98d3290ab8
23726-x86-intel-flexmigration.patch 23706-fix-20892.patch 23723-x86-CMOS-lock.patch 23676-x86_64-image-map-bounds.patch 23724-x86-smpboot-x2apic.patch - hotplug.losetup.patch correct dev:inode detection, stat returns major:minor without leading zeros, while losetup -a includes trailing zeros - fate#310635: xen npiv multipath support update block-npiv* scripts for testing OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=133
60 lines
2.3 KiB
Diff
60 lines
2.3 KiB
Diff
# HG changeset patch
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# User Jan Beulich <jbeulich@novell.com>
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# Date 1310631973 -3600
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# Node ID 80c9db90bba96e443a22d268c06948fdef9c6a75
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# Parent 88823213a4780ebced6d7adcb1ffd2dda6a339ca
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x86-64: properly handle alias mappings beyond _end
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Changeset 19632:b0966b6f5180 wasn't really complete: The Xen image
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mapping doesn't end at _end, but a full 16Mb gets mapped during boot
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(and never got unmapped so far), hence all of this space was subject
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to alias mappings when it comes to cache attribute changes. Unmap all
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full large pages between _end and the 16Mb boundary, and include all
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other pages beyond _end when checking for aliases.
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Signed-off-by: Jan Beulich <jbeulich@novell.com>
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--- a/xen/arch/x86/mm.c
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+++ b/xen/arch/x86/mm.c
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@@ -776,7 +776,7 @@ static int update_xen_mappings(unsigned
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int err = 0;
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#ifdef __x86_64__
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bool_t alias = mfn >= PFN_DOWN(xen_phys_start) &&
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- mfn < PFN_UP(xen_phys_start + (unsigned long)_end - XEN_VIRT_START);
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+ mfn < PFN_UP(xen_phys_start + xen_virt_end - XEN_VIRT_START);
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unsigned long xen_va =
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XEN_VIRT_START + ((mfn - PFN_DOWN(xen_phys_start)) << PAGE_SHIFT);
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--- a/xen/arch/x86/setup.c
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+++ b/xen/arch/x86/setup.c
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@@ -99,6 +99,8 @@ unsigned long __read_mostly xen_phys_sta
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/* Limits of Xen heap, used to initialise the allocator. */
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unsigned long __initdata xenheap_initial_phys_start;
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unsigned long __read_mostly xenheap_phys_end;
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+#else
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+unsigned long __read_mostly xen_virt_end;
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#endif
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DEFINE_PER_CPU(struct tss_struct, init_tss);
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@@ -1098,6 +1100,9 @@ void __init __start_xen(unsigned long mb
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map_pages_to_xen((unsigned long)__va(kexec_crash_area.start),
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kexec_crash_area.start >> PAGE_SHIFT,
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PFN_UP(kexec_crash_area.size), PAGE_HYPERVISOR);
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+ xen_virt_end = ((unsigned long)_end + (1UL << L2_PAGETABLE_SHIFT) - 1) &
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+ ~((1UL << L2_PAGETABLE_SHIFT) - 1);
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+ destroy_xen_mappings(xen_virt_end, XEN_VIRT_START + BOOTSTRAP_MAP_BASE);
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#endif
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memguard_init();
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--- a/xen/include/asm-x86/x86_64/page.h
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+++ b/xen/include/asm-x86/x86_64/page.h
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@@ -34,6 +34,8 @@
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#include <xen/config.h>
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#include <asm/types.h>
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+extern unsigned long xen_virt_end;
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+
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extern unsigned long max_pdx;
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extern unsigned long pfn_pdx_bottom_mask, ma_va_bottom_mask;
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extern unsigned int pfn_pdx_hole_shift;
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