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| author | Marc Zyngier <marc.zyngier@arm.com> | 2012-12-07 18:40:43 +0000 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-06-07 14:03:32 +0100 |
| commit | 2240bbb697354f5617d95e3ee104ca61bb812507 (patch) | |
| tree | 40381f354ba18bdac75de83ce11e4417d525136b /arch/arm64 | |
| parent | 363116073a26dbc2903d8417047597eebcc05273 (diff) | |
| download | linux-2240bbb697354f5617d95e3ee104ca61bb812507.tar.gz linux-2240bbb697354f5617d95e3ee104ca61bb812507.tar.xz | |
arm64: KVM: HYP mode idmap support
Add the necessary infrastructure for identity-mapped HYP page
tables. Idmap-ed code must be in the ".hyp.idmap.text" linker
section.
The rest of the HYP ends up in ".hyp.text".
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/vmlinux.lds.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/arm64/kernel/vmlinux.lds.S b/arch/arm64/kernel/vmlinux.lds.S index 3fae2be8b016..b0c51b7d6293 100644 --- a/arch/arm64/kernel/vmlinux.lds.S +++ b/arch/arm64/kernel/vmlinux.lds.S @@ -17,6 +17,19 @@ ENTRY(stext) jiffies = jiffies_64; +#define HYPERVISOR_TEXT \ + /* \ + * Force the alignment to be compatible with \ + * the vectors requirements \ + */ \ + . = ALIGN(2048); \ + VMLINUX_SYMBOL(__hyp_idmap_text_start) = .; \ + *(.hyp.idmap.text) \ + VMLINUX_SYMBOL(__hyp_idmap_text_end) = .; \ + VMLINUX_SYMBOL(__hyp_text_start) = .; \ + *(.hyp.text) \ + VMLINUX_SYMBOL(__hyp_text_end) = .; + SECTIONS { /* @@ -49,6 +62,7 @@ SECTIONS TEXT_TEXT SCHED_TEXT LOCK_TEXT + HYPERVISOR_TEXT *(.fixup) *(.gnu.warning) . = ALIGN(16); @@ -124,3 +138,9 @@ SECTIONS STABS_DEBUG .comment 0 : { *(.comment) } } + +/* + * The HYP init code can't be more than a page long. + */ +ASSERT(((__hyp_idmap_text_start + PAGE_SIZE) > __hyp_idmap_text_end), + "HYP init code too big") |