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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] [PULL 0/3] 128-bit support for the memory API |
Date: | Tue, 01 Nov 2011 13:08:23 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.21) Gecko/20110831 Lightning/1.0b2 Thunderbird/3.1.13 |
On 10/30/2011 09:02 AM, Avi Kivity wrote:
This somewhat controversial patchset converts internal arithmetic in the memory API to 128 bits. It has been argued that with careful coding we can make 64-bit work as well. I don't think this is true in general - a memory router can adjust addresses either forwards or backwards, and some buses (PCIe) need the full 64-bit space - though it's probably the case for all the configurations we support today. Regardless, the need for careful coding means subtle bugs, which I don't want in a core API that is driven by guest supplied values. Avi Kivity (3): Add support for 128-bit arithmetic memory: use 128-bit integers for sizes and intermediates Adjust system and pci address spaces to full 64-bit
I now notice that this is not a PULL request... Did you mess up the subject or the pull request?
Regards, Anthony Liguori
exec.c | 2 +- hw/pc_piix.c | 2 +- hw/pci_bridge.c | 2 +- int128.h | 116 ++++++++++++++++++++++++++++++++ memory.c | 196 ++++++++++++++++++++++++++++++++---------------------- memory.h | 3 +- 6 files changed, 237 insertions(+), 84 deletions(-) create mode 100644 int128.h
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