I am working on a research project that is based around Xen and I am running into memory constraints with the default 10 MB heap size. I have tried increasing directmap_mbytes in asm/config.h as well as increasing the size of the Xen virtual address space and changing the segment descriptors. However, this results in an unknown interrupt message on boot after the message "Using APIC driver default". There must be something else that I need to change to get this to work. I''m assuming that the unknown interrupt is caused by either a page fault exception or a segment violation. Any ideas? Jesse _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
I am working on a research project that is based around Xen and I am running into memory constraints with the default 10 MB heap size. I have tried increasing directmap_mbytes in asm/config.h as well as increasing the size of the Xen virtual address space and changing the segment descriptors. However, this results in an unknown interrupt message on boot after the message "Using APIC driver default". There must be something else that I need to change to get this to work. I''m assuming that the unknown interrupt is caused by either a page fault exception or a segment violation. Any ideas? Jesse _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
On 16/8/06 11:08 pm, "Jesse Gross" <jegross@stanford.edu> wrote:> I am working on a research project that is based around Xen and I am > running into memory constraints with the default 10 MB heap size. I > have tried increasing directmap_mbytes in asm/config.h as well as > increasing the size of the Xen virtual address space and changing the > segment descriptors. However, this results in an unknown interrupt > message on boot after the message "Using APIC driver default". > > There must be something else that I need to change to get this to work. > I''m assuming that the unknown interrupt is caused by either a page fault > exception or a segment violation. > > Any ideas?Use x86/64? :-) On i386 the heap size is constrained by available virtual address space. So it can''t easily be increased. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
>> I am working on a research project that is based around Xen and I am >> running into memory constraints with the default 10 MB heap size. I >> have tried increasing directmap_mbytes in asm/config.h as well as >> increasing the size of the Xen virtual address space and changing the >> segment descriptors. However, this results in an unknown interrupt >> message on boot after the message "Using APIC driver default". >> >> There must be something else that I need to change to get this to work. >> I''m assuming that the unknown interrupt is caused by either a page fault >> exception or a segment violation. >> >> Any ideas? >> > > Use x86/64? :-) On i386 the heap size is constrained by available virtual > address space. So it can''t easily be increased. >I noticed that it isn''t easy to do... Are there any games that I can play that might let me squeeze some more address space out of x86? I thought that maybe I could something with PAE, since Xen uses a greater portion of the address space on that, but I haven''t had any luck so far. Jesse _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel