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| author | Tony Lindgren <tony@atomide.com> | 2014-03-02 23:22:03 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2014-03-02 23:22:03 +0100 |
| commit | f777ba1780584b100ab9664cc06d04f3bb273a84 (patch) | |
| tree | 865813eb0078530ca3b036c0c3eee6ce33f9315f /arch/x86/xen/p2m.c | |
| parent | ARM: dts: am43xx: add support for parallel NAND flash (diff) | |
| parent | ARM: dts: omap4+: Add DMM bindings (diff) | |
| download | linux-f777ba1780584b100ab9664cc06d04f3bb273a84.tar.xz linux-f777ba1780584b100ab9664cc06d04f3bb273a84.zip | |
Merge tag 'for_3.15/dts_signed' of git://git.kernel.org/pub/scm/linux/kernel/git/bcousson/linux-omap-dt into omap-for-v3.15/dt
Add craneboard devices
Add more N900 devices
Add am43x-epos-evm and am437x-gp-evm devices
Add OMAP4 DMM devices
Conflicts:
arch/arm/boot/dts/am43x-epos-evm.dts
arch/arm/boot/dts/dra7.dtsi
Diffstat (limited to 'arch/x86/xen/p2m.c')
| -rw-r--r-- | arch/x86/xen/p2m.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 8009acbe41e4..696c694986d0 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -899,6 +899,13 @@ int m2p_add_override(unsigned long mfn, struct page *page, "m2p_add_override: pfn %lx not mapped", pfn)) return -EINVAL; } + WARN_ON(PagePrivate(page)); + SetPagePrivate(page); + set_page_private(page, mfn); + page->index = pfn_to_mfn(pfn); + + if (unlikely(!set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)))) + return -ENOMEM; if (kmap_op != NULL) { if (!PageHighMem(page)) { @@ -937,16 +944,19 @@ int m2p_add_override(unsigned long mfn, struct page *page, } EXPORT_SYMBOL_GPL(m2p_add_override); int m2p_remove_override(struct page *page, - struct gnttab_map_grant_ref *kmap_op, - unsigned long mfn) + struct gnttab_map_grant_ref *kmap_op) { unsigned long flags; + unsigned long mfn; unsigned long pfn; unsigned long uninitialized_var(address); unsigned level; pte_t *ptep = NULL; pfn = page_to_pfn(page); + mfn = get_phys_to_machine(pfn); + if (mfn == INVALID_P2M_ENTRY || !(mfn & FOREIGN_FRAME_BIT)) + return -EINVAL; if (!PageHighMem(page)) { address = (unsigned long)__va(pfn << PAGE_SHIFT); @@ -960,7 +970,10 @@ int m2p_remove_override(struct page *page, spin_lock_irqsave(&m2p_override_lock, flags); list_del(&page->lru); spin_unlock_irqrestore(&m2p_override_lock, flags); + WARN_ON(!PagePrivate(page)); + ClearPagePrivate(page); + set_phys_to_machine(pfn, page->index); if (kmap_op != NULL) { if (!PageHighMem(page)) { struct multicall_space mcs; |