From 341acbb3aabbcfbf069d7de4ad35f51b58176faf Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 16 Jun 2014 00:17:07 +0530 Subject: KVM: PPC: BOOK3S: HV: Use base page size when comparing against slb value With guests supporting Multiple page size per segment (MPSS), hpte_page_size returns the actual page size used. Add a new function to return base page size and use that to compare against the the page size calculated from SLB. Without this patch a hpte lookup can fail since we are comparing wrong page size in kvmppc_hv_find_lock_hpte. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf --- arch/powerpc/include/asm/kvm_book3s_64.h | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/include') diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index fddb72b48ce..d645428a65a 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -198,8 +198,10 @@ static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r, return rb; } -static inline unsigned long hpte_page_size(unsigned long h, unsigned long l) +static inline unsigned long __hpte_page_size(unsigned long h, unsigned long l, + bool is_base_size) { + int size, a_psize; /* Look at the 8 bit LP value */ unsigned int lp = (l >> LP_SHIFT) & ((1 << LP_BITS) - 1); @@ -214,14 +216,27 @@ static inline unsigned long hpte_page_size(unsigned long h, unsigned long l) continue; a_psize = __hpte_actual_psize(lp, size); - if (a_psize != -1) + if (a_psize != -1) { + if (is_base_size) + return 1ul << mmu_psize_defs[size].shift; return 1ul << mmu_psize_defs[a_psize].shift; + } } } return 0; } +static inline unsigned long hpte_page_size(unsigned long h, unsigned long l) +{ + return __hpte_page_size(h, l, 0); +} + +static inline unsigned long hpte_base_page_size(unsigned long h, unsigned long l) +{ + return __hpte_page_size(h, l, 1); +} + static inline unsigned long hpte_rpn(unsigned long ptel, unsigned long psize) { return ((ptel & HPTE_R_RPN) & ~(psize - 1)) >> PAGE_SHIFT; -- cgit v1.2.3-70-g09d2 From 9715a2e8515217206ebf53040c979fdbeb805a21 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 26 Jun 2014 13:19:40 +0200 Subject: PPC: Add _GLOBAL_TOC for 32bit Commit ac5a8ee8 started using _GLOBAL_TOC on ppc32 code. Unfortunately it's only defined for 64bit targets though. Define it for ppc32 as well, fixing the build breakage that commit introduced. Signed-off-by: Alexander Graf --- arch/powerpc/include/asm/ppc_asm.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/powerpc/include') diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index 9ea266eae33..7e461252854 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -277,6 +277,8 @@ n: .globl n; \ n: +#define _GLOBAL_TOC(name) _GLOBAL(name) + #define _KPROBE(n) \ .section ".kprobes.text","a"; \ .globl n; \ -- cgit v1.2.3-70-g09d2