From: Jan Beulich <jbeulich@suse.com>
To: "Marek Marczykowski-Górecki" <marmarek@invisiblethingslab.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
George Dunlap <george.dunlap@citrix.com>,
Julien Grall <julien@xen.org>,
Stefano Stabellini <sstabellini@kernel.org>, Wei Liu <wl@xen.org>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH v6 10/10] drivers/char: use smp barriers in xhci driver
Date: Tue, 6 Sep 2022 11:23:38 +0200 [thread overview]
Message-ID: <ed4ab251-2961-e2f8-3e65-edc1cc7bbfaa@suse.com> (raw)
In-Reply-To: <992c6512e54435a006c6de28515d1242518cb974.1662124370.git-series.marmarek@invisiblethingslab.com>
On 02.09.2022 15:17, Marek Marczykowski-Górecki wrote:
> All (interesting) data is in plain WB cached memory, and the few BAR
> register that are configured have a UC mapping, which orders properly
> WRT other writes on x86.
>
> Suggested-by: Andrew Cooper <andrew.cooper3@citrix.com>
> Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
As said in reply to Andrew's comment: What about non-x86? Drivers like
this one, even if presently depending on X86 in Kconfig, shouldn't be
making assumptions like this. Such is imo only appropriate when a
driver conceivably would only ever be useful on x86.
Jan
next prev parent reply other threads:[~2022-09-06 21:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 13:17 [PATCH v6 00/10] Add Xue - console over USB 3 Debug Capability Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 01/10] drivers/char: allow using both dbgp=xhci and dbgp=ehci Marek Marczykowski-Górecki
2022-09-06 15:07 ` Jan Beulich
2022-09-06 15:46 ` Marek Marczykowski-Górecki
2022-09-06 15:54 ` Jan Beulich
2022-09-02 13:17 ` [PATCH v6 02/10] console: support multiple serial console simultaneously Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 03/10] IOMMU: add common API for device reserved memory Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 04/10] IOMMU/VT-d: wire common device reserved memory API Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 05/10] IOMMU/AMD: " Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 06/10] drivers/char: mark DMA buffers as reserved for the XHCI Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 07/10] drivers/char: add RX support to the XHCI driver Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 08/10] drivers/char: allow driving the rest of XHCI by a domain while Xen uses DbC Marek Marczykowski-Górecki
2022-09-02 13:17 ` [PATCH v6 09/10] drivers/char: fix handling cable re-plug in XHCI console driver Marek Marczykowski-Górecki
2022-09-06 9:21 ` Jan Beulich
2022-09-02 13:17 ` [PATCH v6 10/10] drivers/char: use smp barriers in xhci driver Marek Marczykowski-Górecki
2022-09-06 9:23 ` Jan Beulich [this message]
2022-09-06 15:11 ` [PATCH v6 00/10] Add Xue - console over USB 3 Debug Capability Jan Beulich
2022-09-06 16:05 ` Marek Marczykowski-Górecki
2022-09-06 16:12 ` Jan Beulich
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