1 files changed, 0 insertions, 121 deletions
diff --git a/arch/s390/kvm/gmap.c b/arch/s390/kvm/gmap.c
deleted file mode 100644
index 6d8944d1b4a0..000000000000
--- a/arch/s390/kvm/gmap.c
+++ /dev/null
@@ -1,121 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Guest memory management for KVM/s390
- *
- * Copyright IBM Corp. 2008, 2020, 2024
- *
- *    Author(s): Claudio Imbrenda <imbrenda@linux.ibm.com>
- *               Martin Schwidefsky <schwidefsky@de.ibm.com>
- *               David Hildenbrand <david@redhat.com>
- *               Janosch Frank <frankja@linux.vnet.ibm.com>
- */
-
-#include <linux/compiler.h>
-#include <linux/kvm.h>
-#include <linux/kvm_host.h>
-#include <linux/pgtable.h>
-#include <linux/pagemap.h>
-
-#include <asm/lowcore.h>
-#include <asm/gmap.h>
-#include <asm/uv.h>
-
-#include "gmap.h"
-
-/**
- * gmap_make_secure() - make one guest page secure
- * @gmap: the guest gmap
- * @gaddr: the guest address that needs to be made secure
- * @uvcb: the UVCB specifying which operation needs to be performed
- *
- * Context: needs to be called with kvm->srcu held.
- * Return: 0 on success, < 0 in case of error.
- */
-int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb)
-{
-	struct kvm *kvm = gmap->private;
-	unsigned long vmaddr;
-
-	lockdep_assert_held(&kvm->srcu);
-
-	vmaddr = gfn_to_hva(kvm, gpa_to_gfn(gaddr));
-	if (kvm_is_error_hva(vmaddr))
-		return -EFAULT;
-	return make_hva_secure(gmap->mm, vmaddr, uvcb);
-}
-
-int gmap_convert_to_secure(struct gmap *gmap, unsigned long gaddr)
-{
-	struct uv_cb_cts uvcb = {
-		.header.cmd = UVC_CMD_CONV_TO_SEC_STOR,
-		.header.len = sizeof(uvcb),
-		.guest_handle = gmap->guest_handle,
-		.gaddr = gaddr,
-	};
-
-	return gmap_make_secure(gmap, gaddr, &uvcb);
-}
-
-/**
- * __gmap_destroy_page() - Destroy a guest page.
- * @gmap: the gmap of the guest
- * @page: the page to destroy
- *
- * An attempt will be made to destroy the given guest page. If the attempt
- * fails, an attempt is made to export the page. If both attempts fail, an
- * appropriate error is returned.
- *
- * Context: must be called holding the mm lock for gmap->mm
- */
-static int __gmap_destroy_page(struct gmap *gmap, struct page *page)
-{
-	struct folio *folio = page_folio(page);
-	int rc;
-
-	/*
-	 * See gmap_make_secure(): large folios cannot be secure. Small
-	 * folio implies FW_LEVEL_PTE.
-	 */
-	if (folio_test_large(folio))
-		return -EFAULT;
-
-	rc = uv_destroy_folio(folio);
-	/*
-	 * Fault handlers can race; it is possible that two CPUs will fault
-	 * on the same secure page. One CPU can destroy the page, reboot,
-	 * re-enter secure mode and import it, while the second CPU was
-	 * stuck at the beginning of the handler. At some point the second
-	 * CPU will be able to progress, and it will not be able to destroy
-	 * the page. In that case we do not want to terminate the process,
-	 * we instead try to export the page.
-	 */
-	if (rc)
-		rc = uv_convert_from_secure_folio(folio);
-
-	return rc;
-}
-
-/**
- * gmap_destroy_page() - Destroy a guest page.
- * @gmap: the gmap of the guest
- * @gaddr: the guest address to destroy
- *
- * An attempt will be made to destroy the given guest page. If the attempt
- * fails, an attempt is made to export the page. If both attempts fail, an
- * appropriate error is returned.
- *
- * Context: may sleep.
- */
-int gmap_destroy_page(struct gmap *gmap, unsigned long gaddr)
-{
-	struct page *page;
-	int rc = 0;
-
-	mmap_read_lock(gmap->mm);
-	page = gfn_to_page(gmap->private, gpa_to_gfn(gaddr));
-	if (page)
-		rc = __gmap_destroy_page(gmap, page);
-	kvm_release_page_clean(page);
-	mmap_read_unlock(gmap->mm);
-	return rc;
-}