On Fri, May 03, 2019 at 03:53:10PM +1000, Suraj Jitindar Singh wrote:
> Radix tree translation is a 2 step process:
>
> Process Scoped Translation:
> Effective Address (EA) -> Virtual Address (VA)
>
> Paritition Scoped Translation:
> Virtual Address (VA) -> Real Address (RA)
>
> Performed based on:
> MSR[HV]
> -----------------------------------------------
> | | HV = 0 | HV = 1 |
> -----------------------------------------------
> | Relocation | Partition | No |
> | = Off | Scoped | Translation |
> Relocation -----------------------------------------------
> | Relocation | Partition & | Process |
> | = On |Process Scoped | Scoped |
> -----------------------------------------------
>
> Currently only process scoped translation is handled.
> Implement partitition scoped translation.
>
> The process of using the radix trees to perform partition scoped
> translation is identical to process scoped translation, however
> hypervisor exceptions are generated, and thus we can reuse the radix
> tree traversing code.
>
> Signed-off-by: Suraj Jitindar Singh <sjitindarsi...@gmail.com>
> ---
> target/ppc/cpu.h | 2 +
> target/ppc/excp_helper.c | 3 +-
> target/ppc/mmu-radix64.c | 407
> +++++++++++++++++++++++++++++++++--------------
> 3 files changed, 293 insertions(+), 119 deletions(-)
>
> diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
> index 1d2a088391..3acc248f40 100644
> --- a/target/ppc/cpu.h
> +++ b/target/ppc/cpu.h
> @@ -501,6 +501,8 @@ typedef struct ppc_v3_pate_t {
> /* Unsupported Radix Tree Configuration */
> #define DSISR_R_BADCONFIG 0x00080000
> #define DSISR_ATOMIC_RC 0x00040000
> +/* Unable to translate address of (guest) pde or process/page table entry */
> +#define DSISR_PRTABLE_FAULT 0x00020000
>
> /* SRR1 error code fields */
>
> diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
> index 7a4da7bdba..10091d4624 100644
> --- a/target/ppc/excp_helper.c
> +++ b/target/ppc/excp_helper.c
> @@ -441,9 +441,10 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int
> excp_model, int excp)
> case POWERPC_EXCP_ISEG: /* Instruction segment exception
> */
> case POWERPC_EXCP_TRACE: /* Trace exception
> */
> break;
> + case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception
> */
> + msr |= env->error_code;
> case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception
> */
> case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception
> */
> - case POWERPC_EXCP_HISI: /* Hypervisor instruction storage exception
> */
> case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception
> */
> case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment exception
> */
> case POWERPC_EXCP_SDOOR_HV: /* Hypervisor Doorbell interrupt
> */
> diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c
> index afa5ba506a..6118ad1b00 100644
> --- a/target/ppc/mmu-radix64.c
> +++ b/target/ppc/mmu-radix64.c
> @@ -112,9 +112,31 @@ static void ppc_radix64_raise_si(PowerPCCPU *cpu, int
> rwx, vaddr eaddr,
> }
> }
>
> +static void ppc_radix64_raise_hsi(PowerPCCPU *cpu, int rwx, vaddr eaddr,
> + hwaddr g_raddr, uint32_t cause)
> +{
> + CPUState *cs = CPU(cpu);
> + CPUPPCState *env = &cpu->env;
> +
> + if (rwx == 2) { /* H Instruction Storage Interrupt */
> + cs->exception_index = POWERPC_EXCP_HISI;
> + env->spr[SPR_ASDR] = g_raddr;
> + env->error_code = cause;
> + } else { /* H Data Storage Interrupt */
> + cs->exception_index = POWERPC_EXCP_HDSI;
> + if (rwx == 1) { /* Write -> Store */
> + cause |= DSISR_ISSTORE;
