Tech Support > Microsoft Windows > Drivers > Kernel 64 bit and UMD 32 bit
Kernel 64 bit and UMD 32 bit
Posted by David Webber on April 22nd, 2008


Is is possible to have Kernel mode driver 64bit that will load 32bit UMD, under XP 64 and Vista 64?

~David

Posted by Doron Holan [MSFT] on April 22nd, 2008


does UMD = user mode driver? KM drivers do not load user mode drivers. a 64 bit driver can support both 32 and 64 bit client applications. as long as you are not using pointer sized fields in your structs, it makes no difference between the bitness of the appl.

d

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"David Webber" <DavidWebber10@gmail.com> wrote in message news:4984F601-4C9A-4E7A-939D-9DA4004C6F27@microsoft.com...
Is is possible to have Kernel mode driver 64bit that will load 32bit UMD, under XP 64 and Vista 64?

~David


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