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Ovmf/Xen: fix pointer to int cast in XenBusDxe 

On ARM, xen_pfn_t is 64 bits but the size of a pointer is only
32 bits, so casting between them needs to go via (UINTN). Also
move the xen_pfn_t cast outside the shift so that we can avoid
shifting 64-bit quantities on 32-bit architectures, which may
require runtime library support.

Contributed-under: TianoCore Contribution Agreement 1.0
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16968 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2015-02-28 20:32:16 +00:00 committed by lersek
parent 0ac10d1d8e
commit d6970b9b41
1 changed files with 2 additions and 2 deletions
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4
OvmfPkg/XenBusDxe/GrantTable.c
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@ -160,7 +160,7 @@ XenGrantTableInit (
Parameters.domid = DOMID_SELF;
Parameters.idx = Index;
Parameters.space = XENMAPSPACE_grant_table;
Parameters.gpfn = (((xen_pfn_t) GrantTable) >> EFI_PAGE_SHIFT) + Index;
Parameters.gpfn = (xen_pfn_t) ((UINTN) GrantTable >> EFI_PAGE_SHIFT) + Index;
ReturnCode = XenHypercallMemoryOp (Dev, XENMEM_add_to_physmap, &Parameters);
if (ReturnCode != 0) {
DEBUG ((EFI_D_ERROR, "Xen GrantTable, add_to_physmap hypercall error: %d\n", ReturnCode));
@ -182,7 +182,7 @@ XenGrantTableDeinit (
for (Index = NR_GRANT_FRAMES - 1; Index >= 0; Index--) {
Parameters.domid = DOMID_SELF;
Parameters.gpfn = (((xen_pfn_t) GrantTable) >> EFI_PAGE_SHIFT) + Index;
Parameters.gpfn = (xen_pfn_t) ((UINTN) GrantTable >> EFI_PAGE_SHIFT) + Index;
DEBUG ((EFI_D_INFO, "Xen GrantTable, removing %X\n", Parameters.gpfn));
ReturnCode = XenHypercallMemoryOp (Dev, XENMEM_remove_from_physmap, &Parameters);
if (ReturnCode != 0) {