- 23 11月, 2016 1 次提交
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由 Paul Mackerras 提交于
POWER9 requires the host to set up a partition table, which is a table in memory indexed by logical partition ID (LPID) which contains the pointers to page tables and process tables for the host and each guest. This factors out the initialization of the partition table into a single function. This code was previously duplicated between hash_utils_64.c and pgtable-radix.c. This provides a function for setting a partition table entry, which is used in early MMU initialization, and will be used by KVM whenever a guest is created. This function includes a tlbie instruction which will flush all TLB entries for the LPID and all caches of the partition table entry for the LPID, across the system. This also moves a call to memblock_set_current_limit(), which was in radix_init_partition_table(), but has nothing to do with the partition table. By analogy with the similar code for hash, the call gets moved to near the end of radix__early_init_mmu(). It now gets called when running as a guest, whereas previously it would only be called if the kernel is running as the host. Signed-off-by: NPaul Mackerras <paulus@ozlabs.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 23 9月, 2016 1 次提交
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由 Benjamin Herrenschmidt 提交于
Just using the hash ops won't work anymore since radix will have NULL in there. Instead create an mmu_cleanup_all() function which will do the right thing based on the MMU mode. For Radix, for now I clear UPRT and the PTCR, effectively switching back to Radix with no partition table setup. Currently set it to NULL on BookE thought it might be a good idea to wipe the TLB there (Scott ?) Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: NBalbir Singh <bsingharora@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 13 9月, 2016 1 次提交
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由 Aneesh Kumar K.V 提交于
Power9 DD1 requires to update the hid0 register when switching from hash to radix. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: NMichael Neuling <mikey@neuling.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 04 8月, 2016 1 次提交
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由 Michael Ellerman 提交于
We want to initialise register_process_table() before ppc_md is setup, so that it can be called as part of MMU init (at least on Radix ATM). That no longer works because probe_machine() requires that ppc_md be empty before it's called, and we now do probe_machine() much later. So make register_process_table a global for now. It will probably move into a mmu_radix_ops struct at some point in the future. This was broken by me when applying commit 7025776e "powerpc/mm: Move hash table ops to a separate structure" due to conflicts with other patches. Fixes: 7025776e ("powerpc/mm: Move hash table ops to a separate structure") Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 01 8月, 2016 1 次提交
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由 Michael Ellerman 提交于
Like we just did for hash, split the device tree scanning parts out and call them from mmu_early_init_devtree(). Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 21 7月, 2016 1 次提交
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由 Benjamin Herrenschmidt 提交于
We move it into early_mmu_init() based on firmware features. For PS3, we have to move the setting of these into early_init_devtree(). Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 17 7月, 2016 3 次提交
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由 Aneesh Kumar K.V 提交于
This update the machine dep callback such that we can use the same callback to register process table. The interface is updated such that we can easily call H_REGISTER_PROC_TBL hcall. The HCALL itself is introduced in a later patch. No functionality change introduced by this patch. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
This helps in easily identifying the MMU mode with which the kernel is operating. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
PowerISA 3.0 requires the MMU mode (radix vs. hash) of the hypervisor to be mirrored in the LPCR register, in addition to the partition table. This is done to avoid fetching from the table when deciding, among other things, how to perform transitions to HV mode on some interrupts. So let's set it up appropriately Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: NBalbir Singh <bsingharora@gmail.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 30 6月, 2016 1 次提交
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由 Darren Stevens 提交于
Commit d6a9996e ("powerpc/mm: vmalloc abstraction in preparation for radix") turned kernel memory and IO addresses from #defined constants to variables initialised at runtime. On PA6T (pasemi) systems the setup_arch() machine call initialises the onboard PCI-e root-ports, and uses pci_io_base to do this, which is now before its value has been set, resulting in a panic early in boot before console IO is initialised. Move the pci_io_base initialisation to the same place as vmalloc ranges are set (hash__early_init_mmu()/radix__early_init_mmu()) - this is the earliest possible place we can initialise it. Fixes: d6a9996e ("powerpc/mm: vmalloc abstraction in preparation for radix") Reported-by: NChristian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: NDarren Stevens <darren@stevens-zone.net> Reviewed-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [mpe: Add #ifdef CONFIG_PCI, massage change log slightly] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 17 6月, 2016 1 次提交
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由 Aneesh Kumar K.V 提交于
ISA 3.0 updated it to be encoded as Radix tree size = 2^(RTS + 31). We have it encoded as 2^(RTS + 28). Add a helper with the correct encoding and use it instead of opencoding. Fixes: 2bfd65e4 ("powerpc/mm/radix: Add radix callbacks for early init routines") Reviewed-by: NBalbir Singh <bsingharora@gmail.com> Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 01 6月, 2016 1 次提交
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由 Aneesh Kumar K.V 提交于
LPCR cannot be updated when running in guest mode. Fixes: 2bfd65e4 ("powerpc/mm/radix: Add radix callbacks for early init routines") Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 11 5月, 2016 5 次提交
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由 Aneesh Kumar K.V 提交于
The deposited pgtable_t is a pte fragment hence we cannot use page->lru for linking then together. We use the first two 64 bits for pte fragment as list_head type to link all deposited fragments together. On withdraw we properly zero then out. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
In this patch we make the number of pte fragments per level 4 page table page a variable. Radix level 4 table size is 256 bytes and hence we can have 256 fragments per level 4 page. We don't update the fragment count in this patch. We need to do performance measurements to find the right value for fragment count. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
The vmalloc range differs between hash and radix config. Hence make VMALLOC_START and related constants a variable which will be runtime initialized depending on whether hash or radix mode is active. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> [mpe: Fix missing init of ioremap_bot in pgtable_64.c for ppc64e] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
On return from RTAS we access the paca variables and we have 64 bit disabled. This requires us to limit paca in 32 bit range. Fix this by setting ppc64_rma_size to first_memblock_size/1G range. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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- 01 5月, 2016 2 次提交
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由 Aneesh Kumar K.V 提交于
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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由 Aneesh Kumar K.V 提交于
This adds routines for early setup for radix. We use device tree property "ibm,processor-radix-AP-encodings" to find supported page sizes. If we don't find the above we consider 64K and 4K as supported page sizes. We do map vmemap using 2M page size if we can. The linear mapping is done such that we use required page size for that range. For example memory of 3.5G is mapped such that we use 1G mapping till 3G range and use 2M mapping for the rest. Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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