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[PATCH] linux-user/elfload: Fix /proc/cpuinfo features: on s390x
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From: |
Ilya Leoshkevich |
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Subject: |
[PATCH] linux-user/elfload: Fix /proc/cpuinfo features: on s390x |
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Date: |
Tue, 27 Jun 2023 17:13:33 +0200 |
elf_hwcap_str() takes a bit number, but compares it for equality with
the HWCAP_S390_* masks. This causes /proc/cpuinfo to display incorrect
hwcaps.
Fix by introducing the HWCAP_S390_NR_* constants and using them in
elf_hwcap_str() instead of the HWCAP_S390_*. While at it, add the
missing nnpa, pcimio and sie hwcaps from the latest kernel.
Output before:
features : esan3 zarch stfle msa
Output after:
features : esan3 zarch stfle msa ldisp eimm etf3eh highgprs vx
vxe
Fixes: e19807bee357 ("linux-user/elfload: Introduce elf_hwcap_str() on s390x")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
---
include/elf.h | 66 +++++++++++++++++++++++++++++++-------------
linux-user/elfload.c | 41 ++++++++++++++-------------
2 files changed, 69 insertions(+), 38 deletions(-)
diff --git a/include/elf.h b/include/elf.h
index 2f4d0e56d16..ec9755e73ba 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -596,25 +596,53 @@ typedef struct {
/* Bits present in AT_HWCAP for s390. */
-#define HWCAP_S390_ESAN3 1
-#define HWCAP_S390_ZARCH 2
-#define HWCAP_S390_STFLE 4
-#define HWCAP_S390_MSA 8
-#define HWCAP_S390_LDISP 16
-#define HWCAP_S390_EIMM 32
-#define HWCAP_S390_DFP 64
-#define HWCAP_S390_HPAGE 128
-#define HWCAP_S390_ETF3EH 256
-#define HWCAP_S390_HIGH_GPRS 512
-#define HWCAP_S390_TE 1024
-#define HWCAP_S390_VXRS 2048
-#define HWCAP_S390_VXRS_BCD 4096
-#define HWCAP_S390_VXRS_EXT 8192
-#define HWCAP_S390_GS 16384
-#define HWCAP_S390_VXRS_EXT2 32768
-#define HWCAP_S390_VXRS_PDE 65536
-#define HWCAP_S390_SORT 131072
-#define HWCAP_S390_DFLT 262144
+#define HWCAP_S390_NR_ESAN3 0
+#define HWCAP_S390_NR_ZARCH 1
+#define HWCAP_S390_NR_STFLE 2
+#define HWCAP_S390_NR_MSA 3
+#define HWCAP_S390_NR_LDISP 4
+#define HWCAP_S390_NR_EIMM 5
+#define HWCAP_S390_NR_DFP 6
+#define HWCAP_S390_NR_HPAGE 7
+#define HWCAP_S390_NR_ETF3EH 8
+#define HWCAP_S390_NR_HIGH_GPRS 9
+#define HWCAP_S390_NR_TE 10
+#define HWCAP_S390_NR_VXRS 11
+#define HWCAP_S390_NR_VXRS_BCD 12
+#define HWCAP_S390_NR_VXRS_EXT 13
+#define HWCAP_S390_NR_GS 14
+#define HWCAP_S390_NR_VXRS_EXT2 15
+#define HWCAP_S390_NR_VXRS_PDE 16
+#define HWCAP_S390_NR_SORT 17
+#define HWCAP_S390_NR_DFLT 18
+#define HWCAP_S390_NR_VXRS_PDE2 19
+#define HWCAP_S390_NR_NNPA 20
+#define HWCAP_S390_NR_PCI_MIO 21
+#define HWCAP_S390_NR_SIE 22
+
+#define HWCAP_S390_ESAN3 (1 << HWCAP_S390_NR_ESAN3)
+#define HWCAP_S390_ZARCH (1 << HWCAP_S390_NR_ZARCH)
+#define HWCAP_S390_STFLE (1 << HWCAP_S390_NR_STFLE)
