From: Muli Ben-Yehuda <muli-7z/5BgaJwgfQT0dZR+AlfA@public.gmane.org>
To: Amit Shah <amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 4/8] KVM: PVDMA: Introduce is_pv_device() dma operation
Date: Mon, 12 Nov 2007 12:52:01 +0200 [thread overview]
Message-ID: <20071112105201.GG3299@rhun.haifa.ibm.com> (raw)
In-Reply-To: <218cf425feff1d4daf23d3f25df1eb224108a1a3.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
On Wed, Nov 07, 2007 at 04:21:05PM +0200, Amit Shah wrote:
> A guest can call dma_ops->is_pv_device() to find out if a device is
> a passthrough'ed device (device passed on to a guest by the
> host). If this is true, a hypercall will be made to translate DMA
> mapping operations.
Doesn't really belong in the DMA mapping API. Instead what I think we
should do is to cache this (per device) value in the pci_device struct
(or device struct?) and in the dma-ops implementation inspect it to
decide exactly how to do DMA mapping for this device.
Cheers,
Muli
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next prev parent reply other threads:[~2007-11-12 10:52 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-07 14:21 RFC: Paravirtualized DMA accesses for KVM Amit Shah
[not found] ` <d1c72ce6e3a0e73c18993c3f066d1350b147f726.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 1/8] KVM: PVDMA Host: Handle reqeusts for guest DMA mappings Amit Shah
[not found] ` <6d486436cf50e269d8914229d10ff60f3d646795.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 2/8] KVM: Move #include asm/kvm_para.h outside of __KERNEL__ Amit Shah
[not found] ` <609d5d611a5fb58ab5a7184be7b6d29494023ba0.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 3/8] KVM: PVDMA Guest: Guest-side routines for paravirtualized DMA Amit Shah
[not found] ` <218cf425feff1d4daf23d3f25df1eb224108a1a3.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 4/8] KVM: PVDMA: Introduce is_pv_device() dma operation Amit Shah
[not found] ` <e2f5f0c08d08cf66a39c8b452410078617e611f7.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 5/8] KVM: PVDMA: Update dma_alloc_coherent to make it paravirt-aware Amit Shah
[not found] ` <6bbd61409e4779febab1eaf03796455b22e8ea70.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 6/8] KVM: PVDMA Guest: Add Makefile rule Amit Shah
[not found] ` <01dd7657bda537d738ea92330606592fa8aaf3c5.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 7/8] PVDMA: Guest: Add Kconfig options to select PVDMA Amit Shah
[not found] ` <fbc5dea9bfdb021ab2d3808583314901799405a0.1194445109.git.amit.shah@qumranet.com>
2007-11-07 14:21 ` [PATCH 8/8] KVM: Update drivers/Makefile to check for CONFIG_VIRTUALIZATION Amit Shah
[not found] ` <1194445269752-git-send-email-amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
[not found] ` <d1c72ce6e3a0e73c18993c3f066d1350b147f726.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 1/8] KVM: PVDMA Host: Handle reqeusts for guest DMA mappings Amit Shah
[not found] ` <6d486436cf50e269d8914229d10ff60f3d646795.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 2/8] KVM: Move #include asm/kvm_para.h outside of __KERNEL__ Amit Shah
[not found] ` <e2f5f0c08d08cf66a39c8b452410078617e611f7.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 5/8] KVM: PVDMA: Update dma_alloc_coherent to make it paravirt-aware Amit Shah
2007-11-12 10:56 ` Muli Ben-Yehuda
[not found] ` <20071112105637.GH3299-WD1JZD8MxeCTrf4lBMg6DdBPR1lH4CV8@public.gmane.org>
2007-11-12 11:59 ` Amit Shah
[not found] ` <6bbd61409e4779febab1eaf03796455b22e8ea70.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 6/8] KVM: PVDMA Guest: Add Makefile rule Amit Shah
[not found] ` <01dd7657bda537d738ea92330606592fa8aaf3c5.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 7/8] PVDMA: Guest: Add Kconfig options to select PVDMA Amit Shah
[not found] ` <fbc5dea9bfdb021ab2d3808583314901799405a0.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 8/8] KVM: Update drivers/Makefile to check for CONFIG_VIRTUALIZATION Amit Shah
[not found] ` <609d5d611a5fb58ab5a7184be7b6d29494023ba0.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 3/8] KVM: PVDMA Guest: Guest-side routines for paravirtualized DMA Amit Shah
2007-11-12 10:50 ` Muli Ben-Yehuda
[not found] ` <20071112105001.GF3299-WD1JZD8MxeCTrf4lBMg6DdBPR1lH4CV8@public.gmane.org>
2007-11-12 11:56 ` Amit Shah
[not found] ` <200711121726.24907.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-12 13:32 ` Muli Ben-Yehuda
[not found] ` <20071112133207.GJ3299-WD1JZD8MxeCTrf4lBMg6DdBPR1lH4CV8@public.gmane.org>
2007-11-12 13:55 ` Amit Shah
[not found] ` <200711121925.27844.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-12 14:01 ` Muli Ben-Yehuda
2007-11-12 14:53 ` Gerd Hoffmann
2007-11-12 16:00 ` Joerg Roedel
[not found] ` <218cf425feff1d4daf23d3f25df1eb224108a1a3.1194445109.git.amit.shah-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-11-07 14:21 ` [PATCH 4/8] KVM: PVDMA: Introduce is_pv_device() dma operation Amit Shah
2007-11-12 10:52 ` Muli Ben-Yehuda [this message]
2007-11-12 15:55 ` [PATCH 1/8] KVM: PVDMA Host: Handle reqeusts for guest DMA mappings Joerg Roedel
[not found] ` <20071112155522.GF6466-5C7GfCeVMHo@public.gmane.org>
2007-11-12 17:07 ` Amit Shah
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