From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: linux-s390@vger.kernel.org, imbrenda@linux.ibm.com,
david@redhat.com, thuth@redhat.com, seiden@linux.ibm.com
Subject: [kvm-unit-tests PATCH v2 01/10] lib: s390x: sie: Add sca allocation and freeing
Date: Tue, 7 Dec 2021 15:59:56 +0000 [thread overview]
Message-ID: <20211207160005.1586-2-frankja@linux.ibm.com> (raw)
In-Reply-To: <20211207160005.1586-1-frankja@linux.ibm.com>
For protected guests we always need a ESCA so let's add functions to
create and destroy SCAs on demand. We don't have scheduling and I
don't expect multiple VCPU SIE in the next few months so SCA content
handling is not added.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
---
lib/s390x/sie.c | 12 ++++++++++++
lib/s390x/sie.h | 2 ++
2 files changed, 14 insertions(+)
diff --git a/lib/s390x/sie.c b/lib/s390x/sie.c
index b965b314..51d3b94e 100644
--- a/lib/s390x/sie.c
+++ b/lib/s390x/sie.c
@@ -55,6 +55,16 @@ void sie(struct vm *vm)
vm->save_area.guest.grs[15] = vm->sblk->gg15;
}
+void sie_guest_sca_create(struct vm *vm)
+{
+ vm->sca = (struct esca_block *)alloc_page();
+
+ /* Let's start out with one page of ESCA for now */
+ vm->sblk->scaoh = ((uint64_t)vm->sca >> 32);
+ vm->sblk->scaol = (uint64_t)vm->sca & ~0x3fU;
+ vm->sblk->ecb2 |= ECB2_ESCA;
+}
+
/* Initializes the struct vm members like the SIE control block. */
void sie_guest_create(struct vm *vm, uint64_t guest_mem, uint64_t guest_mem_len)
{
@@ -80,4 +90,6 @@ void sie_guest_destroy(struct vm *vm)
{
free_page(vm->crycb);
free_page(vm->sblk);
+ if (vm->sblk->ecb2 & ECB2_ESCA)
+ free_page(vm->sca);
}
diff --git a/lib/s390x/sie.h b/lib/s390x/sie.h
index 7ef7251b..f34e3c80 100644
--- a/lib/s390x/sie.h
+++ b/lib/s390x/sie.h
@@ -191,6 +191,7 @@ struct vm_save_area {
struct vm {
struct kvm_s390_sie_block *sblk;
struct vm_save_area save_area;
+ void *sca; /* System Control Area */
uint8_t *crycb; /* Crypto Control Block */
/* Ptr to first guest page */
uint8_t *guest_mem;
@@ -203,6 +204,7 @@ void sie(struct vm *vm);
void sie_expect_validity(void);
void sie_check_validity(uint16_t vir_exp);
void sie_handle_validity(struct vm *vm);
+void sie_guest_sca_create(struct vm *vm);
void sie_guest_create(struct vm *vm, uint64_t guest_mem, uint64_t guest_mem_len);
void sie_guest_destroy(struct vm *vm);
--
2.32.0
next prev parent reply other threads:[~2021-12-07 16:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 15:59 [kvm-unit-tests PATCH v2 00/10] s390x: sie: Add PV snippet support Janosch Frank
2021-12-07 15:59 ` Janosch Frank [this message]
2021-12-07 15:59 ` [kvm-unit-tests PATCH v2 02/10] s390x: sie: Add PV fields to SIE control block Janosch Frank
2021-12-07 15:59 ` [kvm-unit-tests PATCH v2 03/10] s390x: sie: Add UV information into VM struct Janosch Frank
2021-12-07 15:59 ` [kvm-unit-tests PATCH v2 04/10] s390x: uv: Add more UV call functions Janosch Frank
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 05/10] s390x: lib: Extend UV library with PV guest management Janosch Frank
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 06/10] lib: s390: sie: Add PV guest register handling Janosch Frank
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 07/10] s390x: snippets: Add PV support Janosch Frank
2021-12-08 12:57 ` Claudio Imbrenda
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 08/10] lib: s390x: Introduce snippet helpers Janosch Frank
2021-12-08 11:46 ` Claudio Imbrenda
2021-12-08 13:56 ` Janosch Frank
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 09/10] s390x: mvpg-sie: Use " Janosch Frank
2021-12-08 11:19 ` Claudio Imbrenda
2021-12-07 16:00 ` [kvm-unit-tests PATCH v2 10/10] s390x: sie: Add PV diag test Janosch Frank
2021-12-08 12:55 ` Claudio Imbrenda
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211207160005.1586-2-frankja@linux.ibm.com \
--to=frankja@linux.ibm.com \
--cc=david@redhat.com \
--cc=imbrenda@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=seiden@linux.ibm.com \
--cc=thuth@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).