> + }
> + env->spr[SPR_HDSISR] = cause;
> + env->spr[SPR_HDAR] = eaddr;
> + env->spr[SPR_ASDR] = g_raddr;
> + env->error_code = 0;
> + }
> +}
>
> static bool ppc_radix64_check_prot(PowerPCCPU *cpu, int rwx, uint64_t pte,
> - int *fault_cause, int *prot)
> + int *fault_cause, int *prot,
> + bool partition_scoped)
> {
> CPUPPCState *env = &cpu->env;
> const int need_prot[] = { PAGE_READ, PAGE_WRITE, PAGE_EXEC };
> @@ -130,11 +152,11 @@ static bool ppc_radix64_check_prot(PowerPCCPU *cpu, int
> rwx, uint64_t pte,
> }
>
> /* Determine permissions allowed by Encoded Access Authority */
> - if ((pte & R_PTE_EAA_PRIV) && msr_pr) { /* Insufficient Privilege */
> + if (!partition_scoped && (pte & R_PTE_EAA_PRIV) && msr_pr) {
> *prot = 0;
> - } else if (msr_pr || (pte & R_PTE_EAA_PRIV)) {
> + } else if (msr_pr || (pte & R_PTE_EAA_PRIV) || partition_scoped) {
> *prot = ppc_radix64_get_prot_eaa(pte);
> - } else { /* !msr_pr && !(pte & R_PTE_EAA_PRIV) */
> + } else { /* !msr_pr && !(pte & R_PTE_EAA_PRIV) && !partition_scoped */
> *prot = ppc_radix64_get_prot_eaa(pte);
> *prot &= ppc_radix64_get_prot_amr(cpu); /* Least combined
> permissions */
> }
> @@ -199,44 +221,196 @@ static uint64_t ppc_radix64_set_rc(PowerPCCPU *cpu,
> int rwx, uint64_t pte, hwadd
> return npte;
> }
>
> -static uint64_t ppc_radix64_walk_tree(PowerPCCPU *cpu, vaddr eaddr,
> - uint64_t base_addr, uint64_t nls,
> - hwaddr *raddr, int *psize,
> - int *fault_cause, hwaddr *pte_addr)
> +static uint64_t ppc_radix64_next_level(PowerPCCPU *cpu, vaddr eaddr,
> + uint64_t *pte_addr, uint64_t *nls,
> + int *psize, int *fault_cause)
> {
> CPUState *cs = CPU(cpu);
> uint64_t index, pde;
>
> - if (nls < 5) { /* Directory maps less than 2**5 entries */
> + if (*nls < 5) { /* Directory maps less than 2**5 entries */
> *fault_cause |= DSISR_R_BADCONFIG;
> return 0;
> }
>
> /* Read page <directory/table> entry from guest address space */
> - index = eaddr >> (*psize - nls); /* Shift */
> - index &= ((1UL << nls) - 1); /* Mask */
> - pde = ldq_phys(cs->as, base_addr + (index * sizeof(pde)));
> - if (!(pde & R_PTE_VALID)) { /* Invalid Entry */
> + pde = ldq_phys(cs->as, *pte_addr);
> + if (!(pde & R_PTE_VALID)) { /* Invalid Entry */
> *fault_cause |= DSISR_NOPTE;
> return 0;
> }
>
> - *psize -= nls;
> + *psize -= *nls;
> + if (!(pde & R_PTE_LEAF)) { /* Prepare for next iteration */
> + *nls = pde & R_PDE_NLS;
> + index = eaddr >> (*psize - *nls); /* Shift */
> + index &= ((1UL << *nls) - 1); /* Mask */
> + *pte_addr = (pde & R_PDE_NLB) + (index * sizeof(pde));
> + }
> + return pde;
> +}
> +
> +static uint64_t ppc_radix64_walk_tree(PowerPCCPU *cpu, vaddr eaddr,
> + uint64_t base_addr, uint64_t nls,
> + hwaddr *raddr, int *psize,
> + int *fault_cause, hwaddr *pte_addr)
> +{
> + uint64_t index, pde;
> +
> + index = eaddr >> (*psize - nls); /* Shift */
> + index &= ((1UL << nls) - 1); /* Mask */
> + *pte_addr = base_addr + (index * sizeof(pde));
> + do {
> + pde = ppc_radix64_next_level(cpu, eaddr, pte_addr, &nls, psize,
> + fault_cause);
> + } while ((pde & R_PTE_VALID) && !(pde & R_PTE_LEAF));
>
> - /* Check if Leaf Entry -> Page Table Entry -> Stop the Search */
> - if (pde & R_PTE_LEAF) {
> + /* Did we find a valid leaf? */
> + if ((pde & R_PTE_VALID) && (pde & R_PTE_LEAF)) {
> uint64_t rpn = pde & R_PTE_RPN;
> uint64_t mask = (1UL << *psize) - 1;
>
> /* Or high bits of rpn and low bits to ea to form whole real addr */
> *raddr = (rpn & ~mask) | (eaddr & mask);
