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Diffstat (limited to 'arch/powerpc/kvm/book3s_pr_papr.c')
-rw-r--r--arch/powerpc/kvm/book3s_pr_papr.c101
1 files changed, 97 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/book3s_pr_papr.c b/arch/powerpc/kvm/book3s_pr_papr.c
index b9589324797b..3ff9013d6e79 100644
--- a/arch/powerpc/kvm/book3s_pr_papr.c
+++ b/arch/powerpc/kvm/book3s_pr_papr.c
@@ -15,6 +15,8 @@
* published by the Free Software Foundation.
*/
+#include <linux/anon_inodes.h>
+
#include <asm/uaccess.h>
#include <asm/kvm_ppc.h>
#include <asm/kvm_book3s.h>
@@ -98,6 +100,83 @@ static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu)
return EMULATE_DONE;
}
+/* Request defs for kvmppc_h_pr_bulk_remove() */
+#define H_BULK_REMOVE_TYPE 0xc000000000000000ULL
+#define H_BULK_REMOVE_REQUEST 0x4000000000000000ULL
+#define H_BULK_REMOVE_RESPONSE 0x8000000000000000ULL
+#define H_BULK_REMOVE_END 0xc000000000000000ULL
+#define H_BULK_REMOVE_CODE 0x3000000000000000ULL
+#define H_BULK_REMOVE_SUCCESS 0x0000000000000000ULL
+#define H_BULK_REMOVE_NOT_FOUND 0x1000000000000000ULL
+#define H_BULK_REMOVE_PARM 0x2000000000000000ULL
+#define H_BULK_REMOVE_HW 0x3000000000000000ULL
+#define H_BULK_REMOVE_RC 0x0c00000000000000ULL
+#define H_BULK_REMOVE_FLAGS 0x0300000000000000ULL
+#define H_BULK_REMOVE_ABSOLUTE 0x0000000000000000ULL
+#define H_BULK_REMOVE_ANDCOND 0x0100000000000000ULL
+#define H_BULK_REMOVE_AVPN 0x0200000000000000ULL
+#define H_BULK_REMOVE_PTEX 0x00ffffffffffffffULL
+#define H_BULK_REMOVE_MAX_BATCH 4
+
+static int kvmppc_h_pr_bulk_remove(struct kvm_vcpu *vcpu)
+{
+ int i;
+ int paramnr = 4;
+ int ret = H_SUCCESS;
+
+ for (i = 0; i < H_BULK_REMOVE_MAX_BATCH; i++) {
+ unsigned long tsh = kvmppc_get_gpr(vcpu, paramnr+(2*i));
+ unsigned long tsl = kvmppc_get_gpr(vcpu, paramnr+(2*i)+1);
+ unsigned long pteg, rb, flags;
+ unsigned long pte[2];
+ unsigned long v = 0;
+
+ if ((tsh & H_BULK_REMOVE_TYPE) == H_BULK_REMOVE_END) {
+ break; /* Exit success */
+ } else if ((tsh & H_BULK_REMOVE_TYPE) !=
+ H_BULK_REMOVE_REQUEST) {
+ ret = H_PARAMETER;
+ break; /* Exit fail */
+ }
+
+ tsh &= H_BULK_REMOVE_PTEX | H_BULK_REMOVE_FLAGS;
+ tsh |= H_BULK_REMOVE_RESPONSE;
+
+ if ((tsh & H_BULK_REMOVE_ANDCOND) &&
+ (tsh & H_BULK_REMOVE_AVPN)) {
+ tsh |= H_BULK_REMOVE_PARM;
+ kvmppc_set_gpr(vcpu, paramnr+(2*i), tsh);
+ ret = H_PARAMETER;
+ break; /* Exit fail */
+ }
+
+ pteg = get_pteg_addr(vcpu, tsh & H_BULK_REMOVE_PTEX);
+ copy_from_user(pte, (void __user *)pteg, sizeof(pte));
+
+ /* tsl = AVPN */
+ flags = (tsh & H_BULK_REMOVE_FLAGS) >> 26;
+
+ if ((pte[0] & HPTE_V_VALID) == 0 ||
+ ((flags & H_AVPN) && (pte[0] & ~0x7fUL) != tsl) ||
+ ((flags & H_ANDCOND) && (pte[0] & tsl) != 0)) {
+ tsh |= H_BULK_REMOVE_NOT_FOUND;
+ } else {
+ /* Splat the pteg in (userland) hpt */
+ copy_to_user((void __user *)pteg, &v, sizeof(v));
+
+ rb = compute_tlbie_rb(pte[0], pte[1],
+ tsh & H_BULK_REMOVE_PTEX);
+ vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false);
+ tsh |= H_BULK_REMOVE_SUCCESS;
+ tsh |= (pte[1] & (HPTE_R_C | HPTE_R_R)) << 43;
+ }
+ kvmppc_set_gpr(vcpu, paramnr+(2*i), tsh);
+ }
+ kvmppc_set_gpr(vcpu, 3, ret);
+
+ return EMULATE_DONE;
+}
+
static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu)
{
unsigned long flags = kvmppc_get_gpr(vcpu, 4);
@@ -134,6 +213,20 @@ static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu)
return EMULATE_DONE;
}
+static int kvmppc_h_pr_put_tce(struct kvm_vcpu *vcpu)
+{
+ unsigned long liobn = kvmppc_get_gpr(vcpu, 4);
+ unsigned long ioba = kvmppc_get_gpr(vcpu, 5);
+ unsigned long tce = kvmppc_get_gpr(vcpu, 6);
+ long rc;
+
+ rc = kvmppc_h_put_tce(vcpu, liobn, ioba, tce);
+ if (rc == H_TOO_HARD)
+ return EMULATE_FAIL;
+ kvmppc_set_gpr(vcpu, 3, rc);
+ return EMULATE_DONE;
+}
+
int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd)
{
switch (cmd) {
@@ -144,12 +237,12 @@ int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd)
case H_PROTECT:
return kvmppc_h_pr_protect(vcpu);
case H_BULK_REMOVE:
- /* We just flush all PTEs, so user space can
- handle the HPT modifications */
- kvmppc_mmu_pte_flush(vcpu, 0, 0);
- break;
+ return kvmppc_h_pr_bulk_remove(vcpu);
+ case H_PUT_TCE:
+ return kvmppc_h_pr_put_tce(vcpu);
case H_CEDE:
kvm_vcpu_block(vcpu);
+ clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
vcpu->stat.halt_wakeup++;
return EMULATE_DONE;
}