From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: Janosch Frank <frankja@linux.ibm.com>
Cc: kvm@vger.kernel.org, thuth@redhat.com, david@redhat.com,
linux-s390@vger.kernel.org, seiden@linux.ibm.com
Subject: Re: [kvm-unit-tests PATCH 2/9] s390x: pfmf: Fix 1MB handling
Date: Wed, 22 Sep 2021 11:16:41 +0200 [thread overview]
Message-ID: <20210922111641.23a957ac@p-imbrenda> (raw)
In-Reply-To: <20210922071811.1913-3-frankja@linux.ibm.com>
On Wed, 22 Sep 2021 07:18:04 +0000
Janosch Frank <frankja@linux.ibm.com> wrote:
> On everything larger than 4k pfmf will update the address in GR2 when
> it's interrupted so we should loop on pfmf and not trust that it
> doesn't get interrupted.
>
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> ---
> s390x/pfmf.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/s390x/pfmf.c b/s390x/pfmf.c
> index 2f3cb110..b0095bd7 100644
> --- a/s390x/pfmf.c
> +++ b/s390x/pfmf.c
> @@ -54,6 +54,7 @@ static void test_1m_key(void)
> bool rp = true;
> union pfmf_r1 r1;
> union skey skey;
> + void *addr = pagebuf;
>
> report_prefix_push("1M");
> if (test_facility(169)) {
> @@ -64,7 +65,9 @@ static void test_1m_key(void)
> r1.reg.sk = 1;
> r1.reg.fsc = PFMF_FSC_1M;
> r1.reg.key = 0x30;
> - pfmf(r1.val, pagebuf);
> + do {
> + addr = pfmf(r1.val, addr);
> + } while ((uintptr_t)addr != (uintptr_t)pagebuf + HPAGE_SIZE);
> for (i = 0; i < 256; i++) {
> skey.val = get_storage_key(pagebuf + i * PAGE_SIZE);
> skey.val &= SKEY_ACC | SKEY_FP;
> @@ -99,6 +102,7 @@ static void test_1m_clear(void)
> int i;
> union pfmf_r1 r1;
> unsigned long sum = 0;
> + void *addr = pagebuf;
>
> r1.val = 0;
> r1.reg.cf = 1;
> @@ -106,7 +110,9 @@ static void test_1m_clear(void)
>
> report_prefix_push("1M");
> memset(pagebuf, 42, PAGE_SIZE * 256);
> - pfmf(r1.val, pagebuf);
> + do {
> + addr = pfmf(r1.val, addr);
> + } while ((uintptr_t)addr != (uintptr_t)pagebuf + HPAGE_SIZE);
> for (i = 0; i < PAGE_SIZE * 256; i++)
> sum |= pagebuf[i];
> report(!sum, "clear memory");
next prev parent reply other threads:[~2021-09-22 9:35 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 7:18 [kvm-unit-tests PATCH 0/9] s390x: Cleanup and maintenance 2 Janosch Frank
2021-09-22 7:18 ` [kvm-unit-tests PATCH 1/9] s390x: uv: Tolerate 0x100 query return code Janosch Frank
2021-09-22 9:12 ` Claudio Imbrenda
2021-09-22 11:36 ` Janosch Frank
2021-09-27 15:19 ` Thomas Huth
2021-09-22 7:18 ` [kvm-unit-tests PATCH 2/9] s390x: pfmf: Fix 1MB handling Janosch Frank
2021-09-22 9:16 ` Claudio Imbrenda [this message]
2021-09-27 15:23 ` Thomas Huth
2021-09-28 9:50 ` Janosch Frank
2021-09-22 7:18 ` [kvm-unit-tests PATCH 3/9] s390x: uv-host: Fence a destroy cpu test on z15 Janosch Frank
2021-09-22 9:18 ` Claudio Imbrenda
2021-09-27 15:26 ` Thomas Huth
2021-09-28 11:21 ` Janosch Frank
2021-09-28 16:28 ` Thomas Huth
2021-09-22 7:18 ` [kvm-unit-tests PATCH 4/9] lib: s390x: uv: Fix share return value and print Janosch Frank
2021-09-22 9:19 ` Claudio Imbrenda
2021-09-27 17:38 ` Thomas Huth
2021-09-22 7:18 ` [kvm-unit-tests PATCH 5/9] lib: s390x: uv: Add UVC_ERR_DEBUG switch Janosch Frank
2021-09-22 9:23 ` Claudio Imbrenda
2021-09-22 11:37 ` Janosch Frank
2021-09-27 17:41 ` Thomas Huth
2021-09-28 10:00 ` Janosch Frank
2021-09-22 7:18 ` [kvm-unit-tests PATCH 6/9] lib: s390x: Print PGM code as hex Janosch Frank
2021-09-22 9:24 ` Claudio Imbrenda
2021-09-27 17:43 ` Thomas Huth
2021-09-22 7:18 ` [kvm-unit-tests PATCH 7/9] s390x: Makefile: Remove snippet flatlib linking Janosch Frank
2021-09-27 17:47 ` Thomas Huth
2021-09-28 9:57 ` Janosch Frank
2021-09-22 7:18 ` [kvm-unit-tests PATCH 8/9] s390x: Add sthyi cc==0 r2+1 verification Janosch Frank
2021-09-22 9:31 ` Claudio Imbrenda
2021-09-22 7:18 ` [kvm-unit-tests PATCH 9/9] s390x: skrf: Fix tprot assembly Janosch Frank
2021-09-22 9:34 ` Claudio Imbrenda
2021-09-22 11:47 ` Janosch Frank
[not found] ` <20210922134112.174842-1-scgl@linux.ibm.com>
2021-09-22 13:53 ` Janosch Frank
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