> - *pte_addr = base_addr + (index * sizeof(pde));
> - return pde;
> }
>
> - /* Next Level of Radix Tree */
> - return ppc_radix64_walk_tree(cpu, eaddr, pde & R_PDE_NLB, pde &
> R_PDE_NLS,
> - raddr, psize, fault_cause, pte_addr);
> + return pde;
> +}
> +
> +static int ppc_radix64_partition_scoped_xlate(PowerPCCPU *cpu, int rwx,
> + vaddr eaddr, hwaddr g_raddr,
> + ppc_v3_pate_t pate,
> + hwaddr *h_raddr, int *h_prot,
> + int *h_page_size, bool
> pde_addr,
> + bool cause_excp)
> +{
> + CPUPPCState *env = &cpu->env;
> + int fault_cause = 0;
> + hwaddr pte_addr;
> + uint64_t pte;
> +
> +restart:
> + *h_page_size = PRTBE_R_GET_RTS(pate.dw0);
> + pte = ppc_radix64_walk_tree(cpu, g_raddr, pate.dw0 & PRTBE_R_RPDB,
> + pate.dw0 & PRTBE_R_RPDS, h_raddr,
> h_page_size,
> + &fault_cause, &pte_addr);
> + /* No valid pte or access denied due to protection */
> + if (!(pte & R_PTE_VALID) ||
> + ppc_radix64_check_prot(cpu, rwx, pte, &fault_cause, h_prot, 1)) {
> + if (pde_addr) /* address being translated was that of a guest pde */
> + fault_cause |= DSISR_PRTABLE_FAULT;
> + if (cause_excp)
> + ppc_radix64_raise_hsi(cpu, rwx, eaddr, g_raddr, fault_cause);
> + return 1;
> + }
> +
> + /* Update Reference and Change Bits */
> + if (ppc_radix64_hw_rc_updates(env)) {
> + pte = ppc_radix64_set_rc(cpu, rwx, pte, pte_addr);
> + if (!pte) {
> + goto restart;
> + }
> + }
> +
> + /* If the page doesn't have C, treat it as read only */
> + if (!(pte & R_PTE_C))
> + *h_prot &= ~PAGE_WRITE;
> +
> + return 0;
> +}
> +
> +static int ppc_radix64_process_scoped_xlate(PowerPCCPU *cpu, int rwx,
> + vaddr eaddr, uint64_t lpid,
> uint64_t pid,
> + ppc_v3_pate_t pate, hwaddr
> *g_raddr,
> + int *g_prot, int *g_page_size,
> + bool cause_excp)
> +{
> + CPUState *cs = CPU(cpu);
> + CPUPPCState *env = &cpu->env;
> + uint64_t offset, size, prtbe_addr, prtbe0, base_addr, nls, index, pte;
> + int fault_cause = 0, h_page_size, h_prot, ret;
> + hwaddr h_raddr, pte_addr;
> +
> + /* Index Process Table by PID to Find Corresponding Process Table Entry
> */
> + offset = pid * sizeof(struct prtb_entry);
> + size = 1ULL << ((pate.dw1 & PATE1_R_PRTS) + 12);
> + if (offset >= size) {
> + /* offset exceeds size of the process table */
> + if (cause_excp)
> + ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_NOPTE);
> + return 1;
> + }
> + prtbe_addr = (pate.dw1 & PATE1_R_PRTB) + offset;
> + /* address subject to partition scoped translation */
> + if (cpu->vhyp && (lpid == 0)) {
> + prtbe0 = ldq_phys(cs->as, prtbe_addr);
> + } else {
> + ret = ppc_radix64_partition_scoped_xlate(cpu, 0, eaddr, prtbe_addr,
> + pate, &h_raddr, &h_prot,
> + &h_page_size, 1, 1);
> + if (ret)
> + return ret;
> + prtbe0 = ldq_phys(cs->as, h_raddr);
> + }
> +
> + /* Walk Radix Tree from Process Table Entry to Convert EA to RA */
> +restart:
> + *g_page_size = PRTBE_R_GET_RTS(prtbe0);
> + base_addr = prtbe0 & PRTBE_R_RPDB;
> + nls = prtbe0 & PRTBE_R_RPDS;
> + if (msr_hv || (cpu->vhyp && (lpid == 0))) {
> + /* Can treat process tree addresses as real addresses */
> + pte = ppc_radix64_walk_tree(cpu, eaddr & R_EADDR_MASK, base_addr,
> nls,
> + g_raddr, g_page_size, &fault_cause,
> + &pte_addr);
> + } else {
> + index = (eaddr & R_EADDR_MASK) >> (*g_page_size - nls); /* Shift */
> + index &= ((1UL << nls) - 1); /* Mask */
> + pte_addr = base_addr + (index * sizeof(pte));
> +
> + /* Each process tree address subject to partition scoped translation
> */
> + do {
> + ret = ppc_radix64_partition_scoped_xlate(cpu, 0, eaddr, pte_addr,