+#define HWCAP_S390_MSA (1 << HWCAP_S390_NR_MSA)
+#define HWCAP_S390_LDISP (1 << HWCAP_S390_NR_LDISP)
+#define HWCAP_S390_EIMM (1 << HWCAP_S390_NR_EIMM)
+#define HWCAP_S390_DFP (1 << HWCAP_S390_NR_DFP)
+#define HWCAP_S390_HPAGE (1 << HWCAP_S390_NR_HPAGE)
+#define HWCAP_S390_ETF3EH (1 << HWCAP_S390_NR_ETF3EH)
+#define HWCAP_S390_HIGH_GPRS (1 << HWCAP_S390_NR_HIGH_GPRS)
+#define HWCAP_S390_TE (1 << HWCAP_S390_NR_TE)
+#define HWCAP_S390_VXRS (1 << HWCAP_S390_NR_VXRS)
+#define HWCAP_S390_VXRS_BCD (1 << HWCAP_S390_NR_VXRS_BCD)
+#define HWCAP_S390_VXRS_EXT (1 << HWCAP_S390_NR_VXRS_EXT)
+#define HWCAP_S390_GS (1 << HWCAP_S390_NR_GS)
+#define HWCAP_S390_VXRS_EXT2 (1 << HWCAP_S390_NR_VXRS_EXT2)
+#define HWCAP_S390_VXRS_PDE (1 << HWCAP_S390_NR_VXRS_PDE)
+#define HWCAP_S390_SORT (1 << HWCAP_S390_NR_SORT)
+#define HWCAP_S390_DFLT (1 << HWCAP_S390_NR_DFLT)
+#define HWCAP_S390_VXRS_PDE2 (1 << HWCAP_S390_NR_VXRS_PDE2)
+#define HWCAP_S390_NNPA (1 << HWCAP_S390_NR_NNPA)
+#define HWCAP_S390_PCI_MIO (1 << HWCAP_S390_NR_PCI_MIO)
+#define HWCAP_S390_SIE (1 << HWCAP_S390_NR_SIE)
/* M68K specific definitions. */
/* We use the top 24 bits to encode information about the
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 9a2ec568b09..d1807b9e4e3 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1608,25 +1608,28 @@ uint32_t get_elf_hwcap(void)
const char *elf_hwcap_str(uint32_t bit)
{
static const char *hwcap_str[] = {
- [HWCAP_S390_ESAN3] = "esan3",
- [HWCAP_S390_ZARCH] = "zarch",
- [HWCAP_S390_STFLE] = "stfle",
- [HWCAP_S390_MSA] = "msa",
- [HWCAP_S390_LDISP] = "ldisp",
- [HWCAP_S390_EIMM] = "eimm",
- [HWCAP_S390_DFP] = "dfp",
- [HWCAP_S390_HPAGE] = "edat",
- [HWCAP_S390_ETF3EH] = "etf3eh",
- [HWCAP_S390_HIGH_GPRS] = "highgprs",
- [HWCAP_S390_TE] = "te",
- [HWCAP_S390_VXRS] = "vx",
- [HWCAP_S390_VXRS_BCD] = "vxd",
- [HWCAP_S390_VXRS_EXT] = "vxe",
- [HWCAP_S390_GS] = "gs",
- [HWCAP_S390_VXRS_EXT2] = "vxe2",
- [HWCAP_S390_VXRS_PDE] = "vxp",
- [HWCAP_S390_SORT] = "sort",
- [HWCAP_S390_DFLT] = "dflt",
+ [HWCAP_S390_NR_ESAN3] = "esan3",
+ [HWCAP_S390_NR_ZARCH] = "zarch",
+ [HWCAP_S390_NR_STFLE] = "stfle",
+ [HWCAP_S390_NR_MSA] = "msa",
+ [HWCAP_S390_NR_LDISP] = "ldisp",
+ [HWCAP_S390_NR_EIMM] = "eimm",
+ [HWCAP_S390_NR_DFP] = "dfp",
+ [HWCAP_S390_NR_HPAGE] = "edat",
+ [HWCAP_S390_NR_ETF3EH] = "etf3eh",
+ [HWCAP_S390_NR_HIGH_GPRS] = "highgprs",
+ [HWCAP_S390_NR_TE] = "te",
+ [HWCAP_S390_NR_VXRS] = "vx",
+ [HWCAP_S390_NR_VXRS_BCD] = "vxd",
+ [HWCAP_S390_NR_VXRS_EXT] = "vxe",
+ [HWCAP_S390_NR_GS] = "gs",
+ [HWCAP_S390_NR_VXRS_EXT2] = "vxe2",
+ [HWCAP_S390_NR_VXRS_PDE] = "vxp",
+ [HWCAP_S390_NR_SORT] = "sort",
+ [HWCAP_S390_NR_DFLT] = "dflt",
+ [HWCAP_S390_NR_NNPA] = "nnpa",
+ [HWCAP_S390_NR_PCI_MIO] = "pcimio",
+ [HWCAP_S390_NR_SIE] = "sie",
};
return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
--
2.41.0
- [PATCH] linux-user/elfload: Fix /proc/cpuinfo features: on s390x,
Ilya Leoshkevich <=