0x7fffe - [ 0xe000000000000000 - 0xe0003fffffffffff ] >> 0x7ffff - [ 0xf000000000000000 - 0xf0003fffffffffff ] >> >> Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com> > > Mostly looks OK, and it could go in as is, so > > Acked-by: Paul Mackerras <pau...@samba.org> > > Some minor comments below... > >> + * For user processes max context id is limited to ((1ul << 19) - 6) > > should be ((1ul << 19) - 5)
I update the commit message but missed updating this. Ben, Let me know if you want me to send V4 to take care of these review feedbacks. -aneesh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
