OpenCloudOS-Kernel/arch/powerpc
Paul Mackerras 8dc6cca556 KVM: PPC: Book3S HV: Don't rely on host's page size information
This removes the dependence of KVM on the mmu_psize_defs array (which
stores information about hardware support for various page sizes) and
the things derived from it, chiefly hpte_page_sizes[], hpte_page_size(),
hpte_actual_page_size() and get_sllp_encoding().  We also no longer
rely on the mmu_slb_size variable or the MMU_FTR_1T_SEGMENTS feature
bit.

The reason for doing this is so we can support a HPT guest on a radix
host.  In a radix host, the mmu_psize_defs array contains information
about page sizes supported by the MMU in radix mode rather than the
page sizes supported by the MMU in HPT mode.  Similarly, mmu_slb_size
and the MMU_FTR_1T_SEGMENTS bit are not set.

Instead we hard-code knowledge of the behaviour of the HPT MMU in the
POWER7, POWER8 and POWER9 processors (which are the only processors
supported by HV KVM) - specifically the encoding of the LP fields in
the HPT and SLB entries, and the fact that they have 32 SLB entries
and support 1TB segments.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
2017-11-01 15:36:06 +11:00
..
boot powerpc: conditionally compile platform-specific serial drivers 2017-08-31 14:26:48 +10:00
configs powerpc/configs: Update for CONFIG_SND changes 2017-09-20 13:30:09 +10:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
include KVM: PPC: Book3S HV: Don't rely on host's page size information 2017-11-01 15:36:06 +11:00
kernel Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next 2017-11-01 15:33:39 +11:00
kvm KVM: PPC: Book3S HV: Don't rely on host's page size information 2017-11-01 15:36:06 +11:00
lib powerpc/sstep: mullw should calculate a 64 bit signed result 2017-09-20 13:30:09 +10:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm powerpc/mm: Call flush_tlb_kernel_range with interrupts enabled 2017-10-04 22:15:30 +11:00
net powerpc updates for 4.14 2017-09-07 10:15:40 -07:00
oprofile ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
perf powerpc/sysrq: Fix oops whem ppmu is not registered 2017-09-20 13:30:09 +10:00
platforms powerpc/powernv: Increase memory block size to 1GB on radix 2017-10-06 15:50:45 +11:00
purgatory powerpc/asm: Convert .llong directives to .8byte 2017-08-31 14:26:47 +10:00
sysdev powerpc fixes for 4.14 #4 2017-10-06 08:47:21 -07:00
tools powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00
xmon powerpc/xmon: Add ISA v3.0 SPRs to SPR dump 2017-08-31 14:26:45 +10:00
Kconfig powerpc updates for 4.14 2017-09-07 10:15:40 -07:00
Kconfig.debug powerpc/xmon: Enable disassembly files (compilation changes) 2017-02-15 20:02:42 +11:00
Makefile Merge branch 'fixes' into next 2017-08-23 22:20:10 +10:00
Makefile.postlink powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00