search for: xen_extra_mem_start

...way, the patch itself: diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 9c38bd1..f831568 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -229,7 +229,7 @@ char * __init xen_memory_setup(void) memcpy(map_raw, map, sizeof(map)); e820.nr_map = 0; - xen_extra_mem_start = mem_end; + xen_extra_mem_start = mem_end < (1UL<<32) ? (1UL<<32) : mem_end; for (i = 0; i < memmap.nr_entries; i++) { unsigned long long end; "(1UL<<32)" will overflow on a 32 bit kernel. Oh hang on... that''s the differenc...

...this list is inside the domain structure with name "hugepage_list". When the domain is booting, at that time the memory seen by the kernel is allocated memory  less the amount required for hugepages. The function reserve_hugepage_range is called as a initcall. Before this function the xen_extra_mem_start points to this apparent end of the memory. In this function we reserve the PFN range for the hugepages which are going to be allocated by kernel by incrementing the xen_extra_mem_start. We maintain these PFNs as pages in "xen_hugepfn_list" in the kernel. Now before the kernel reques...

...aniel Kiper <dkiper@net-space.pl> --- arch/x86/xen/setup.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 90bac0a..d3663df 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -50,7 +50,7 @@ phys_addr_t xen_extra_mem_start, xen_extra_mem_size; */ #define EXTRA_MEM_RATIO (10) -static __init void xen_add_extra_mem(unsigned long pages) +static void __init xen_add_extra_mem(unsigned long pages) { unsigned long pfn; @@ -336,7 +336,7 @@ static void __init fiddle_vdso(void) #endif } -static __cpuinit int regi...