> + pate, &h_raddr, &h_prot,
> + &h_page_size, 1, 1);
> + if (ret)
> + return ret;
> +
> + pte = ppc_radix64_next_level(cpu, eaddr & R_EADDR_MASK, &h_raddr,
> + &nls, g_page_size, &fault_cause);
> + pte_addr = h_raddr;
> + } while ((pte & R_PTE_VALID) && !(pte & R_PTE_LEAF));
> +
> + /* Did we find a valid leaf? */
> + if ((pte & R_PTE_VALID) && (pte & R_PTE_LEAF)) {
> + uint64_t rpn = pte & R_PTE_RPN;
> + uint64_t mask = (1UL << *g_page_size) - 1;
> +
> + /* Or high bits of rpn and low bits to ea to form whole real
> addr */
> + *g_raddr = (rpn & ~mask) | (eaddr & mask);
> + }
> + }
> +
> + if (!(pte & R_PTE_VALID) ||
> + ppc_radix64_check_prot(cpu, rwx, pte, &fault_cause, g_prot, 0)) {
> + /* No valid pte or access denied due to protection */
> + if (cause_excp)
> + ppc_radix64_raise_si(cpu, rwx, eaddr, fault_cause);
> + return 1;
> + }
> +
> + /* Update Reference and Change Bits */
> + if (ppc_radix64_hw_rc_updates(env)) {
> + pte = ppc_radix64_set_rc(cpu, rwx, pte, pte_addr);
> + if (!pte)
> + goto restart;
> + }
> +
> + /* If the page doesn't have C, treat it as read only */
> + if (!(pte & R_PTE_C))
> + *g_prot &= ~PAGE_WRITE;
> +
> + return 0;
> }
>
> static bool validate_pate(PowerPCCPU *cpu, uint64_t lpid, ppc_v3_pate_t
> *pate)
> @@ -255,22 +429,99 @@ static bool validate_pate(PowerPCCPU *cpu, uint64_t
> lpid, ppc_v3_pate_t *pate)
> return true;
> }
>
> +static int ppc_radix64_xlate(PowerPCCPU *cpu, vaddr eaddr, int rwx,
> + uint64_t lpid, uint64_t pid, bool relocation,
> + hwaddr *raddr, int *psizep, int *protp,
> + bool cause_excp)
> +{
> + CPUPPCState *env = &cpu->env;
> + ppc_v3_pate_t pate;
> + int psize, prot;
> + hwaddr g_raddr;
> +
> + *psizep = INT_MAX;
> + *protp = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
> +
> + /* Get Process Table */
> + if (cpu->vhyp && (lpid == 0)) {
> + PPCVirtualHypervisorClass *vhc;
> + vhc = PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
> + vhc->get_pate(cpu->vhyp, &pate);
> + } else {
> + if (!ppc64_v3_get_pate(cpu, lpid, &pate)) {
> + if (cause_excp)
> + ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_NOPTE);
> + return 1;
> + }
> + if (!validate_pate(cpu, lpid, &pate)) {
> + if (cause_excp)
> + ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_R_BADCONFIG);
> + return 1;
> + }
> + }
> +
> + /*
> + * Radix tree translation is a 2 step translation process:
> + * 1. Process Scoped translation - Guest Eff Addr -> Guest Real Addr
> + * 2. Partition Scoped translation - Guest Real Addr -> Host Real Addr
> + *
> + * MSR[HV]
> + * -----------------------------------------------
> + * | | HV = 0 | HV = 1 |
> + * -----------------------------------------------
> + * | Relocation | Partition | No |
> + * | = Off | Scoped | Translation |
> + * Relocation -----------------------------------------------
> + * | Relocation | Partition & | Process |
> + * | = On |Process Scoped | Scoped |
> + * -----------------------------------------------
> + */
> +
> + /* Perform process scoped translation if relocation enabled */
> + if (relocation) {
> + int ret = ppc_radix64_process_scoped_xlate(cpu, rwx, eaddr, lpid,
> pid,
> + pate, &g_raddr, &prot,
> + &psize, cause_excp);
> + if (ret)
> + return ret;
> + *psizep = MIN(*psizep, psize);
> + *protp &= prot;
> + } else {
> + g_raddr = eaddr & R_EADDR_MASK;
> + }
> +
> + /* Perform partition scoped xlate if !HV or HV access to quadrants 1 or
> 2 */
I'm not seeing any test on the quadrant below.
