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| author | H. Peter Anvin <hpa@zytor.com> | 2009-12-01 06:33:51 +0100 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-12-01 06:33:51 +0100 |
| commit | ccef086454d4c97e7b722e9303390207d681cb4c (patch) | |
| tree | 2dce23edf190368aab9afa7af6b4abec99930089 /arch/x86/kernel | |
| parent | x86/pat: Trivial: don't create debugfs for memtype if pat is disabled (diff) | |
| download | linux-ccef086454d4c97e7b722e9303390207d681cb4c.tar.xz linux-ccef086454d4c97e7b722e9303390207d681cb4c.zip | |
x86, mm: Correct the implementation of is_untracked_pat_range()
The semantics the PAT code expect of is_untracked_pat_range() is "is
this range completely contained inside the untracked region." This
means that checkin 8a27138924f64d2f30c1022f909f74480046bc3f was
technically wrong, because the implementation needlessly confusing.
The sane interface is for it to take a semiclosed range like just
about everything else (as evidenced by the sheer number of "- 1"'s
removed by that patch) so change the actual implementation to match.
Reported-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jack Steiner <steiner@sgi.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <20091119202341.GA4420@sgi.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 597a47b1cec6..1e09417c992f 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -39,7 +39,7 @@ static u64 gru_start_paddr, gru_end_paddr; static inline bool is_GRU_range(u64 start, u64 end) { - return start >= gru_start_paddr && end < gru_end_paddr; + return start >= gru_start_paddr && end <= gru_end_paddr; } static bool uv_is_untracked_pat_range(u64 start, u64 end) |