From: Anthony PERARD <anthony.per...@citrix.com> Unfortunately, Xen isn't ready to deal with mapping at the top of the physical address space, so we relocate the mapping after the LAPIC location.
See this thread about the issue with the mapping: - https://lore.kernel.org/xen-devel/f8c4151a-6dac-d87c-ef46-eb35ada07...@suse.com/ The PhysicalAddressIdentityMapping() call isn't going to do anything anymore since everything under 4GB is already mapped, but there is no need to remove the call. CC: Jan Beulich <jbeul...@suse.com> CC: Andrew Cooper <andrew.coop...@citrix.com> Signed-off-by: Anthony PERARD <anthony.per...@citrix.com> --- OvmfPkg/XenPlatformPei/Xen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/OvmfPkg/XenPlatformPei/Xen.c b/OvmfPkg/XenPlatformPei/Xen.c index a4e82b356936..9c6641895970 100644 --- a/OvmfPkg/XenPlatformPei/Xen.c +++ b/OvmfPkg/XenPlatformPei/Xen.c @@ -569,7 +569,7 @@ CalibrateLapicTimer ( EFI_STATUS Status; - SharedInfo = (VOID*)((1ULL << mPhysMemAddressWidth) - EFI_PAGE_SIZE); + SharedInfo = (VOID*)((UINTN)PcdGet32 (PcdCpuLocalApicBaseAddress) + SIZE_1MB); Status = PhysicalAddressIdentityMapping ((EFI_PHYSICAL_ADDRESS)SharedInfo); if (EFI_ERROR (Status)) { DEBUG ((DEBUG_ERROR, -- Anthony PERARD -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#77183): https://edk2.groups.io/g/devel/message/77183 Mute This Topic: https://groups.io/mt/83844392/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
