From: Matthew Rosato <mjrosato@linux.ibm.com>
To: Gerd Bayer <gbayer@linux.ibm.com>,
Niklas Schnelle <schnelle@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Benjamin Block <bblock@linux.ibm.com>,
Ramesh Errabolu <ramesh@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
"Joerg Roedel (AMD)" <joro@8bytes.org>,
Farhan Ali <alifm@linux.ibm.com>, Cam Miller <cam@linux.ibm.com>,
Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
iommu@lists.linux.dev
Subject: Re: [PATCH v2 2/3] s390/pci: Use 32-bit fh outside of inline asm
Date: Mon, 12 Oct 2026 11:00:35 -0400 [thread overview]
Message-ID: <26614f2f-f268-4080-b63e-d9731a361568@linux.ibm.com> (raw)
In-Reply-To: <20261012-rpcit_trcfh_upstream-v2-2-1812db73dfa5@linux.ibm.com>
On 10/12/26 10:21 AM, Gerd Bayer wrote:
> zpci_refresh_trans() declared the PCI function handle as a u64 type just
> because the actual RPCIT machine instruction required that in a 64bit
> register, while the function handle is architected as a 32bit type and
> defined as such in the zpci_dev struct.
>
> Push the extension from u32 to u64 down in the call chain to just before
> calling the RPCIT wrapper function. Since the struct of the typical
> req's matches the format expected by RPCIT, too, create one of those to
> pass along.
>
> Signed-off-by: Gerd Bayer <gbayer@linux.ibm.com>
> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
next prev parent reply other threads:[~2026-10-12 15:00 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 14:21 [PATCH v2 0/3] s390/pci: Updates to PCI insn tracing Gerd Bayer
2026-10-12 14:21 ` [PATCH v2 1/3] s390/pci: Adjust alignment in insn trace Gerd Bayer
2026-10-12 15:28 ` Matthew Rosato
2026-10-12 14:21 ` [PATCH v2 2/3] s390/pci: Use 32-bit fh outside of inline asm Gerd Bayer
2026-10-12 15:00 ` Matthew Rosato [this message]
2026-10-12 14:21 ` [PATCH v2 3/3] s390/pci: Add function handle to RPCIT insn trace Gerd Bayer
2026-10-12 15:00 ` Matthew Rosato
2026-10-12 16:00 ` [PATCH v2 0/3] s390/pci: Updates to PCI insn tracing Heiko Carstens
2026-10-12 16:10 ` Gerd Bayer
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