> + if ((lpid != 0) || (!cpu->vhyp && !msr_hv)) {
> + int ret = ppc_radix64_partition_scoped_xlate(cpu, rwx, eaddr,
> g_raddr,
> + pate, raddr, &prot,
> &psize,
> + 0, cause_excp);
> + if (ret)
> + return ret;
> + *psizep = MIN(*psizep, psize);
> + *protp &= prot;
> + } else {
> + *raddr = g_raddr;
> + }
> +
> + return 0;
> +}
> +
> int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr, int rwx,
> int mmu_idx)
> {
> CPUState *cs = CPU(cpu);
> CPUPPCState *env = &cpu->env;
> - PPCVirtualHypervisorClass *vhc;
> - hwaddr raddr, pte_addr;
> - uint64_t lpid = 0, pid = 0, offset, size, prtbe0, pte;
> - int page_size, prot, fault_cause = 0;
> - ppc_v3_pate_t pate;
> + uint64_t pid, lpid = env->spr[SPR_LPIDR];
> + int psize, prot;
> + bool relocation;
> + hwaddr raddr;
>
> + assert(!(msr_hv && cpu->vhyp));
> assert((rwx == 0) || (rwx == 1) || (rwx == 2));
>
> + relocation = ((rwx == 2) && (msr_ir == 1)) || ((rwx != 2) && (msr_dr ==
> 1));
> /* HV or virtual hypervisor Real Mode Access */
> - if ((msr_hv || cpu->vhyp) &&
> - (((rwx == 2) && (msr_ir == 0)) || ((rwx != 2) && (msr_dr == 0)))) {
> + if (!relocation && (msr_hv || (cpu->vhyp && (lpid == 0)))) {
> /* In real mode top 4 effective addr bits (mostly) ignored */
> raddr = eaddr & 0x0FFFFFFFFFFFFFFFULL;
>
> @@ -294,75 +545,26 @@ int ppc_radix64_handle_mmu_fault(PowerPCCPU *cpu, vaddr
> eaddr, int rwx,
> return 1;
> }
>
> - /* Get Process Table */
> - if (cpu->vhyp) {
> - vhc = PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
> - vhc->get_pate(cpu->vhyp, &pate);
> - } else {
> - if (!ppc64_v3_get_pate(cpu, lpid, &pate)) {
> - ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_NOPTE);
> - return 1;
> - }
> - if (!validate_pate(cpu, lpid, &pate)) {
> - ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_R_BADCONFIG);
> - }
> - /* We don't support guest mode yet */
> - if (lpid != 0) {
> - error_report("PowerNV guest support Unimplemented");
> - exit(1);
> - }
> - }
> -
> - /* Index Process Table by PID to Find Corresponding Process Table Entry
> */
> - offset = pid * sizeof(struct prtb_entry);
> - size = 1ULL << ((pate.dw1 & PATE1_R_PRTS) + 12);
> - if (offset >= size) {
> - /* offset exceeds size of the process table */
> - ppc_radix64_raise_si(cpu, rwx, eaddr, DSISR_NOPTE);
> - return 1;
> - }
> - prtbe0 = ldq_phys(cs->as, (pate.dw1 & PATE1_R_PRTB) + offset);
> -
> - /* Walk Radix Tree from Process Table Entry to Convert EA to RA */
> - page_size = PRTBE_R_GET_RTS(prtbe0);
> - restart:
> - pte = ppc_radix64_walk_tree(cpu, eaddr & R_EADDR_MASK,
> - prtbe0 & PRTBE_R_RPDB, prtbe0 & PRTBE_R_RPDS,
> - &raddr, &page_size, &fault_cause, &pte_addr);
> - if (!pte || ppc_radix64_check_prot(cpu, rwx, pte, &fault_cause, &prot)) {
> - /* Couldn't get pte or access denied due to protection */
