Messages in this thread | | | Subject | Re: [PATCH] x86/entry/32: Fix setup of CS high bits | From | Jan Kiszka <> | Date | Mon, 15 Oct 2018 15:18:12 +0200 |
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On 15.10.18 15:14, David Laight wrote: > From: Jan Kiszka >> Sent: 15 October 2018 14:09 > ... >>> Those fields are genuinely 16 bit. So the comment should say >>> something like "Those high bits are used for CS_FROM_ENTRY_STACK and >>> CS_FROM_USER_CR3". >> >> /* >> * The high bits of the CS dword (__csh) are used for >> * CS_FROM_ENTRY_STACK and CS_FROM_USER_CR3. Clear them in case >> * hardware didn't do this for us. >> */ > > What's a 'dword' ? :-) > > On a 32bit processor a 'word' will be 32 bits to a 'double-word' > would be 64 bits. > One of the worst names to use.
That's ia32 nomenclature: a doubleword (dword) is a 32-bit value.
Jan
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