From: Janosch Frank <frankja@linux.ibm.com>
To: kvm@vger.kernel.org
Cc: linux-s390@vger.kernel.org, thuth@redhat.com, david@redhat.com,
imbrenda@linux.ibm.com
Subject: [kvm-unit-tests PATCH 4/6] s390x: Test for share/unshare call support before using them
Date: Tue, 16 Mar 2021 09:16:52 +0000 [thread overview]
Message-ID: <20210316091654.1646-5-frankja@linux.ibm.com> (raw)
In-Reply-To: <20210316091654.1646-1-frankja@linux.ibm.com>
Testing for facility only means the UV Call facility is available.
The UV will only indicate the share/unshare calls for a protected
guest 2, so let's also check that.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
lib/s390x/malloc_io.c | 5 +++--
s390x/uv-guest.c | 6 ++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/lib/s390x/malloc_io.c b/lib/s390x/malloc_io.c
index 1dcf1691..78582eac 100644
--- a/lib/s390x/malloc_io.c
+++ b/lib/s390x/malloc_io.c
@@ -19,6 +19,7 @@
#include <alloc_page.h>
#include <asm/facility.h>
#include <bitops.h>
+#include <uv.h>
static int share_pages(void *p, int count)
{
@@ -47,7 +48,7 @@ void *alloc_io_mem(int size, int flags)
assert(size);
p = alloc_pages_flags(order, AREA_DMA31 | flags);
- if (!p || !test_facility(158))
+ if (!p || !uv_os_is_guest())
return p;
n = share_pages(p, 1 << order);
@@ -65,7 +66,7 @@ void free_io_mem(void *p, int size)
assert(IS_ALIGNED((uintptr_t)p, PAGE_SIZE));
- if (test_facility(158))
+ if (uv_os_is_guest())
unshare_pages(p, 1 << order);
free_pages(p);
}
diff --git a/s390x/uv-guest.c b/s390x/uv-guest.c
index 95a968c5..8915b2f1 100644
--- a/s390x/uv-guest.c
+++ b/s390x/uv-guest.c
@@ -16,6 +16,7 @@
#include <asm/facility.h>
#include <asm/uv.h>
#include <sclp.h>
+#include <uv.h>
static unsigned long page;
@@ -141,6 +142,11 @@ int main(void)
goto done;
}
+ if (!uv_os_is_guest()) {
+ report_skip("Not a protected guest");
+ goto done;
+ }
+
page = (unsigned long)alloc_page();
test_priv();
test_invalid();
--
2.27.0
next prev parent reply other threads:[~2021-03-16 9:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 9:16 [kvm-unit-tests PATCH 0/6] s390x: uv: Extend guest test and add host test Janosch Frank
2021-03-16 9:16 ` [kvm-unit-tests PATCH 1/6] s390x: uv-guest: Add invalid share location test Janosch Frank
2021-04-19 11:24 ` Thomas Huth
2021-04-19 11:45 ` Janosch Frank
2021-04-20 8:48 ` Thomas Huth
2021-04-20 13:40 ` Claudio Imbrenda
2021-04-21 11:04 ` Cornelia Huck
2021-03-16 9:16 ` [kvm-unit-tests PATCH 2/6] s390x: Add more Ultravisor command structure definitions Janosch Frank
2021-04-20 14:09 ` Claudio Imbrenda
2021-04-21 11:13 ` Cornelia Huck
2021-04-26 14:33 ` Janosch Frank
2021-03-16 9:16 ` [kvm-unit-tests PATCH 3/6] s390x: uv: Add UV lib Janosch Frank
2021-04-20 14:15 ` Claudio Imbrenda
2021-04-26 14:20 ` Janosch Frank
2021-03-16 9:16 ` Janosch Frank [this message]
2021-04-20 14:18 ` [kvm-unit-tests PATCH 4/6] s390x: Test for share/unshare call support before using them Claudio Imbrenda
2021-03-16 9:16 ` [kvm-unit-tests PATCH 5/6] s390x: uv-guest: Test invalid commands Janosch Frank
2021-04-20 14:26 ` Claudio Imbrenda
2021-04-26 13:40 ` Janosch Frank
2021-03-16 9:16 ` [kvm-unit-tests PATCH 6/6] s390x: Add UV host test Janosch Frank
2021-04-20 15:47 ` Claudio Imbrenda
2021-04-26 14:31 ` Janosch Frank
2021-04-19 7:24 ` [kvm-unit-tests PATCH 0/6] s390x: uv: Extend guest test and add " Janosch Frank
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