kernel.git/arch/sparc/lib, branch linux-4.11.y

Adding the type of exported symbols

2017-07-21T05:00:09Z

[ Upstream commit f5a651f1d5e524cab345250a783702fb6a3f14d6 ] Missing symbol type for few functions prevents genksyms from generating symbol versions for those functions. This patch fixes them. Signed-off-by: Nagarathnam Muthusamy Reviewed-by: Babu Moger Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

sed regex in Makefile.build requires line break between exported symbols

2017-07-21T05:00:09Z

[ Upstream commit d16c0649feb4fe4e814f44803df5a617769c3233 ] The following regex in Makefile.build matches only one ___EXPORT_SYMBOL per line. sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ATOMIC_OPS macro in atomic_64.S expands multiple symbols in same line hence version generation is done only for the last matched symbol. This patch adds new line between the symbol expansions. Signed-off-by: Nagarathnam Muthusamy Reviewed-by: Babu Moger Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

sparc64: Add __multi3 for gcc 7.x and later.

2017-06-14T13:07:35Z

[ Upstream commit 1b4af13ff2cc6897557bb0b8d9e2fad4fa4d67aa ] Reported-by: Waldemar Brodkorb Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

sparc64: fix fault handling in NGbzero.S and GENbzero.S

2017-05-14T12:06:01Z

commit 3c7f62212018b904ae17f5636ead18a4dca3a88f upstream. When any of the functions contained in NGbzero.S and GENbzero.S vector through *bzero_from_clear_user, we may end up taking a fault when executing one of the store alternate address space instructions. If this happens, the exception handler does not restore the %asi register. This commit fixes the issue by introducing a new exception handler that ensures the %asi register is restored when a fault is handled. Orabug: 25577560 Signed-off-by: Dave Aldridge Reviewed-by: Rob Gardner Reviewed-by: Babu Moger Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

arch/sparc: Avoid DCTI Couples

2017-03-28T04:51:40Z

Avoid un-intended DCTI Couples. Use of DCTI couples is deprecated. Also address the "Programming Note" for optimal performance. Here is the complete text from Oracle SPARC Architecture Specs. 6.3.4.7 DCTI Couples "A delayed control transfer instruction (DCTI) in the delay slot of another DCTI is referred to as a “DCTI couple”. The use of DCTI couples is deprecated in the Oracle SPARC Architecture; no new software should place a DCTI in the delay slot of another DCTI, because on future Oracle SPARC Architecture implementations DCTI couples may execute either slowly or differently than the programmer assumes it will. SPARC V8 and SPARC V9 Compatibility Note The SPARC V8 architecture left behavior undefined for a DCTI couple. The SPARC V9 architecture defined behavior in that case, but as of UltraSPARC Architecture 2005, use of DCTI couples was deprecated. Software should not expect high performance from DCTI couples, and performance of DCTI couples should be expected to decline further in future processors. Programming Note As noted in TABLE 6-5 on page 115, an annulled branch-always (branch-always with a = 1) instruction is not architecturally a DCTI. However, since not all implementations make that distinction, for optimal performance, a DCTI should not be placed in the instruction word immediately following an annulled branch-always instruction (BA,A or BPA,A)." Signed-off-by: Babu Moger Reviewed-by: Rob Gardner Signed-off-by: David S. Miller

sparc64: Delete now unused user copy fixup functions.

2016-10-25T04:26:04Z

Now that all of the user copy routines are converted to return accurate residual lengths when an exception occurs, we no longer need the broken fixup routines. Signed-off-by: David S. Miller

sparc64: Convert U3copy_{from,to}_user to accurate exception reporting.

2016-10-25T04:20:35Z

Report the exact number of bytes which have not been successfully copied when an exception occurs, using the running remaining length. Signed-off-by: David S. Miller

sparc64: Convert NG2copy_{from,to}_user to accurate exception reporting.

2016-10-25T03:46:44Z

Report the exact number of bytes which have not been successfully copied when an exception occurs, using the running remaining length. Signed-off-by: David S. Miller

sparc64: Convert NGcopy_{from,to}_user to accurate exception reporting.

2016-10-25T02:32:12Z

Report the exact number of bytes which have not been successfully copied when an exception occurs, using the running remaining length. Signed-off-by: David S. Miller

sparc64: Convert NG4copy_{from,to}_user to accurate exception reporting.

2016-10-25T01:58:05Z

Report the exact number of bytes which have not been successfully copied when an exception occurs, using the running remaining length. Signed-off-by: David S. Miller