Displaying 2 results from an estimated 2 matches for "fixedmap".
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2005 Aug 31
0
[PATCH] Re: SMP dom0 with 8 cpus of i386
...time of boot the PCI mmconfig space is accessed thousands
times, one after another; that causes fixed map & unmap continuously
very fast for a long time. Currently the fix-mapped virtual address for
Shared_info_page for dom0 & the PCI mmconfig page are adjacent in the
fixed_addresses in the fixedmap.h.
#ifdef CONFIG_PCI_MMCONFIG
FIX_PCIE_MCFG,
#endif
FIX_SHARED_INFO,
FIX_GNTTAB_BEGIN,
I am suspecting that this is causing a race condition because of
writable page tables. While accessing the PCI mmconfig on i386 the dom0
kernel (cpu 0) is continuously rewriting into the pte for...
2005 Sep 01
0
RE: [PATCH] Re: SMP dom0 with 8 cpus of i386
...space is accessed
> thousands times, one after another; that causes fixed map &
> unmap continuously very fast for a long time. Currently the
> fix-mapped virtual address for Shared_info_page for dom0 &
> the PCI mmconfig page are adjacent in the fixed_addresses in
> the fixedmap.h.
>
> #ifdef CONFIG_PCI_MMCONFIG
> FIX_PCIE_MCFG,
> #endif
> FIX_SHARED_INFO,
> FIX_GNTTAB_BEGIN,
>
> I am suspecting that this is causing a race condition
> because of writable page tables. While accessing the PCI
> mmconfig on i386 the dom0 kernel...