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[PATCH v4 2/4] target/ppc: Extend ppc_radix64_check_prot() with a 'parti
From: |
Cédric Le Goater |
Subject: |
[PATCH v4 2/4] target/ppc: Extend ppc_radix64_check_prot() with a 'partition_scoped' bool |
Date: |
Fri, 3 Apr 2020 16:00:54 +0200 |
This prepares ground for partition-scoped Radix translation.
Signed-off-by: Suraj Jitindar Singh <address@hidden>
Signed-off-by: Cédric Le Goater <address@hidden>
Reviewed-by: Greg Kurz <address@hidden>
---
target/ppc/mmu-radix64.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/target/ppc/mmu-radix64.c b/target/ppc/mmu-radix64.c
index 4b0d0ff50a3c..11b3c6d48c65 100644
--- a/target/ppc/mmu-radix64.c
+++ b/target/ppc/mmu-radix64.c
@@ -105,7 +105,8 @@ static void ppc_radix64_raise_si(PowerPCCPU *cpu, int rwx,
vaddr eaddr,
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 };
@@ -121,11 +122,11 @@ 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
*/
}
@@ -250,7 +251,7 @@ static int ppc_radix64_process_scoped_xlate(PowerPCCPU
*cpu, int rwx,
g_raddr, g_page_size, &fault_cause, &pte_addr);
if (!(pte & R_PTE_VALID) ||
- ppc_radix64_check_prot(cpu, rwx, pte, &fault_cause, g_prot)) {
+ ppc_radix64_check_prot(cpu, rwx, pte, &fault_cause, g_prot, false)) {
/* No valid pte or access denied due to protection */
if (cause_excp) {
ppc_radix64_raise_si(cpu, rwx, eaddr, fault_cause);
--
2.25.1