> - ppc_radix64_raise_si(cpu, rwx, eaddr, fault_cause);
> + /* Translate eaddr to raddr (where raddr is addr qemu needs for access)
> */
> + if (ppc_radix64_xlate(cpu, eaddr, rwx, lpid, pid, relocation, &raddr,
> + &psize, &prot, 1)) {
> return 1;
> }
>
> - /* Update Reference and Change Bits */
> - if (ppc_radix64_hw_rc_updates(env)) {
> - pte = ppc_radix64_set_rc(cpu, rwx, pte, pte_addr);
> - if (!pte) {
> - goto restart;
> - }
> - }
> - /* If the page doesn't have C, treat it as read only */
> - if (!(pte & R_PTE_C)) {
> - prot &= ~PAGE_WRITE;
> - }
> tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK,
> - prot, mmu_idx, 1UL << page_size);
> + prot, mmu_idx, 1UL << psize);
> return 0;
> }
>
> hwaddr ppc_radix64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong eaddr)
> {
> - CPUState *cs = CPU(cpu);
> CPUPPCState *env = &cpu->env;
> - PPCVirtualHypervisorClass *vhc;
> - hwaddr raddr, pte_addr;
> - uint64_t lpid = 0, pid = 0, offset, size, prtbe0, pte;
> - int page_size, fault_cause = 0;
> - ppc_v3_pate_t pate;
> + uint64_t lpid = 0, pid = 0;
> + int psize, prot;
> + hwaddr raddr;
>
> /* Handle Real Mode */
> - if (msr_dr == 0) {
> + if ((msr_dr == 0) && (msr_hv || (cpu->vhyp && (lpid == 0)))) {
> /* In real mode top 4 effective addr bits (mostly) ignored */
> return eaddr & 0x0FFFFFFFFFFFFFFFULL;
> }
> @@ -372,39 +574,8 @@ hwaddr ppc_radix64_get_phys_page_debug(PowerPCCPU *cpu,
> target_ulong eaddr)
> return -1;
> }
>
> - /* Get Process Table */
> - if (cpu->vhyp) {
> - vhc = PPC_VIRTUAL_HYPERVISOR_GET_CLASS(cpu->vhyp);
> - vhc->get_pate(cpu->vhyp, &pate);
> - } else {
> - if (!ppc64_v3_get_pate(cpu, lpid, &pate)) {
> - return -1;
> - }
> - if (!validate_pate(cpu, lpid, &pate)) {
> - return -1;
> - }
> - /* We don't support guest mode yet */
> - if (lpid != 0) {
> - error_report("PowerNV guest support Unimplemented");
> - exit(1);
> - }
> - }
> -
> - /* Index Process Table by PID to Find Corresponding Process Table Entry
> */
> - offset = pid * sizeof(struct prtb_entry);
> - size = 1ULL << ((pate.dw1 & PATE1_R_PRTS) + 12);
> - if (offset >= size) {
> - /* offset exceeds size of the process table */
> - return -1;
> - }
> - prtbe0 = ldq_phys(cs->as, (pate.dw1 & PATE1_R_PRTB) + offset);
> -
> - /* Walk Radix Tree from Process Table Entry to Convert EA to RA */
> - page_size = PRTBE_R_GET_RTS(prtbe0);
> - pte = ppc_radix64_walk_tree(cpu, eaddr & R_EADDR_MASK,
> - prtbe0 & PRTBE_R_RPDB, prtbe0 & PRTBE_R_RPDS,
> - &raddr, &page_size, &fault_cause, &pte_addr);
> - if (!pte) {
> + if (ppc_radix64_xlate(cpu, eaddr, 0, lpid, pid, msr_dr, &raddr, &psize,
> + &prot, 0)) {
> return -1;
> }
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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