From: Laurent Vivier <laurent@vivier.eu>
To: qemu-devel@nongnu.org
Cc: qemu-trivial@nongnu.org,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Michael Tokarev" <mjt@tls.msk.ru>,
"Laurent Vivier" <laurent@vivier.eu>,
"Klaus Jensen" <k.jensen@samsung.com>
Subject: [PULL 03/14] hw/block/nvme: Simplify timestamp sum
Date: Tue, 13 Oct 2020 13:50:41 +0200 [thread overview]
Message-ID: <20201013115052.133355-4-laurent@vivier.eu> (raw)
In-Reply-To: <20201013115052.133355-1-laurent@vivier.eu>
From: Philippe Mathieu-Daudé <philmd@redhat.com>
As the 'timestamp' variable is declared as a 48-bit bitfield,
we do not need to wrap the sum result.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Message-Id: <20201002075716.1657849-1-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
hw/block/nvme.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 63078f600920..44fa5b90769b 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1280,12 +1280,7 @@ static inline uint64_t nvme_get_timestamp(const NvmeCtrl *n)
union nvme_timestamp ts;
ts.all = 0;
-
- /*
- * If the sum of the Timestamp value set by the host and the elapsed
- * time exceeds 2^48, the value returned should be reduced modulo 2^48.
- */
- ts.timestamp = (n->host_timestamp + elapsed_time) & 0xffffffffffff;
+ ts.timestamp = n->host_timestamp + elapsed_time;
/* If the host timestamp is non-zero, set the timestamp origin */
ts.origin = n->host_timestamp ? 0x01 : 0x00;
--
2.26.2
next prev parent reply other threads:[~2020-10-13 11:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-13 11:50 [PULL 00/14] Trivial branch for 5.2 patches Laurent Vivier
2020-10-13 11:50 ` [PULL 01/14] qemu-img-cmds.hx: Update comment that mentions Texinfo Laurent Vivier
2020-10-13 11:50 ` [PULL 02/14] target/i386/cpu: " Laurent Vivier
2020-10-13 11:50 ` Laurent Vivier [this message]
2020-10-13 11:50 ` [PULL 04/14] tests/test-char: Use a proper fallthrough comment Laurent Vivier
2020-10-13 11:50 ` [PULL 05/14] vmdk: fix maybe uninitialized warnings Laurent Vivier
2020-10-13 11:50 ` [PULL 06/14] hw/acpi/piix4: Rename piix4_pm_add_propeties() to piix4_pm_add_properties() Laurent Vivier
2020-10-13 11:50 ` [PULL 07/14] softmmu/memory: Log invalid memory accesses Laurent Vivier
2020-10-13 11:50 ` [PULL 08/14] hw/pci: Fix typo in PCI hot-plug error message Laurent Vivier
2020-10-13 11:50 ` [PULL 09/14] block/blkdebug: fix memory leak Laurent Vivier
2020-10-13 11:50 ` [PULL 10/14] hw/char/serial: remove duplicate .class_init in serial_mm_info Laurent Vivier
2020-10-13 11:50 ` [PULL 11/14] goldfish_rtc: change MemoryRegionOps endianness to DEVICE_NATIVE_ENDIAN Laurent Vivier
2020-10-13 11:50 ` [PULL 12/14] target/sparc/int32_helper: Remove duplicated 'Tag Overflow' entry Laurent Vivier
2020-10-13 11:50 ` [PULL 13/14] mingw: fix error __USE_MINGW_ANSI_STDIO redefined Laurent Vivier
2020-10-13 11:50 ` [PULL 14/14] meson.build: drop duplicate 'sparc64' entry Laurent Vivier
2020-10-13 13:53 ` [PULL 00/14] Trivial branch for 5.2 patches Peter Maydell
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